第29届奥运会竞走比赛运动员的速度变化特征

Characteristics of the first eight athletes' speed change in the 29th Olympic walking matches

通过文献资料、数理统计等方法,对2008年北京奥运会竞走比赛各项目前八名运动员的分段成绩进行统计分析,结果表明:20公里和50公里项目全程平均分段速度表现出不一样的曲线规律,20公里曲线比较平稳,而50公里从第四名开始速度下降率提高。女子20公里前八名的速度特征主要表现为双峰型、匀速型和下降型,表现为双峰型的运动员取得了较好的名次;男子50公里竞走主要表现为单峰型、匀速型和下降型,表现为单峰型和匀速型相结合的运动员赢得了比赛的最后胜利。

Based on the methods of document literary and mathematic statistics,the paper analyzes the first eight athletes＇ spilt times in the 29th Beijing Olympic walking matches.The results show that the speed curve of the whole project is different between 20 km and 50 km.It is more stable in 20km,but it is down from the forth in the 50km.The characteristics of speed in female-20km show three types,such as double-peak,uniform and drop.The athletes who used the double-peak won the good performance.The male-50km also shows three types：single-peak,uniform and drop.The athletes who used the single-peak and uniform won the final success.