Relative fat mass is a better tool to diagnose high adiposity when compared to body mass index in young male adults: A cross-section study
Relative fat mass is a better tool to diagnose high adiposity when compared to body mass index in young male adults: A cross-section study
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DOI：
10.1016/j.clnesp.2020.12.009
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发表时间：
2021-01-21
影响因子：
3
通讯作者：
Nunes, Everson Araujo
中科院分区：
文献类型：
--
作者：
Correa, Cinthia Rejane;Formolo, Natalia Paludo Silveira;Nunes, Everson Araujo
背景与目的：相对脂肪质量(RFM)是一种利用人体测量学的线性方程估算成人全身脂肪百分比的新方法。目的：通过双X射线吸收法(DXA)或生物电阻抗法(BIA)评价青年男性体脂(BF)与RFM之间的关系。方法：对81名青年男性进行BF脂肪、游离脂肪质量(BIA和DXA)、腰围的评估。然后，根据从受试者收集的数据计算BMI和RFM。用皮尔逊相关系数和Kappa指数评价BMI与RFM或BIA/DXA的一致性。结果：综合分析，RFM与DXA(rDXA=0.90)、RFM与BIA(rBIA=0.88)的相关性略高于BMI与DXA(rDXA=0.79)或BMI与BIA(rBIA：0.82)的相关性。BF分析显示，低BF个体与RFM(rDXA=0.58；rBIA=0.73)的相关性远高于BMI(rDXA=0.24；rBIA：0.46)。然而，当比较RFM(rDXA=0.80；rBIA=0.64)和BMI(rDXA=0.78；rBIA=0.64)时，BF(EBF)过多的受试者表现出类似的相关性。总体而言，RFM与DXA和BIA的一致性(kDXA=0.75；KBIA=0.67)高于BMI(kDXA=0.63；KBIA=0.60)。多元线性回归分析显示，RFM与DXA或RFM与BIA有较高的相关性(r2DXA=0.85；r2BIA=0.81)。结论：在青年男性中，RFM与DXA和BIA测量的BF有良好的相关性和关联性。此外，与BMI相比，在LBF个体中，RFM似乎与BF有更好的相关性。因此，进一步研究将RFM作为评估BF和肥胖的工具是有动力的。(C)2020年欧洲临床营养和代谢学会。爱思唯尔有限公司出版。保留所有权利。
Background and aim: Relative fat mass (RFM) is a new method to estimate whole-body fat percentage in adults using an anthropometric linear equation. We aimed to assess the association between RFM and body fat (BF), evaluated by dual x-ray absorptiometry (DXA) or bioelectrical impedance (BIA), in young male adults.Methods: Eighty-one young males were assessed for BF fat and free fat mass (by BIA and DXA), waist circumference. BMI and RFM were then calculated from data collected from the subjects. The agreement between BMI and RFM or BIA/DXA was assessed by Pearson's Correlation and Kappa index. Univariate and multivariate linear regression were applied.Results: Analyzing all the participants together, the correlation between RFM and DXA (rDXA = 0.90) or RFM and BIA (rBIA = 0.88) were slightly higher than the correlation between BMI and DXA (rDXA = 0.79) or BMI and BIA (rBIA: 0.82). When analyzed by BF, low BF (LBF) individuals showed a much higher correlation with RFM (rDXA = 0.58; rBIA = 0.73) than BMI (rDXA = 0.24; rBIA: 0.46). However, subjects with excess BF (EBF) presented similar correlations when comparing RFM (rDXA = 0.80; rBIA = 0.64) and BMI (rDXA = 0.78; rBIA = 0.64). In general, RFM presented a higher strength of agreement with DXA and BIA (kDXA = 0.75; kBIA = 0.67) than BMI (kDXA = 0.63; kBIA = 0.60). Multivariable linear regression also revealed high associations between RFM and DXA or RFM and BIA (r2DXA = 0.85; r2BIA = 0.81).Conclusion: Our findings suggest that RFM shows a good correlation and association with BF measured by DXA and BIA in young male adults. Furthermore, RFM seems to be better correlated to BF in LBF individuals when compared to BMI. Therefore, further studies investigating RFM as a tool to assess BF and obesity are motivated. (C) 2020 European Society for Clinical Nutrition and Metabolism. Published by Elsevier Ltd. All rights reserved.