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在业余跑步者中量化跑步经济:通过基于模型的规范化评估VO2和能源成本
Jay Lee1,2, Xiuli Zhang2, Zhaowei Kong1
1Faculty of Education, University of Macau, Macao, China.
Journal of sports science & medicine
|September 11, 2025
概括
对于运行经济 (RE) 的比例缩放是有问题的. 对于正常化亚最大氧摄取量 (VO2sub) 和能量成本 (Ec) 来说,全尺度缩放优越,揭示女性具有更好的RE,并突出显示65%的VO2max作为最佳测试强度.
科学领域:
- 运动生理学 运动生理学
- 运动科学 运动科学 运动科学
- 人类的新陈代谢.
背景情况:
- 按比例缩放的亚最大氧吸收 (VO2sub) 是评估运行经济 (RE) 的常见但有疑问的方法.
- 比率缩放忽视了基质问题,并存在数学差异,质疑其用于比较代谢成本的有效性.
- 全米缩放提供了一种可能更准确的方法来规范能源支出数据.
研究的目的:
- 通过将其与全米缩放的能源成本 (Ec) 进行比较,研究比例缩放的VO2sub用于测量RE的有效性.
- 为了确定最合适的缩放方法 (比率与全度) 在RE评估中规范化代谢数据.
- 为了确定最佳的亚最大强度,并评估RE的性别差异.
主要方法:
- 69名大学生进行了VO2max测试,并在3%的VO2max强度下进行了不连续的亚最大跑步.
- 通过1000米测试来评估跑步表现.
- 统计分析包括ANOVA,回归,皮尔森相关性和基于大小的推断,以比较VO2sub和Ec,评估标准化的有效性和评估性能相关性.
主要成果:
- 随着跑步强度的增加,VO2sub和Ec都显著增加,这证实了VO2sub在RE量化中的有效性.
- 在消除体重对Ec和VO2亚体的影响方面,全度量缩放比比率缩放更有效.
- 女人表现出更好的RE,而全度尺度的Ec显示出更强的相关性与65%VO2max的表现.
结论:
- 建议在比率缩放上使用全度量缩放来规范化RE量化,以实现可靠的个人间比较.
- 通过2/3定律,可以近似测量体重的指数"b".
- 65%的VO2max被建议作为亚最大RE测试的最佳强度,尽管需要进一步验证.
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