1．前言当今短跑技术发展的趋势主要是动作的规范化和结构的合理化，体现在动作的幅度加大，节奏变快，同时动作的经济性进一步提高，能源的合理配备进一步加强，因而明星层出不穷，成绩稳步上升，并多数打破了人们认为的极限成绩。但成绩能否再次提高，极限能否再次突破，到现 1. Preface The trend of development of sprint technology is mainly the standardization of movement and the rationalization of structure. It is reflected in the increase of the movement range, the faster pace of rhythm, the further increase of the economy of movement and the further rationalization of energy supply, so that the stars are in an endless stream and the result is steady Rise, and most of the people broke the limit results. However, the results can be increased again, the limit can once again be a breakthrough, until now