The Association of Genetic Markers Involved in Muscle Performance Responding to Lactate Levels during Physical Exercise Therapy by Nordic Walking in Patients with Long COVID Syndrome: A Nonrandomized Controlled Pilot Study
Authors/Creators
Description
Several genetic markers have shown associations with muscle performance and physical
abilities, but the response to exercise therapy is still unknown. The aim of this study was to test the
response of patients with long COVID through an aerobic physical therapy strategy by the Nordic
walking program and how several genetic polymorphisms involved in muscle performance influence
physical capabilities. Using a nonrandomized controlled pilot study, 29 patients who previously
suffered from COVID-19 (long COVID = 13, COVID-19 = 16) performed a Nordic walking exercise
therapy program for 12 sessions. The influence of the ACE (rs4646994), ACTN3 (rs1815739), AMPD1
(rs17602729), CKM (rs8111989), and MLCK (rs2849757 and rs2700352) polymorphisms, genotyped by
using single nucleotide primer extension (SNPE) in lactic acid concentration was established with
a three-way ANOVA (group × genotype × sessions). For ACE polymorphism, the main effect was
lactic acid (p = 0.019). In ACTN3 polymorphism, there were no main effects of lactic acid, group, or
genotype. However, the posthoc analysis revealed that, in comparison with nonlong COVID, long
COVID increased lactic acid concentrations in Nordic walking sessions in CT and TT genotypes
(all p < 0.05). For AMPD1 polymorphism, there were main effects of lactic acid, group, or genotype
and lactic acid × genotype or lactic acid × group × genotype interactions (all p < 0.05). The
posthoc analysis revealed that, in comparison with nonlong COVID, long COVID increased lactic
acid concentrations in Nordic walking sessions in CC and CT genotypes (all p < 0.05). Physical
therapy strategy through Nordic walking enhanced physical capabilities during aerobic exercise
in post-COVID19 patients with different genotypes in ACTN3 c.1729C>T and AMPD1 c.34C>T
polymorphisms. These findings suggest that individuals who reported long COVID who presumably
exercised less beforehand appeared to be less able to exercise, based on lactate levels, and the effect of
aerobic physical exercise enhanced physical capabilities conditioned by several genetic markers in
long COVID patients
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References
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