第十一届世青赛中黄海强过2.32m时起跳技术的运动学分析

A Kinematical Analysis on Huang Hai-qiang's Take-off Technique when Clearing the Height of 2.32m during the 11th IAAF World Junior Championship

通过对第十一届世界青年田径锦标赛男子跳高冠军黄海强起跳技术的三维运动学分析,结果表明:该运动员起跳结束瞬间,起跳腿髋、膝、踝三关节蹬伸较充分,但是两手臂和摆动腿摆动速度较低、摆动幅度较小;起跳瞬间的水平速度和垂直速度的绝对值较低,垂直速度低是阻碍他运动成绩提高的最主要原因;在起跳时间上,与国外优秀运动员没有明显差异;身体重心的最高点位于横杆的后方,最后一步步长相对较小。

This paper studies the men＇ s high jump champion, Huang Hai-qiang＇ s take-off technique during the 11th IAAF World Junior Championship from the point of view of three-dimensional kinematics. The result shows that Huang＇s three joints of take-off leg hip, knee and ankle are fully pedaled and stretched at the finishing point of his take-off, but the swinging velocity of his two arms and a swinging leg is rather low and the swing- ing range is relatively small;the absolute value of his horizontal velocity and vertical velocity is relatively low in the instant of take-of/and the low vertical speed is the main reason to hinder his athletic improvement; there is no obvious difference from interna- tional elite high-jumpers on the time of take-off;the highest point of his body＇s center of gravity is at the back of the horizontal pole and the length of his last step is relatively short.