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决定短跑速度的主要因素是步长和步频,步频是由运动员的接触地面时间及腾空时间决定的,接触地面时间和腾空时间越短,频率越快。7~13岁是发展步频的最佳时期,所以,提高步频来发展中小学运动员的速度非常重要。笔者通过多年的训练取得一套练习步频的方法供大家参考。一、原地快慢交替摆臂摆臂不仅能维持跑动中的身体平衡,促进支撑腿的后蹬,同时也促进腿的摆动频率。方法:原地站立,听击掌信号做练习。击掌要有快慢节奏,一般是慢一快一慢。每次练习3~4组,要求肩关节放松,前摆时向前用力,注意不要晃
The main factors that determine the speed of dashing are the step length and pitch. The pitch is determined by the athletes’ contact with the ground and the vacated time. The shorter the contact with the ground and the vacated time, the faster the frequency. 7 to 13 years old is the best time to develop pace, so it is very important to improve the pace to develop the speed of primary and secondary school athletes. The author through years of training to obtain a set of practice steps for your reference method. First, the alternating speed swing swing arm in situ can not only maintain the running balance, promote the support leg back pedal, but also to promote the leg swing frequency. Methods: standing in place, listening to the signal of the palm of your hand doing exercises. High-speed rhythm of the clap, usually slow and slow. Each practice 3 to 4 groups, requiring shoulder joint relaxation, forward force when forward, be careful not to shake