摘要
采用美国产Noraxon l6导遥测肌电DTS系统对大学生排球运动员扣球起跳动作的下肢肌肉表面肌电特征进行研究,经过详细分析得出:在起跳缓冲阶段,右腿股外侧肌的积分肌电值最大,为361μVs,其贡献率为27%;左腿胫骨前肌积分肌电值最大,为205μVs,贡献率为24%;在起跳蹬伸阶段,右腿股外侧肌积分肌电值最大,为412μVs,贡献率为26%;左腿股外侧肌积分肌电值最大,为429μVs,贡献率为22%。从而得出结论:在完成排球扣球起跳动作时,中枢神经系统对下肢肌肉的控制存在协同性和非对称性特征;在起跳蹬伸阶段,左右下肢肌肉表现出比缓冲阶段更高的协同性。
The purpose of this study is to analyze the characteristics of surface electromyography(EMG)of male volleyball players' lower limb muscles during the spike jumping.The data of surface electromyography is obtained through the Noraxon L6 telemetry DTS system.The analysis results show that the integrated EMG(iEMG)of right leg vastus lateralis is 361μVs,which is the maximum,and the contribution is 27%,while the iEMG of left leg tibialis anterior is 205μVs,and the contribution is 24%,during the phase of cushion;the iEMG of right leg vastus lateralis is 412μVs,which is the maximum,and the contribution is 26%,while the iEMG of left leg vastus lateralis is 429μVs and the contribution is22%,during the takeoff phase.The conclusions are drawn as follow:the control of lower extremity muscles by the Central Nervous System has shown cooperativity and asymmetry in the phase of spike jumping;the muscles of lower extremity has shown higher cooperativity in the phase of takeoff,comparing with the phase of cushion.
出处
《中北大学学报（社会科学版）》
2018年第1期105-110,共6页
Journal of North University of China：Social Science Edition
基金
山西省软科学研究项目:山西省竞技体育产学研协同创新的动力机制研究(2016041037-3)
山西省体育局科研课题:山西省优秀举重运动员备战第十三届全运会的科技攻关与服务(15TY115)
山西省教育科学"十二五"规划课题:中考体育加试政策对提升青少年体育素养影响的研究(GH-15040)
