Analysis of Human Kinetic Chain using Digitized Video Pictures
Video Motion Analysis System
Human Kinetic Chain
Polynomial Regression Curves
The purpose of this study is to develop a video motion analysis system and to analyze the human kinetic chain during tennis service movements. The video digitizer and frame buffer were used to transfer the video picture to the computer. Polynomial regression curves of velocity were calculated from coordinate data. Relationships between maximal，minimum and points of inflection of racket head velocity and maximum wrist joint velocity were examined to solve the differential equations from velocity curves. The results of this study show that in this investigation that the phenomenon of maximum acceleration of a racket head caused by the negative acceleration of the wrist joint was associated with human kinetic chain.
Departmental Bulletin Paper