在年轻成年人中,最大的偏心和同度多关节下肢力量和垂直跳跃性能之间的相关性
Joonsun Park1,2, Cassidy Weeks3, Brennan J Thompson1,2
1Kinesiology and Health Science Department, Utah State University, Logan, UT 84322, USA.
最大偏心 (MES) 和同度 (MIS) 强度与垂直跳跃性能正相关,增强反应强度和跳跃高度. 较强的肌肉减少了在异常阶段的能量吸收,改善了弹性能量回报,以获得更好的跳跃能力.
科学领域:
- 生物力学 生物力学
- 运动生理学 运动生理学
- 体育科学 运动科学 运动科学
背景情况:
- 理论上,最大偏心 (MES) 和同度 (MIS) 肌肉力量是通过优化伸缩缩短周期 (SSC) 来提高垂直跳跃性能.
- 以前的研究由于评估方法的多样性和评估MES和MIS对反运动跳跃 (CMJ) 和深度跳跃 (DJ) 的贡献的有限指标,导致不清楚的结果.
研究的目的:
- 调查多关节下肢MES和MIS与CMJ和DJ期间各种地面反应力 (GRF) 测量之间的相关性.
- 为了澄清最大强度能力和垂直跳跃性能的生物力学方面之间的关系.
主要方法:
- 25名健康的成年人进行了最大努力的CMJ和DJ.
- 使用坐着的多关节异动力学动力表来评估MES和MIS.
- 采集了13个垂直GRF测量,并使用Pearson相关性 (α = 0.05) 进行分析.
主要成果:
- 在CMJ和DJ中,在MES/MIS和跳跃高度,反应强度指数 (RSI) 和修改后的RSI之间发现了中等到强的正相关性.
- 在MES/MIS和同心 (CON) 工作和峰值功率之间观察到正相关性.
- 在MES/MIS和异常 (ECC) 工作和峰值功率之间发现了负相关性.
结论:
- 增强的MES和MIS与更好的垂直跳跃性能有关,特别是在RSI和跳跃高度.
- 较强的肌肉似乎减少了异常能量吸收,提高了弹性能量用于推进的利用率.
- 这些发现凸显了最大力量在优化施加力,能量转移和SSC期间控制的重要性,以提高跳跃能力.
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