摘要
目的:研究预观察青年男子羽毛球运动员原地正手杀球和跳跃腾空正手杀球动作上肢肌肉工作特点的差别。方法:研究使用高速摄像机和表面肌电仪同步测量8名国家青年男子羽毛球运动员原地正手杀球和跳跃腾空正手杀球动作。结果:运动学数据显示两种杀球动作中各个环节的速度都是由近端到远端依次递增;伸髋角和引臂角以及击球瞬间上肢各个环节的角度没有统计学差异,但杀球速度有统计学差异(P<0.05)。尽管两种杀球动作总体来说相近,但是在两种杀球动作中部分上肢肌肉的激活时序、击球前肌电幅值有显著差异,并且发现在球拍与球接触之前的时相,跳跃腾空正手杀球上肢肌肉的电活动更强。结论:尽管两种杀球技术动作结构很相似,但是原地杀球与跳跃腾空杀球的神经肌肉控制模式不同,跳跃腾空杀球时,运动员的神经中枢要提前激活一些肌肉,并且使一些肌肉的激活水平更高,以便获得更高的球速。
Objective: This study aims to examine different work characteristics of upper limb muscles when standing forehand smash and jump smash in national young male badminton players. Methods: Used two high-speed phantoms and surface electromyography( sEMG) to measure eight national young male badminton players when they made standing forehand smash and jump smash. Results: Kinematic data showed that the velocity increased in sequence from proximal to distal. Stretching hip angle,stretching arm angle,and segment angles in the upper extremities at contact had no significant difference,but smash velocity had significant difference( P < 0. 05). Although the two types of smashes were similar,onset time and amplitudes of upper limb muscles had some significant differences. The jump smash exerted a higher sEMG activity than standing forehead smash during the action,especially before phase contact. Conclusion: Though the two smashes have similar skill structure,but the control models of neuromuscular are different. Jump smash requires to recruit nerves to activate athletes' muscles in advance and keep the higher active level to gain higher velocity.
出处
《北京体育大学学报》
CSSCI
北大核心
2014年第2期82-85,90,共5页
Journal of Beijing Sport University
