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[[alternative]]he Three Dimension Kinematics Analysis of Elite High School Male Volleyball Players Spike Down the Line

By [[author]]陳膺成 and 陳膺成

Abstract

[[abstract]]The major changes in international volleyball rule on 1999 while emphasize spiking as an effective attacking weapon . Fast and powerful spiking has been a tactics for volleyball offense in competition . The purpose of this study was to investigate the kinematics differences between elite and average high school volleyball players when spike the ball down the line . In addition , the correlation among post-impact ball velocity , jump height and other kinematics variables will also be investigated . The method of this study was sixteen high school male volleyball players participated in this study . The subjects were divided into two groups: elite players and average players . Two Peak high-speed cameras (120Hz)were used to collect the players spiking action . Peak Motus system was used to analyze the 3D kinematics motion . The Independent t-test was used to test the kinematics difference between two groups . Pearson’s correlation was used to determine the jump height and post-impact ball velocity with other kinematics variables . The results of this study were described followed: 1.The vertical velocity of body’s CG at takeoff , jump height, impact height, impact angle, and ball-release velocity were significant difference between elite players and average players. 2.For the sixteen subjects, there were significant correlation among the vertical velocity of body CG at takeoff , ankle and knee angle when body CG at lowest point , and post-impact ball velocity with jump height. 3.For the sixteen subjects, there were significant correlation among the impact angle, arm-striking velocity, elbow peak angular velocity, impact elbow angle, and jump height with post-impact ball velocity.

Topics: 排球選手, 直線扣球, 三維運動學, Elite volleyball players, Spike down the line, Three dimension kinematics, [[classification]]59
Year: 2010
OAI identifier: oai:ir.lib.ntnu.edu.tw:309250000Q/14372
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