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股后群肌是由股二头肌、半腱肌和半膜肌组成的双关节肌.在短跑训练过程中,运动员常常由于股后群肌力量较弱,而影响其掌握正确的技术,甚至造成肌肉损伤,阻碍运动成绩的提高。从短跑的技术结构看,后蹬阶段,股后群肌参与伸髋:折叠前摆阶段.股后群肌使大、小腿充分折叠,能起到缩小摆动半径、加快摆动速度、节省屈髋
Posterior group of muscles is composed of biceps femoris, semitendinosus and semimembranosus muscle composed of two joints in the process of sprint training, athletes often posterior group muscle strength is weak, and affect their mastered the correct technology, or even Cause muscle damage, hinder the improvement of sports performance. From the technical structure of the sprint, after the pedal stage, the posterior group of muscles participate in the hip extension: the stage of folding before the swing. After the posterior group muscle large and leg fully folded, can play to reduce the swing radius, speed up the swing, save hip flexion