一、前言短跑是田径运动中的重点项目.100米途中跑是人体发挥最高速度的阶段,跑的动作外形简单自然,但内涵却复杂丰富.跑步动作结构上的差异和运动力学机制的合理程度,是形成短跑运动员速度水平的原因之一.技术合理,能保证运动员运动素质最大限度的发挥,因此国内外短跑界都重视技术理论的研究工作.对短跑途中跑动作结构的研究已有较长久的历史,国内外学者论述繁多,指导短跑实践取得了明显效果.进入70年代以来,随着世界田径水平的迅猛发展,场地条件的改善也促使短跑基本技术出现了 I. Introduction Sprinting is the key item of track and field sports.It is the stage that the human body exerts the highest speed in the 100-meter running, the movement of the running is simple and natural, but the connotation is complex and rich.The structural differences of the running motions and the rationality of the kinematic mechanism Is one of the reasons for the formation of the speed level of sprinters.Technical and reasonable, to ensure the athlete’s athletic performance to maximize the play, so the domestic and international sprinter circles attach importance to the research of the theory of technology.To run on the middle of the sprint structure has been studied for a long time History, both domestic and foreign scholars have discussed a great deal and achieved remarkable results in guiding sprint practice.With the rapid development of track and field in the world since 70’s, the improvement of site conditions has led to the emergence of sprint basic technology