跳深着地阶段下肢所测肌肉的表面肌电活动特征研究  

Research on EMG Features of Lower Limb Muscles in Drop Jumping

作　　者：田进[1] 周家颖[2] 

机构地区：[1]西南交通大学体育部,成都610031 [2]西安体育学院体育系,西安710068

出　　处：《西安体育学院学报》2009年第3期341-346,共6页Journal of Xi'an Physical Education University

基　　金：陕西教育厅科研计划自然基金项目(08JK417)

摘　　要：采用ME6000T16和Kistler三维测力台对12名一级运动员和12名三级运动员在正常状态下和在相对疲劳状态下(完成较大负荷练习后)完成不同下落高度跳深的完整动作进行了同步测试。测试结果表明:正常状态完成不同下落高度跳深时,同一名运动员下肢所测肌肉所表现出的表面肌电活动变化趋势和肌肉的协调模式是一致的;不同运动员在同一下落高度跳深时,同名肌肉的表面肌电活动的强度和变化趋势存在差异,尽管这块肌肉在下肢肌肉活动时所起的作用相同。相对疲劳状态下(完成较大负荷练习后)跳深时,着地阶段运动员所测肌肉的表面肌电活动变化趋势和所测肌肉间的协同关系发生了较大改变等。This study employed a 3D Kistler Force Measurer and sixteen Wireless Telemetering EMG Testing Systems to conduct the simultaneous testing on 12 third- class and 12 first - class athletes performing the drop jumping at different whereabouts heights, and in both normal and relative fatigue states （after heavy loading exercise）. During the normal state, the same athlete＇s active mode of EMG of the muscles measured at different whereabouts height remains the same; it does not change essentially with the changes in whereabouts heights. When different athletes perform drop jumping at the same whereabouts height, the active strength of EMG and changing tendency differ, although the same muscle performs the same function in completing the same intensity work.. During the relative fatigue state （after completion of heavy loading exercise）, Changes also happen to the forcibly features, the ＂pre - activation＂ modes of the eight tested muscles, EMG movement modes, and the modes of working ratio in the course of movement, and the coordinating modes between muscles.

关 键 词：特征 表面肌电 下肢肌肉 跳深 

分 类 号：G804.21[文化科学—运动人体科学]