Biomechanical analysis of upper body movements between table tennis players with and without physical impairment
Yam, Jia Wen
Date of Issue2018-04-19
National Institute of Education
Background: The dynamical systems theory was widely used to study human movement coordination. Purpose: This study compared the upper body movement coordination between table tennis players with physical impairment (Para) and without (Non-Para). It was hypothesized that the coordination patterns between Para and Non-Para in forehand (Forehand) and backhand topspin drive (Backhand) were different. Methods: 21 male players (10 Para, 11 Non-Para) executed 30 Forehand and 30 Backhand at an interval of 10 trials per set using a ball projection machine. Kinematics data were recorded using 3DSuit to calculate continuous relative phase angle of Forehand and Backhand Shoulder-Elbow and Elbow-Wrist couplings. Four Forehand and four Backhand were selected for each participant in the analysis Results: There was no significant difference in all couplings but differences existed in the coupling patterns. For example, Forehand Shoulder-Elbow for Para changed from positive to negative and back to positive while it was relatively neutral for Non-Para. Similarly, Backhand Elbow-Wrist for Para changed from positive to negative and back to positive in contrast with Non-Para that changed from negative to positive and back to negative. Conclusion: Although there was no coordination pattern difference between Para and Non-Para, the differences in coupling patterns suggested that successful execution was achieved through a variety of movement strategies where outcome consistency did not required movement consistency. Results from this study could be used by Team Singapore’s Para to develop effective training system and regimes.
Final Year Project (FYP)