一种利用皮褶厚度和生物阻抗通过基于现场的三分区模型来确定体脂百分比的新方法。
A novel method of utilizing skinfolds and bioimpedance for determining body fat percentage via a field-based three-compartment model.
机构信息
Department of Kinesiology, Exercise Physiology Laboratory, The University of Alabama, Tuscaloosa, AL, USA.
Department of Curriculum and Pedagogy, Texas A&M International University, Laredo, TX, USA.
出版信息
Eur J Clin Nutr. 2018 Oct;72(10):1431-1438. doi: 10.1038/s41430-017-0060-3. Epub 2018 Jan 18.
BACKGROUND/OBJECTIVES: The purpose was to determine if skinfolds (SF) and bioelectrical impedance analysis (BIA) could provide accurate estimates of body volume (BV) and total body water (TBW), respectively, for use in a 3-compartment (3-C) model to estimate percent body fat (BF%) when compared to laboratory derived measures.
SUBJECTS/METHODS: A sample of sixty-four men (age = 22.9 ± 5.4 years) and 59 women (age = 21.6 ± 4.3 years) participated in the study. Laboratory 3-C (3C) model BF% was determined with underwater weighing for body volume (BV) and bioimpedance spectroscopy for total body water (TBW). The 3-C field (3C) estimates of BF% included BV from the 7-site SF technique and TBW from hand-to-foot BIA.
RESULTS
A significant difference in BF% (p < 0.01) was found between the 3C and 3C in the entire sample and within the men, but the effect sizes (ES) were small (0.09 and 0.17, respectively). The difference between means was not significant in the women (ES = 0.05, p = 0.332). Compared to the 3C, the total error (TE) ranged 2.2-2.4% for 3C, 5.7-5.8% for SF, and 4.0-4.6% for BIA.
CONCLUSIONS
The findings suggest that BV and TBW derived from SF and BIA, respectively, can be used in a 3C model to increase the accuracy of BF% estimates over SF and BIA alone.
背景/目的：本研究旨在确定皮褶厚度（SF）和生物电阻抗分析（BIA）是否可以分别准确估计体容积（BV）和总体水（TBW），以便在 3 compartment（3-C）模型中使用，从而与实验室衍生的测量值相比，估计体脂肪百分比（BF%）。
受试者/方法：本研究纳入了 64 名男性（年龄=22.9±5.4 岁）和 59 名女性（年龄=21.6±4.3 岁）。使用水下称重法测定实验室 3-C（3C）模型 BF%的 BV，使用生物阻抗光谱法测定 TBW。3-C 场（3C）BF%估计值包括 7 点 SF 技术的 BV 和手到脚 BIA 的 TBW。
结果
整个样本中 3C 和 3C 的 BF%存在显著差异（p<0.01），男性中也存在这种差异（ES=0.09 和 0.17），但效应量较小。女性中，两种方法之间的差异不显著（ES=0.05，p=0.332）。与 3C 相比，3C 的总误差（TE）范围为 2.2-2.4%，SF 为 5.7-5.8%，BIA 为 4.0-4.6%。
结论
研究结果表明，SF 和 BIA 分别得出的 BV 和 TBW 可用于 3C 模型，以提高 BF%估计值的准确性，优于 SF 和 BIA 单独使用。
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