计算动力强度指数的不同方法之间的比较:对训练建议的影响
Nicholas Joel Ripley1, Jack Fahey1, Stuart Guppy2
1School of Health and Society, University of Salford, Salford, United Kingdom.
PloS one
|September 18, 2025
概括
基于固定持续时间的冲动动态强度指数 (iDSI) 与基于峰值强度的DSI (fDSI) 或持续时间匹配的iDSI相比,提供了更一致的训练建议. 这种固定的iDSI方法是随着时间的推移跟踪运动员的身体表现的首选.
科学领域:
- 运动科学 运动科学 运动科学
- 生物力学 生物力学
- 人类运动分析 人类运动分析
背景情况:
- 基于冲动的动力强度指数 (iDSI) 考虑了依赖时间的力表达,可能为训练建议提供比传统的基于峰值力的DSI (fDSI) 更大的洞察力.
- iDSI的一个限制是它对反运动跳跃 (CMJ) 推进阶段持续时间的变化敏感,这可能会使纵向比较复杂化.
- 一个固定持续时间的iDSI (例如250 ms) 可以克服与可变推进持续时间相关的纵向比较限制.
研究的目的:
- 调查不同动力强度指数 (DSI) 计算方法 (fDSI,iDSI匹配,iDSI固定) 对DSI值的影响.
- 确定这些计算方法如何影响运动员训练优先级的结果.
- 为了比较从每个DSI计算方法中得出的培训建议的一致性.
主要方法:
- 三十七名团队运动运动员在力量板上进行了最大努力的反运动跳跃 (CMJ) 和对称的中腿拉动 (IMTP).
- fDSI是根据峰值力计算的.
- 固定iDSI是使用IMTP的初始250 ms计算的.
- 匹配的iDSI使用与CMJ推进阶段匹配的持续时间来计算.
- 培训建议根据DSI值 (>0.80,0.60-0.80,<0.60) 进行分类.
主要成果:
- 固定iDSI值 (0.88 ± 0.11) 显著和有意义地高于fDSI (0.82 ± 0.12) 和匹配的iDSI (0.82 ± 0.11).
- 在fDSI和匹配的iDSI之间没有显著差异.
- 固定iDSI和匹配iDSI (84.2%) 与fDSI和匹配iDSI (44.7%) 或fDSI和固定iDSI (55.3%) 之间的培训建议一致性更高.
结论:
- 各种iDSI计算方法之间存在显著差异,影响了培训建议.
- 固定时间的iDSI提供了更一致的训练建议,并且可能更适合纵向跟踪身体表现.
- 选择DSI计算方法显著影响运动员的评估和训练处方.
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