Kinematical analysis of volleyball setter in different set movement

[[abstract]]The main purpose of this study was to compare the kinematical differences among the volleyball sets, those were the 4th position long shot, the 2nd position long shot, the B-quick spike movement and the D-quick spike movements. Seven college female volleyball setters were served as the participants. Two Redlake high-speed cameras (125Hz) and Kwon3D image software were used to record and analyze the 3D setting image. The variables were tested by Friedman two-way analysis of variance nonparametric statistical test which was calculated by SPSS 12.0, and the post-hoc comparison was calculated by the Excel software. The correlation of the movements parameters was tested by Pearson product-moment correlation coefficient analysis, the significant levels was set as α = .05. The results were as followed, in the four kinds set up movements, the contact height and the 4th position long shot were significantly lower than the other three set up movements. The front set or back set movement and the elbow joint in each group were significant different. The results showed that the experimental participants set movement, the elbow was the key point. The duration of the ball between contacted and the release, the front set was shorter than the back set. And correlation analysis showed the D-quick spike movement, the wrist join and the duration of the ball between contacted and the release were negatively correlated.