大幅度展掌摆臂对100m运动员步频、步幅的影响分析

All-range stretch hand and swing arm for 100m sprinters

运用文献资料、录像分析等方法,对世界优秀100m运动员格林、贝利、刘易斯、乔伊娜、琼斯、奥蒂、德费斯和我国十运会100m男、女前8名运动员的摆臂方式进行比较分析。结果表明:刘易斯、格林、乔伊娜、琼斯等运用的大幅度展掌摆臂技术不仅可以使后蹬力量增大,步频增加,而且对增大步幅也有贡献,但其摆动方式需要较大的肩带力量作保证,否则会影响摆动速度。

The parpose of Ks study is to compare and analyze the swing arm method of world elite 100m lop 8 sprint, ers in the 10th National Games with the video data and involved articles.The result indicates that the method of all- range stretch hand and swing arm has sufficient biomechanie basis, and it has a distinctively positive effect on the power of aggrandizement and enlargement of step length. However, it still demands big shoulder power to ensure the swing method,and would otherwise affect the swing speed.