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短跑项目属体能主导类速度性项群。短跑项目的特点是在短时间内有效地发挥机体体能,使机体产生最大的动作速度和移动速度。短跑项目的特点决定了短跑运动员大腿屈伸肌群在运动过程中始终保持高频率、高强度的快速交替收缩。大腿屈伸肌群的快速交替
Sprint items belong to the body can dominate the speed class items. Dash project is characterized by a short period of time to effectively play the body energy, the body produces the maximum speed of movement and speed. The characteristics of the dash project determines the sprinter thigh flexion and extension muscles in the exercise process has always been to maintain high frequency, high intensity rapid alternating contraction. Quick turn of the thigh flexion and extension muscles