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Optimal body fat percentage cut‐offs for obesity in C hinese adults
Author(s) -
Li Ling,
Wang Chen,
Bao Yuqian,
Peng Liangpu,
Gu Huilin,
Jia Weiping
Publication year - 2012
Publication title -
clinical and experimental pharmacology and physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 103
eISSN - 1440-1681
pISSN - 0305-1870
DOI - 10.1111/j.1440-1681.2012.05684.x
Subject(s) - bioelectrical impedance analysis , medicine , confidence interval , obesity , logistic regression , receiver operating characteristic , body mass index , diabetes mellitus , zoology , mathematics , endocrinology , biology
Summary Obesity results in an increased risk of metabolic syndrome ( M et S ) and Type 2 diabetes ( T 2 DM ). Body fat percentage ( BF %) is a common index of body composition. The aim of the present study was to determine the optimal BF % cut‐offs for obesity to predict M et S and T 2 DM in Chinese adults. The baseline study group comprised 3916 C hinese adults (age 30–70 years of age); 2033 subjects without M et S or T2 DM were followed up for a maximum of 5.5 years. The BF % was estimated using bioelectrical impedance analysis. Optimal BF % cut‐offs were analysed by receiver operating characteristic ( ROC ) curves. Binary logistic regression analysis was performed to measure the association between obesity at baseline defined by BF % and newly developed M et S and T 2 DM . Mean BF % levels were lower in men than in women (23.9 ± 6.1% vs 33.5 ± 7.1%, respectively; P < 0.01). For men, the optimal BF % cut‐offs for the prediction of M et S and T 2 DM were 25.45% and 26.65%, respectively; for women, the corresponding values were 34.95% and 36.55%. Subjects with high BF % (≥ 25% in men; ≥ 35% in women) had higher risks of incident M et S or T 2 DM than those with low BF % (< 25% in men; < 35% in women). The relative risks were 3.43 (95% confidence intervals ( CI ) 2.59–4.54) and 2.92 (95% CI 1.85–4.60), respectively. The optimal BF % cut‐offs for obesity for the prediction of M et S and T 2 DM in Chinese men and women were around 25% and 35%, respectively.