Document Type : Full Research Paper


1 M.Sc, Biomechanics Department, Faculty of Biomedical Engineering, Science and Research Branch of Islamic Azad Univesity

2 Associate Professor, Biomechanics Department, Faculty of Biomedical Engineering, Amirkabir University of technology

3 Professor, Medical engineering and Physics Department, Shahid Beheshti University of Medical Science

4 Ph.D Student, Biomechanics Department, Faculty of Biomedical Engineering, Science and Research Branch of Islamic Azad Univesity

5 Ph.D Student, Biomechanics Department, Faculty of Biomedical Engineering, Amirkabir University of technology



Most of the recent biomechanical researches have been focused on the stability of people with disabilities and a few researches have been done on the athletes with high balance skill.The methods of elite athletes in keeping the balance can state valuable information about balance strategies and effective parameters on balance. In this study we calculate local dynamical stability of musculoskeletal systems during a hard balance motion. Eight non elite athletes and six elite athletes in Wushu participatedin this study. Kinematic parameters for quantitative assessment of postural fluctuations were recorded by VICON ® Motion Analysis System. Using Lyapunov stability theory, stability and preparation of athletes were evaluated and the best model in performing the balance motion was shown to the coaches. Results from this study showed that motion pattern and preparation of athletes are effective in the displacements of center of mass and center of pressure and finally the stability of athletes.


Main Subjects

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