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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

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.

Keywords

Inverse Dynamics Analysis;Muscle Force;Sit-to-Stand;Electromyogram (EMG);Biomechanics

Acknowledgement

Supported by : 경희대학교

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