| 竞走运动中股直肌与股二头肌协调性对膝关节角度的影响 |
| |
| 引用本文： | 于红妍,王卫星,毛丽娟.竞走运动中股直肌与股二头肌协调性对膝关节角度的影响[J].北京体育大学学报,2010(9). |
| |
| 作者姓名： | 于红妍 王卫星 毛丽娟 |
| |
| 作者单位： | 上海交通大学体育系;北京体育大学; |
| |
| 基金项目： | 国家科技部课题(课题编号2006BAK37B03) |
| |
| 摘 要： | 目的:1)建立量化分析肌肉协调性的方法;2)分析肌肉协调性对运动技术的影响。研究方法:以我国六名优秀20 km竞走运动员研究对象,同步采集运动员在3.6 m/s和4.3 m/s直线运动时膝关节角度与股二头肌和股直肌表面肌电信号,并建立了肌电时序特征的定性分析和肌电数组和肌电模型相关性的定量分析肌肉协调性的方法。研究结果:股直肌和股二头肌在肌电的时序特征上表现出明显的协调性特征,而且二者的肌电数组和肌电模型与膝角相关性较高(r>0.70),但运动员间肌电模型一致性较差(r=0.339)。结论:1)本研究采用的对竞走运动中股直肌和股二头肌肌电时序的相关性分析方法是可以作为一种分析肌肉协调性的手段。2)竞走速度的提高引起了股直股和股二头肌的协调性下降。对膝关节技术的影响表现为:摆动腿在后摆阶段时膝角增大、着地瞬间膝角减小。
|
| 关 键 词： | 同步肌电 肌肉协调性 竞走 膝关节角度 |
The Coordination of Rectus Femoris and Biceps Femoris and Its Impact on Knee Joint Angle during Race Walking |
| |
| YU Hong-yan,WANG Wei-xing,MAO Li-juan.The Coordination of Rectus Femoris and Biceps Femoris and Its Impact on Knee Joint Angle during Race Walking[J].Journal of Beijing Sport University,2010(9). |
| |
| Authors: | YU Hong-yan WANG Wei-xing MAO Li-juan |
| |
| Institution: | YU Hong-yan1,WANG Wei-xing2,MAO Li-juan1(1.Physical Education Department of Shanghai Jiao Tong University,Shanghai 200030,China,2.Beijing Sport University,Beijing 100084,China) |
| |
| Abstract: | Purpose: To find a method to analyze muscles coordination by synchronized surface electromyography(SEMG) and its impact on event technique.Method: 6 elite 20Km race walkers are selected as the subject of the study.While they are walking in the 3.6m/s and 4.3m/s respectively,the SEMG signal of rectus femoris(RF),biceps femoris(BF)and kneel angle in synchronous way are recorded and then analyzed by comparing the correlation between RF and BF SEMG signals.Conclusion: During walking,RF and BF showed the charact... |
| |
| Keywords: | synchronized surface electromyography muscle coordination race walking knee angle |
| 本文献已被 CNKI 等数据库收录！ |
