通过对短跑途中跑着地缓冲技术的再研究，发现着地缓冲后期人体作加速运动的主要动力来源。运用局部观与整体观的辩证关系，认识到训练水平越高的短跑运动员的着地缓冲距离为什么要相对增长的原因。论证脚着地瞬间，脚相对于地面向前的水平速度只是表现为向零的趋近。 After re-studying the running-in cushioning technology on the way of sprint, we found that the main source of motivation for the accelerated movement of the body in the late cushioning. Using the dialectical relationship between the local view and the holistic view, I realized that the higher the training level is, the more the ground cushion distance of the sprinters should be increased. Demonstrate foot to ground moment, foot relative to the ground forward horizontal velocity is only shown as approaching to zero.