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首页> 美国卫生研究院文献>Journal of Human Kinetics >Effect of an Arm Swing on Countermovement Vertical Jump Performance in Elite Volleyball Players
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Effect of an Arm Swing on Countermovement Vertical Jump Performance in Elite Volleyball Players

机译：挥臂动作对优秀排球运动员反向运动垂直跳动性能的影响

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The aim of this study was to determine how elite volleyball players employed the arm swing (AS) to enhance their jump performance. The study assessed how the AS influenced the duration and magnitude of the vertical ground reaction force (VGRF) during the main phases (preparatory, braking and accelerating) of the countermovement vertical jump (CMVJ), the starting position of the body at the beginning of the accelerating phase and the moment when the AS began contributing to increasing the jump height. Eighteen elite volleyball players performed three CMVJs with and without an AS. Kinetics and kinematics data were collected using two Kistler force plates and the C-motion system. The time and force variables were evaluated based on the VGRF, and the position of the body and the trajectory of the arm movement were determined using kinematic analysis. The AS improved the CMVJ by increasing the jump height by 38% relative to jumping without an AS. The AS significantly shortened the braking phase and prolonged the accelerating phase, however, it did not influence the preparatory phase or the overall jump duration. The AS also significantly increased the average force during the accelerating phase as well as the accelerating impulse. The AS upward began at 76% into the overall jump duration. The AS did not influence the body position at the beginning of the accelerating phase. These findings can be used to improve performance of the CMVJ with the AS and in teaching beginning volleyball players proper jumping technique.
机译：这项研究的目的是确定精英排球运动员如何利用手臂挥杆（AS）来提高他们的跳跃表现。这项研究评估了AS在反向运动垂直跳跃（CMVJ）的主要阶段（准备，制动和加速）（人体开始时的起始位置）如何影响垂直地面反作用力（VGRF）的持续时间和强度。加速阶段和AS开始增加跳跃高度的时刻。 18名精英排球运动员在有和没有AS的情况下进行了3次CMVJ。使用两个奇石乐测力板和C-motion系统收集动力学和运动学数据。基于VGRF评估时间和力变量，并通过运动学分析确定身体的位置和手臂运动的轨迹。与没有AS的跳跃相比，AS通过将跳跃高度增加38％来改善了CMVJ。 AS显着缩短了制动阶段，并延长了加速阶段，但是，它不影响准备阶段或整个跳跃时间。在加速阶段以及加速脉冲过程中，AS也显着增加了平均力。在整个跳跃持续时间内，AS的上升以76％开始。在加速阶段开始时，AS不会影响身体位置。这些发现可用于改进带有AS的CMVJ的性能，以及在教初排球运动员正确的跳跃技巧方面。

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