1. The development and validation of new equations for estimating body fat percentage among Chinese men and women.
- Author
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Liu, Xin, Sun, Qi, Sun, Liang, Zong, Geng, Lu, Ling, Liu, Gang, Rosner, Bernard, Ye, Xingwang, Li, Huaixing, and Lin, Xu
- Subjects
BODY composition ,ADIPOSE tissues ,AGE distribution ,BLOOD pressure ,BLOOD sugar ,CONFIDENCE intervals ,STATISTICAL correlation ,INTERVIEWING ,LONGITUDINAL method ,MATHEMATICS ,RESEARCH methodology ,TYPE 2 diabetes ,PROBABILITY theory ,QUESTIONNAIRES ,REGRESSION analysis ,RESEARCH funding ,SEX distribution ,BODY mass index ,DISEASE incidence ,WAIST-hip ratio ,DATA analysis software ,WAIST circumference ,PHOTON absorptiometry - Abstract
Equations based on simple anthropometric measurements to predict body fat percentage (BF%) are lacking in Chinese population with increasing prevalence of obesity and related abnormalities. We aimed to develop and validate BF% equations in two independent population-based samples of Chinese men and women. The equations were developed among 960 Chinese Hans living in Shanghai (age 46·2 (sd 5·3) years; 36·7 % male) using a stepwise linear regression and were subsequently validated in 1150 Shanghai residents (58·7 (sd 6·0) years; 41·7 % male; 99 % Chinese Hans, 1 % Chinese minorities). The associations of equation-derived BF% with changes of 6-year cardiometabolic outcomes and incident type 2 diabetes (T2D) were evaluated in a sub-cohort of 780 Chinese, compared with BF% measured by dual-energy X-ray absorptiometry (DXA; BF%-DXA). Sex-specific equations were established with age, BMI and waist circumference as independent variables. The BF% calculated using new sex-specific equations (BF%-CSS) were in reasonable agreement with BF%-DXA (mean difference: 0·08 (2 sd 6·64) %, P= 0·606 in men; 0·45 (2 sd 6·88) %, P< 0·001 in women). In multivariate-adjusted models, the BF%-CSS and BF%-DXA showed comparable associations with 6-year changes in TAG, HDL-cholesterol, diastolic blood pressure, C-reactive protein and uric acid (P for comparisons ≥ 0·05). Meanwhile, the BF%-CSS and BF%-DXA had comparable areas under the receiver operating characteristic curves for associations with incident T2D (men P= 0·327; women P= 0·159). The BF% equations might be used as surrogates for DXA to estimate BF% among adult Chinese. More studies are needed to evaluate the application of our equations in different populations. [ABSTRACT FROM PUBLISHER]
- Published
- 2015
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