中国速度轮滑运动员疾跑阶段关节角速度分析

Joint Angular Velocity Analysis on the Sprint Techniques of Speed Roller Skating Athletes in China

为了准确地反映现阶段中国速度轮滑运动员疾跑技术的特点和水平,运用影像测量与解析和数理统计等方法获取运动员疾跑技术的运动学参数数据。运用运动学方法,对中国优秀速度轮滑运动员疾跑技术的实际情况进行研究。重点从疾跑过程中运动员关节角速度的变化分析,结果表明浮动腿的收缩、摆动对髋关节角速度的变化影响较大,浮动腿的摆动对膝关节角速度的影响较大,为提高该项目竞技能力提供新的理论基础。

In order to accurately reflect the characteristics and level of Chinese speed roller skating players＇ sprint technique at present,the video measure and analysis,mathematical statistics and the other methods are carried out to obtain the kinematical data of the players using dash technique. With kinematical methods,the actual circumstances of Chinese top athletes were studied. We focus on analyzing the changes of athletes＇ joint angular velocity in the process of dash. The results show that the pull-back and the swing of the floating leg have great influence on the angular velocity of hip joint,as well as the swing of floating leg influences the angular velocity of knee joint greatly. The result supplies the latest theoretical base for enhancing the competitive ability.