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400米跑运动员体能的分配，是决定运动员400米成绩的主要因素之一，运动员体能的分配与运动员在400米跑中的速度变化密切相关，随着运动员在400米跑中速度的变化，人体体能的分配随速度的变化而形成时相差。比如：在400米跑中，运动员前200米用最高速度跑进与运动员用最高速度
The physical distribution of 400-meter runners is one of the main factors that determine the athletes’ 400-meter achievement. The distribution of athlete’s physical ability is closely related to the athlete’s speed change in the 400-meter run. As the athlete’s speed changes in the 400-meter run, The distribution of physical fitness varies with speed. For example: in the 400-meter run, the top 200 meters of athletes run with the highest speed with the athletes with the highest speed