《中国康复理论与实践》 ›› 2017, Vol. 23 ›› Issue (10): 1162-1165.doi: 10.3969/j.issn.1006-9771.2017.10.008

• 临床研究 • 上一篇    下一篇

健康青年下台阶时股内侧肌、股直肌和股外侧肌间的表面肌电变化

史昊楠1, 桂沛君1, 徐大卫1, 郭辉2, 谢瑛1   

  1. 1.首都医科大学附属北京友谊医院,北京市 100050;
    2.中国康复研究中心北京博爱医院PT3科,北京市 100068
  • 收稿日期:2017-03-03 修回日期:2017-05-02 出版日期:2017-10-25 发布日期:2017-11-03
  • 通讯作者: 谢瑛。E-mail: 13691446412@126.com。
  • 作者简介:史昊楠(1987-),女,汉族,北京市人,技师,主要研究方向:神经系统疾病的康复。

Surface Electromyography Changes of Vastus Medialis, Rectus Femoris and Vastus Lateralis during Stair Descent in Healthy Youth

SHI Hao-nan1, GUI Pei-jun1, XU Da-wei1, GUO Hui2, XIE Ying1   

  1. 1. Beijing Friendship Hospital, Capital Medcial University, Beijing 100050, China;
    2. Beijing Bo'ai Hospital, China Rehabilitation Research Center, Beijing 100068, China
  • Received:2017-03-03 Revised:2017-05-02 Published:2017-10-25 Online:2017-11-03
  • Contact: XIE Ying. E-mail: 13691446412@126.com

摘要: 目的 探讨健康青年下台阶时股内侧肌、股直肌及股外侧肌的肌肉收缩强度差异。方法 2016年,选取首都医科大学2015级30名健康在校大学生,将电极贴于优势侧股四头肌上,采集受试者下台阶过程中的股内侧肌、股直肌及股外侧肌的肌电信号。结果 在下台阶过程中,股直肌的最大收缩幅值和平均收缩幅值显著小于股内侧肌和股外侧肌(P<0.001);而股内侧肌和股外侧肌无显著性差异(P>0.05)。结论 健康青年在下台阶过程中股内侧肌及股外侧肌的活性显著高于股直肌;股内侧肌与股外侧肌协同收缩活性相当。

关键词: 下台阶, 股四头肌, 收缩强度, 表面肌电图

Abstract: Objective To evaluate the activities of vastus medialis, rectus femoris and vastus lateralis during stair descent in healthy youth.Methods Thirty healthy college students were recruited from the Capital Medical University 2015 admissions in 2016. The electrode was put on the dominant side of the quadriceps. Surface electromyography was used to record muscle activity during stair descent.Results During stair descent, the maximum amplitude and mean amplitude were significantly lower in rectus femoris than in vastus medialis and vastus lateralis (P<0.001). No significant difference was found between vastus medialis and vastus lateralis (P>0.05).Conclusion The activation of both vastus medialis and vastus lateralis during stair descent is significantly higher than that of rectus femoris. The coactivation of vastus medialis and vastus lateralis is equal in healthy youth.

Key words: stair descent, quadriceps, contraction intensity, surface electromyography

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