case_images: PMC5286491_01
case_images: An illustration of the kettlebell swing exercise.
case_images: CRIOR2017-4269575.001.jpg
case_images: PMC5286491_01_CRIOR2017-4269575.001.jpg
case_images: fig1
case_images: Kettlebell exercise was performed by forcefully swinging the kettlebell back between the legs by flexing the hips and keeping the knees slightly flexed (~10-15 ) and to quickly reverse the direction with an explosive extension of the hips, swinging the kettlebell out to chest level where the hips and knees are extended and the subject is standing upright (Figure 1).