原地连续纵跳动力学信息变化的特征  

Characteristics of the change of kinetic information regarding continuous vertical jumping in situ

作　　者：曹志飞[1] 李世明[1] 朱红红[1] 

机构地区：[1]鲁东大学体育学院,山东烟台264025

出　　处：《体育学刊》2009年第12期101-106,共6页Journal of Physical Education

基　　金：山东省研究生教育创新计划项目(SDYY08078);鲁东大学科研基金项目重点课题(L20073001)

摘　　要：运用录像拍摄和三维测力同步测试的方法研究原地连续纵跳动力学信息变化特征。结果显示,缓冲结束瞬时力值、蹬伸力峰值、蹬伸平均功率和冲量都随着原地连续纵跳运动时间的延长而逐渐减小(P<0.05);不同频率原地连续纵跳缓冲结束瞬时力值和蹬伸力峰值对起跳效果的影响程度是不同的,60次/min频率作用下缓冲结束瞬时力值和蹬伸力峰值明显大于40次/min和50次/min两种频率(P<0.05),而起跳效果却较40次/min和50次/min两种频率差(P<0.05);3种频率原地连续纵跳过程中运动前期的恢复系数都大于1。By means of video shooting and synchronous 3D force measurement, the authors studied the characteristics of the change of kinetic information regarding continuous vertical jumping in situ, and revealed the following findings： the instant force at the end of buffering, peak jumping force, average jumping power and impulse gradually diminished with the elapse of the time of continuously vertical jumping in situ （P〈0.05）; during continuous vertical jumping in situ at difference frequencies, the instant force at the end of buffering and peak jumping force have a different effect on the initial jumping effect; measured at the frequency of 60 times/min, the instant force at the end of buffering and peak jumping force are significantly greater than the same measured at the frequencies of 40 times/rain and 50 times/min, yet the initial jumping effect is worse than the same measured at the frequencies of 40 times/min and 50 times/min; the recovery coefficient at the early stage of continuous vertical jumping in situ at the three frequencies are all greater than 1.

关 键 词：人体动力学 原地纵跳 排球运动员 

分 类 号：G804.6[文化科学—运动人体科学]