Synergic analysis and dynamics pattern of human normal gait during swing phase
Yang, Y.; Wang, R.; Hao, Z.; Jin, D.; Zhang, H.
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi 23(1): 69-73
2006
ISSN/ISBN: 1001-5515 PMID: 16532813 Document Number: 600345
A dynamics model of human lower extremity, which combines musculotendon dynamics and muscle excitation-contraction dynamics, is presented. With this model, a motion process of normal gait during swing phase is numerically analyzed by use of the optimal control theory. The model was verified using experimental kinematics, muscles activation, and electromyographic data. The result showed that the tri-phasic activation pattern and synergistic muscles displayed during a normal gait in swing phase. The pattern consists of three distinct phases, i. e., acceleration during moving initiation, braking the moving segment, and posture control at the final specified position.