URL：https://www.researchgate.net/profile/Min-Hyeok-Kang/publication/253335380/figure/fig3/AS:298222753992706@1448113253691/Hamstring-stretching-exercises-Five-consecutive-26-s-hold-relax-hamstring-stretches.png
掲載元：https://www.researchgate.net/figure/Hamstring-stretching-exercises-Five-consecutive-26-s-hold-relax-hamstring-stretches_fig3_253335380
