| 对沙滩、室内排球扣球起跳阶段时相特征的比较研究 |
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| 引用本文： | 李世明,郭荣,刘学贞.对沙滩、室内排球扣球起跳阶段时相特征的比较研究[J].体育科研,2004,25(1):44-46. |
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| 作者姓名： | 李世明 郭荣 刘学贞 |
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| 作者单位： | 1. 烟台师范学院,山东,烟台,264025
2. 北京体育大学运动人体科学学院,北京,100084 |
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| 基金项目： | 烟台师范学院科研基金项目 |
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| 摘 要： | 运用运动生物力学手段对沙滩、室内排球扣球起跳时相特征进行比较研究,结果发现:沙滩排球上步扣球起跳阶段依据人体下肢肌肉工作形式以及重心速度随时间的变化可划分为5个部分,即加速缓冲、减速缓冲、等长制动、加速蹬伸和减速蹬伸。其中沙滩排球加速缓冲与减速缓冲时间均过长,不利于缩短起跳时间,影响沙滩排球扣球的起跳效果。另外,沙滩排球扣球起跳的加速蹬伸时间占起跳时间的比重太小是影响在沙滩上起跳时间结构的关键因素。
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| 关 键 词： | 沙滩排球 室内排球 扣球 起跳 时相 运动生物力学 |
| 文章编号： | 1006-1207(2004)01-0044-03 |
| 修稿时间： | 2003年12月10 |
A Comparative Study on Phase Characteristics of Spike Jumping Between Beach and Indoor Volleyball |
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| LI Shi-ming,GUO Rong,LIU Xue-zheng.A Comparative Study on Phase Characteristics of Spike Jumping Between Beach and Indoor Volleyball[J].Sports Science Research,2004,25(1):44-46. |
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| Authors: | LI Shi-ming GUO Rong LIU Xue-zheng |
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| Abstract: | Phase characteristics are important to the jumping quality of spike in beach and indoorvolleyball. We studied them with sports biomechanics means. On the basis of the working form of muscleof lower limb and velocity variety with time of gravity center of human body, jumping phase can bedivided into 5 parts: accelerating cushion, deceleration cushion, balance brake, accelerating thrust anddecelerating thrust. The duration of both accelerating cushion and deceleration cushion is too long,making it difficult to shorten the duration of jumping. Therefore, the jumping effect of beach volleyball isaffected. In addition, the proportion of accelerating thrust duration in the total jumping time is small. Andtherefore, the structure of spike jumping time in beach volleyball is affected. |
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| Keywords: | beach volleyball indoor volleyball spike jumping phase sports biomechanics |
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