• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Human Movement >Postural Sway Response to Rebound Jumps of Different Duration
【24h】

Postural Sway Response to Rebound Jumps of Different Duration

机译：姿势摇摆对不同持续时间反弹的反应

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Purpose. The study compares the sway variables after continuous CMJs eliciting different level of proprioceptive stimulation determined by percentage of max height of the jump. Basic procedures. A group of 11 aerobic dancers performed in random order repeated jumps with maximal effort until the jump height dropped to 75%, 50%, and 25% of previously established max jump achieved in non-fatigued conditions. The height of CMJs was calculated from flight times registered by FiTRO Jumper. Thirty seconds prior to and two minutes after exercises the COP velocity was registered at 100 Hz by means of posturography system FiTRO Sway Check based on dynamometric platform. Main findings. Results showed that max height of the jump (MJ) decreased from 27.7 ± 2.8 cm to 20.1 ± 2.6 cm when subjects matched 75% of 1MJ, to 13.8 ± 1.6 cm at 50% of 1MJ, and to 6.9 ± 0.8 cm at 25% of 1MJ. The COP velocity was significantly (p ≤ 0.01) higher after jumps dropped to 75% of 1MJ as compared to baseline (from 9.2 ± 1.6 mm/s to 14.5 ± 2.4 mm/s). Its further significant (p ≤ 0.05) increase was observed after jumps dropped to 50% of 1MJ (to 19.6 ± 2.6 mm/s). However, there was only slight increase in COP velocity after jumps dropped to 25% of 1MJ (to 21.4 ± 3.2 mm/s). Conclusions. Taking into account a gradual increase in sway velocity after jumps matched 75% and 50% of 1MJ and its no further increase after jumps matched 25% of 1MJ, it may be assumed that post-exercise balance impairment is not linearly related to the level of proprioceptive stimulation.
机译：目的。这项研究比较了连续CMJ引发不同程度的本体感受刺激后的摇摆变量，这些变化由跳跃最大高度的百分比决定。基本程序。一组11名有氧舞者以最大的努力以随机顺序进行重复跳跃，直到跳跃高度下降到先前在非疲劳状态下达到的最大跳跃的75％，50％和25％。 CMJ的高度是根据FiTRO Jumper记录的飞行时间计算得出的。锻炼前三十分钟和锻炼后两分钟，通过基于测力平台的姿势描记系统FiTRO Sway Check记录COP速度为100 Hz。主要发现。结果显示，当受试者匹配1MJ的75％时，跳跃的最大高度（MJ）从27.7±2.8 cm降至20.1±2.6 cm，在1MJ的50％处的跳跃最大高度降至13.8±1.6 cm，在25％的条件下降至6.9±0.8 cm 1MJ。与基线相比，跳跃下降至1MJ的75％后，COP速度显着提高（p≤0.01）（从9.2±1.6 mm / s降至14.5±2.4 mm / s）。在跳跃下降到1MJ的50％（下降到19.6±2.6 mm / s）之后，观察到其进一步显着（p≤0.05）增加。但是，在跳降至1MJ的25％（降至21.4±3.2 mm / s）之后，COP速度仅略有增加。结论。考虑到跳跃达到1MJ的75％和50％之后摇摆速度逐渐增加，而跳跃达到1MJ的25％之后摇摆速度没有进一步增加，则可以假设运动后平衡减损与肌肉水平无关。本体感受刺激。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号