Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Estimation of Joint Moment and Muscle Force in Lower Extremity During Sit-to-Stand Movement by Inverse Dynamics Analysis and by Electromyography

역동역학해석 및 근전도 신호를 이용한 앉기-서기 동작에서의 하지 관절 모멘트 및 근력 예측

  • Received : 2009.12.29
  • Accepted : 2010.08.10
  • Published : 2010.10.01
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Abstract

Sit-to-stand movement is a basic movement in daily activities. On the basis of this movement, the biomechanical functions of a person can be evaluated. The study of the joint kinematics, moment, and muscle coordination is necessary to understand the characteristics of the sit-to-stand movement. We have developed a motion-based program for inverse dynamics analysis and the electromyogram-based program for muscle force prediction. The joint kinematics and the kinetic results estimated on the basis of obtained motion data, ground reaction force, and electromyogram signals were compared with those reported in previous studies, and the muscle forces determined by the two methods were compared with each other. The methods and programs developed in this study can be used to understand biomechanics and muscle coordination involved in basic movements in daily activities.

앉기-서기 동작은 인간의 생체역학적 기능 정도를 결정할 수 있는 기본적인 일상생활 동작의 하나이다. 동작 중 발생하는 관절의 운동 정보와 모멘트, 그리고 근력을 예측하는 것은 앉기-서기 동작의 특성을 이해하는데 필요하다. 본 연구에서는 동작 기반 역동역학해석 프로그램과 근전도 기반 근력예측 프로그램을 개발하였다. 개발된 프로그램과 앉기-서기 동작 실험에서 측정한 동작, 지면반력, 그리고 근전도신호 정보를 이용하여 실험적 방법으로 측정하기 힘든 관절각도, 관절모멘트, 및 근력을 예측하고 기존 연구결과와 비교하여 검증하였다. 개발된 기법과 프로그램들은 일상생활 동작에서의 관절 생체역학과 근육 협응에 대한 지식을 얻는 데 사용될 수 있으리라 기대한다.

Keywords

References

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