Blue Malia N M, Hirsch Katie R, Brewer Gabrielle J, Cabre Hannah E, Gould Lacey M, Tinsley Grant M, Ng Bennett K, Ryan Eric D, Padua Darin, Smith-Ryan Abbie E
Department of Exercise and Sport Science, University of North Carolina, Chapel Hill, NC, USA.
Department of Geriatrics, Donald W. Reynolds Institute on Aging, Center for Translational Research in Aging & Longevity, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
Br J Nutr. 2022 Feb 3:1-11. doi: 10.1017/S0007114522000368.
Few investigations have evaluated the validity of current body composition technology among racially and ethnically diverse populations. This study assessed the validity of common body composition methods in a multi-ethnic sample stratified by race and ethnicity. One hundred and ten individuals (55 % female, age: 26·5 (sd 6·9) years) identifying as Asian, African American/Black, Caucasian/White, Hispanic, Multi-racial and Native American were enrolled. Seven body composition models (dual-energy X-ray absorptiometry (DXA), air displacement plethysmography (ADP), two bioelectrical impedance devices (BIS, IB) and three multi-compartment models) were evaluated against a four-compartment criterion model by assessing total error (TE) and standard error of the estimate. For the total sample, measures of % fat and fat-free mass (FFM) from multi-compartment models were all excellent to ideal (% fat: TE = 0·94-2·37 %; FFM: TE = 0·72-1·78 kg) compared with the criterion. % fat measures were very good to excellent for DXA, ADP and IB (TE = 2·52-2·89 %) and fairly good for BIS (TE = 4·12 %). For FFM, single device estimates were good (BIS; TE = 3·12 kg) to ideal (DXA, ADP, IB; TE = 1·21-2·15 kg). Results did not vary meaningfully between each race and ethnicity, except BIS was not valid for African American/Black, Caucasian/White and Multi-racial participants for % fat (TE = 4·3-4·9 %). The multi-compartment models evaluated can be utilised in a multi-ethnic sample and in each individual race and ethnicity to obtain highly valid results for % fat and FFM. Estimates from DXA, ADP and IB were also valid. The BIS may demonstrate greater TE for all racial and ethnic cohorts and results should be interpreted cautiously.
很少有研究评估当前身体成分技术在不同种族和族裔人群中的有效性。本研究评估了在按种族和族裔分层的多民族样本中常用身体成分方法的有效性。招募了110名自我认定为亚洲人、非裔美国人/黑人、白种人/白人、西班牙裔、多种族和美洲原住民的个体（55%为女性，年龄：26.5（标准差6.9）岁）。通过评估总误差（TE）和估计标准误差，将七种身体成分模型（双能X线吸收法（DXA）、空气置换体积描记法（ADP）、两种生物电阻抗设备（BIS、IB）和三种多室模型）与四室标准模型进行比较。对于总样本，与标准模型相比，多室模型的体脂百分比（% fat）和去脂体重（FFM）测量结果均为优秀至理想水平（% fat：TE = 0.94 - 2.37%；FFM：TE = 0.72 - 1.78 kg）。DXA、ADP和IB的% fat测量结果为非常好至优秀（TE = 2.52 - 2.89%），BIS的结果为相当好（TE = 4.12%）。对于FFM，单个设备的估计值为良好（BIS；TE = 3.12 kg）至理想水平（DXA、ADP、IB；TE = 1.21 - 2.15 kg）。除BIS对于非裔美国人/黑人、白种人/白人和多种族参与者的% fat无效（TE = 4.3 - 4.9%）外，各种族和族裔之间的结果没有显著差异。所评估的多室模型可用于多民族样本以及每个单独的种族和族裔，以获得关于% fat和FFM的高度有效结果。DXA、ADP和IB的估计值也有效。BIS在所有种族和族裔群体中可能显示出更大的TE，其结果应谨慎解释。
