THE INFLUENCE OF DIFFERENT SERVICE STYLES ON VOLLEYBALL PLAYER’PECEPTION:A KINEMATICS STUDY

• Main Authors: Ti-yun Chung, 鍾玓芸
• Other Authors: Chenf-u Huang
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/69c4zr

碩士 === 國立臺灣師範大學 === 運動競技學系 === 97 === The purpose of this study was to investigate the kinematics on receiving players of two serving styles (overhead floating serve and jump spike serve). Twelve libero players played in Chinese Taipei University Volleyball League divisionⅠandⅡ( 6 players from divisionⅠand 6 players fromⅡ; 3 male and 3 female players represented each division) participated in this study. The video of serving was recorded by two synchronized Fastec Inline high-speed cameras (250Hz). Kwon 3D motion analysis system was used to analyze 2D kinematics data (2D-DLT) including serving ball speed, ball speed after receiving, serving angle, the angle between ball and both wrists after receiving, the duration of hitting the ball while serving to receiving, the angles between upper extremities before receiving and at receiving the ball, the angles between lower extremities before receiving and at receiving the ball. Two-way ANOVA was used to analyze the kinematics and kinetics data by SPSS 13.0. Significant level was set at α＝.05. Furthermore, descriptive statistics was used to descried individual differences within subjects according to instant speed, duration, and angle. Results: 1. There are significant differences between serving speeds and angles on different serving styles. (p<.05) 2. There are significant difference on velocities of center of mass on different serving styles. 3. Within the female group ( both division ⅠandⅡ), there are no significant differences on the angles between upper extremities before receiving and at receiving the ball, either were the angles between lower extremities before receiving and at receiving the ball. But there are significant differences on the angles of wrists and the angle of elbow at receiving the ball (p<.05). 4. Within the male group (both division ⅠandⅡ), there are significant differences on the angles of wrists and the angles of elbows(p<.05), and on the angles of elbows (p<.05). But no significant difference found on the angles between lower extremities before receiving and at receiving the ball.