体育动作中平衡问题的定性和半定量分析

The Quantitative and Qualitative Analysis of the Balance of Physical Maneuvering-Starting Point of Running

起跑的目的在于使身体尽快的从静止状态转入运动状态,并要求在最短的时间内尽快的提高运动速度。通过对人体整体的分析,综合所有外力平衡条件∑F=0、∑M=0,找出外力之间的关系,建立力学模型,通过简化力系,对起跑这个动作进行定性半定量分析,从而达到快速起跑的目的。

Starting point of running enables the human body to change from the static condition to moving one at a moment＇ s notice. It requires the fastest speed within the shortest time. According to the analysis of the structure of the human body, we should integrate a balance condition of all the external power∑F=0、∑M=0. Based on the relationship between the external forces and the established mechanical model according to simplifying forces sys- tem, we could analyses qualitative and semi - quantitative of starting point of running.