| （1.Department of Sports，Nanjing Institute of Physical Education，Nanjing 210033，China；2.Center of Volleyball Management，Jiangsu Sports Bureau，Nanjing 210033，China；3.Department of Research，Nanjing Institute of Physical Education，Nanjing 210014，China) Abstract: Basing their research objects on 12 second line players in Jiangsu Women’s Volleyball Team, the authors used a high speed video camera to respectively shoot the technical moves of 3 spiking jump serves and 3 floating jump serves made by the 12 players, dissected the video by using a piece of motion analysis software, analyzed biomechanical differences between a spiking jump serve and a floating jump serve made by the female volleyball players from Jiangsu province, and revealed the following findings: a spiking jump serve produced higher values than a floating jump serve in terms of ball speed as well as COM horizontal displacement, jump height, spike height, ball hitting height and COM speed after jump; moreover, the linear speed of the upper limb was higher when such a player was making a spiking jump serve, which resultantly provided a favorable initial speed for the last whipping move made by the swinging arm. Conclusion: although there is a certain risk of failure in a spiking jump serve, it is more aggressive, and will bring great pressure to bear on the serve receiving player.
Key words: sports biomechanics；spiking jump serve；floating jump serve；female volleyball player；Jiangsu |
