2017 Volume 7 Issue 1 Pages 13-17
The aim of the present study was to investigate the effect of squat exercise on muscle fatigue resistance prior to climbing a mountain. The participants of this study were 20 healthy adults. They were classified into an intervention group, wherein the participants performed the squat exercise prior to climbing a mountain and a control group wherein the participants did not perform the squat exercises. Muscle fatigue resistance was evaluated using surface electromyogram median power frequency (MDPF) while participants performed a contraction of the quadriceps muscle equivalent to 50% of the maximum voluntary contraction for 90 seconds. MDPF was measured from three muscles: the vastus medialis, vastus lateralis, and rectus femoris. Our results revealed that in the control group, the MDPF of all muscles after climbing degreased earlier than the MDPF after climbing. In the intervention group, the MPDF of the vastus medialis after climbing did not decrease and the MPDF of vastus lateralis after climbing decreased later than the MPDF prior to climbing. These results show that performing squat exercise prior to climbing a mountain can influence the muscle fatigue resistance of a single articular muscle.
