Journal of the Institute of Electronics Engineers of Korea SC (전자공학회논문지SC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Study of Relationship Between EMG Activation of Thigh Muscle(Rectos Femoris, Vastus Iateralis Muscles) and Knee Angle During Bicycle Exercise

대퇴근활성화에 대한 자전거 운동 시 근전도와 슬관절 각도와의 상관관계 연구

  • Jang, Won-Seuk (Department of Medical Engineering, College of Medicine, Yonsei University) ;
  • Kim, Sung-Min (Department of Bio System College of Dongguk Univ) ;
  • Kang, Seung-Ho (Dongguk University Research Institute of Biotechnology) ;
  • Kim, Nam-Hyun (Department of Medical Engineering, College of Medicine, Yonsei University)
  • 장원석 (연세대학교 의과대학 의공학교실) ;
  • 김성민 (동국대학교 바이오시스템대학) ;
  • 강승호 (동국대학교 생명과학연구원) ;
  • 김남현 (연세대학교 의과대학 의공학교실)
  • Published : 2009.07.25
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Abstract

In this study, we investigated relationship of muscular activity in thigh muscle and knee joint angle from bicycle exercise. The EMG signals of 16 persons were measured from rectus femoris and vastus lateralis muscles. The experiment was performed in 5 steps according to saddle distance and 60RPM/200W loads were applied for 1 minute at each step. EMG activation of rectus femoris and vastus lateralis muscles and knee joint angle were recorded using surface EMG and motion analysis system, respectively. Experimental results of inter relationship between EMG activation of thigh muscles and knee joint angle showed high correlation from Step 1. The unified EMG activation of two muscles and knee joint angle showed negative correlation(-0.97).

본 연구는 자전거운동에서 슬관절 각도와 대퇴근 활성도의 관계를 확인하고자 하였다. 총 16명의 20대 남성을 대상으로 실험을 진행하였으며 대퇴근의 대퇴직근과 외측광근에서 EMG 신호를 측정하였다. 실험은 안장거리에 따라 총 5단계로 나누었으며 단계별로 1분씩 60RPM, 200W의 부하로 운동을 하였고 슬관절 각도는 동작분석 장비를 이용하여 측정하였다. 실험결과는 슬관절 각도와 대퇴직근 외측광근 각각은 상관관계가 Step 1에서만 높게 나타났으며 그 외에서는 나타나지 않았다. 이러한 이유는 개인의 습관에 따라 두 근육의 활성도가 다르기 때문으로 사료된다. 그러나 대퇴근의 근전도와 슬관절 각도를 비교한 결과 높은 상관관계가 나타났다.

Keywords

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