测量胸腔气体体积使用Bod Pod空气位移气系统与三个预测相比
Dale R Wagner1, Edward M Heath2, Steven Spencer2
1Kinesiology & Health Science Department, Utah State University, 7000 Old Main Hill, Logan, UT, 84322-7000, USA. dale.wagner@usu.edu.
测量胸腔气体体积 (TGV) 对于使用Bod Pod.精确估计身体脂肪百分比 (%BF) 是至关重要的. 当TGV测量对运动员来说不可行时,DUCHARME预测提供了一个比CRAPO或FIELDS更好的替代方案.
科学领域:
- 运动医学 运动医学
- 人体生理学 人体生理学
- 身体组成分析 身体成分分析
背景情况:
- 波德波德空气位移囊造影是估计身体脂肪百分比 (%BF) 的标准方法.
- 使用Bod Pod精确确定身体体积需要精确量化胸部气体体积 (TGV).
- 现有的TGV预测公式可能会在%BF计算中引入偏差.
研究的目的:
- 将测量的胸腔气体体积 (TGV) 与三个预测方程进行比较:Crapo (CRAPO),Ducharme (DUCHARME) 和Fields (FIELDS).
- 评估这些TGV预测公式在年轻成人运动员中的准确性和偏差.
- 为了确定最好的预测方法,当直接TGV测量是不可能的.
主要方法:
- 121名男性和80名女性大学俱乐部体育运动员在Bod Pod中进行呼吸机动,以测量TGV.
- 测量的TGV值与来自CRAPO,DUCHARME和FIELDS公式的预测值进行了比较.
- 统计分析包括单向重复测量ANOVA,标准估计误差 (SEE) 的线性回归,以及偏差评估的Bland-Altman图.
主要成果:
- 这三种预测方程都表现出显著的偏差,超预测小型TGV和低预测大型TGV.
- 在方程 (0.63-0.66 L) 中,SEE是可比的.
- DUCHARME预测与测量TGV (0.07L) 没有显著差异,与CRAPO (-0.25L) 和FIELDS (-0.43L) 不同.
- 与CRAPO (31%) 和FIELDS (37%) 相比,DUCHARME导致较少的大错误 (≥2%BF) (25%) 发生.
结论:
- 建议对TGV进行直接测量,以确保Bod Pod评估的最佳准确性.
- 当年轻的成年运动员需要预测时,DUCHARME公式提供了比CRAPO或FIELDS更准确的TGV估计.
- DUCHARME对于高铁范围极端的运动员来说尤其有利.
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