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本文通过对人体体能中三种供能系统供能特点的分析，剖析了运动员在400m跑中体能分配的生理学机制，根据人体体能中三种能量在400m跑中所起的作用，提出在400m跑中科学地安排运动员的体能分配，能有效地提高当前运动水平状态下运动员的成绩．
Based on the analysis of the energy supply characteristics of the three kinds of energy supply systems in human body, this paper analyzes the physiological mechanism of the physical distribution of the athletes in the 400m run. According to the function of the three kinds of energy in 400m running, Scientifically arrange the physical distribution of athletes, can effectively improve the current level of athletes under the athletic performance.