Comparison of Center of Mass Displacement and Velocity Error of Artistic Gymnastic Movements Measured with Different Anthropometric Approaches

Abstract

The main purpose of this study was to compare the deviation of human segment center of gravity displacement and velocity in different models of human body segment parameters through video analysis. All human movements in our study were videotaped by JVC camera (60 Hz) and analyzed through the APAS video-based motion analysis system for seven different human segment models. The collected kinematic parameters (center of gravity displacement and velocity) were analyzed by using dependent sample t test and the estimated standard errors to examine the difference of seven segment models. The results showed that Dempster model, Clauser model, Zatsiorsky model had significant (p＜.05) difference in the displacement and the velocity with the individual segments of model. Furthermore, those three models had greater standard error in the displacement and velocity. The individual segment model has smaller standard error compared to Cheng CT model, Ho MRI model and Cheng MRI model. These results suggest that future studies engaged in male artistic gymnasts should apply male gymnast segment model to analyze or apply Cheng CT model, Ho MRI model and Cheng MRI model, if gymnast segment model was not available.