Study on the Factors of the Speed Changes in Different Stages on High Level Man-triple Jumping in Colleges

By comparing the speed changes in different moments of high level male-triple jumping in colleges with photographs and record analysis,this article shows that the level speed of male-triple jumping has decreased in the following aspects: help to run,pedal,rise to jump,the single foot jump,the stride jump,jump up etc,especially the stride jump which becomes the main factor for the result.