...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Sports >Effect of Descent Velocity upon Muscle Activation and Performance in Two-Legged Free Weight Back Squats
【24h】

Effect of Descent Velocity upon Muscle Activation and Performance in Two-Legged Free Weight Back Squats

机译：下降速度对两腿自由举重后蹲肌肉激活和性能的影响

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

摘要

Background: The aim of this study was to investigate the effect of descent velocity during two-legged full back squats upon muscle activation and squat ascent performance. Methods: Eleven healthy resistance-training males (age: 24 ± 6 years, body mass: 89.5 ± 21.5 kg, height: 1.84 ± 0.10 m) performed 4-repetition maximum (4-RM) two-legged full squats with slow, normal, and fast descent phases. Kinematics and muscle activity of ten muscles divided into five regions were measured. Results: The main findings were that maximal and minimal velocity were lower and maximal velocity occurred later in the slow condition, while there was no difference in second peak velocity or ascent displacement when compared with the normal and fast conditions. Furthermore, no differences in muscle activation were found as an effect of the descent velocity. Conclusion: It was concluded that the slow descent velocity had a negative effect upon the ascent phase, because of the lower peak velocity and peak force increasing the chance of failure. The lower velocities were not caused by lower pre-activation of the muscles but were probably a result of potentiation and/or utilization of stored elastic energy and/or the stretch reflex.
机译：背景：本研究的目的是研究两腿后卫深蹲速度对肌肉激活和下蹲上升表现的影响。方法：11位健康的抗阻力训练男性（年龄：24±6岁，体重：89.5±21.5 kg，身高：1.84±0.10 m）进行了4次最大重复（4-RM）两足足深蹲，缓慢，正常，以及快速下降阶段。测量分为五个区域的十块肌肉的运动学和肌肉活动。结果：主要发现是在慢速条件下最大和最小速度较低，最大速度出现较晚，而与正常和快速条件相比，第二峰值速度或上升位移没有差异。此外，没有发现肌肉激活的差异是下降速度的影响。结论：结论是缓慢的下降速度对上升阶段有负面影响，因为较低的峰值速度和峰值力增加了失败的机会。较低的速度不是由较低的肌肉预激活引起的，而可能是增强和/或利用存储的弹性能和/或拉伸反射的结果。

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