世界优秀男子400m跑运动员身体形态与成绩模式特征分析

世界优秀男子400m短跑运动员平均最高速度产生在50—150m段落，速度明显下降发生在300m处；在300—350m段落，几乎所有运动员步长降至最短，冲刺阶段略有回升；大部分运动员步频在50—100m段落增大至最高水平，然后逐渐下降。步频与步长呈高度负相关；年龄与步长呈高度正相关；最高速度和速度耐力在很大程度上决定最终成绩。

Analysis of Characteristics of Body Morphology and Achievement Model of World Men's Excellent 400 m Runners

The average maximum speed of the world men's excellent 400 m runners appears in the section from 50 m to 150 m, the obvious slow-down happens in the place of 300 m, in the section from 300 m to 350 m the stride lengths of almost all the runners are shortened to the shortest extent, which are a bit longer during the finish of the race, and the stride frequencies of most runners are increased to the highest level in the section from 50 m to 100 m, and then decrease step by step. The correlation between stride length and stride frequency is negative, while that between age and stride length is positive. The maximum speed and speed endurance determine 400 m race to a great extent.