ABSTRACT
Objective To investigate the prevalence and risk factors of metabolic obesity with normal weight (MON W) in Han nationality adult population,and to identify the cut-off points of body fat percentage (％ BF) by dualenergy X-ray absorptiometry(DXA) for defining MONW.Methods Six hundred and sixty subjects (403 men and 257 women) with body mass index(BMI) ranged from 18.5 to 23.9 kg/m2 were recruited into this study.Waist circumference(WC),blood pressure (BP),BM1,and ％ BF were measured.Serum concentrations of glucose,triglycerides(TG),total cholesterol (TC),high-density lipoprotein-cholesterol (HDL-C),low-density lipoproteincholesterol(LDL-C),serum insulin,and high-sensitivity C-reactive protein (hsCRP) were tested.Those within the highest quartile in the homeostasis model assessment of insulin resistance (HOMA-IR) with a normal BM1 between 18.5 and 23.9 kg/m2 were classified as MONW.Results The prevalence of MONW was 11.34％ for men and 16.34％ for women amongst normal-weight subjects,there was no significant different between men and women in the prevalence(P＞0.05).Multivariable Logistic regression analysis showed that TG(OR =5.92,P=0.001),LDLC (OR =13.65,P =0.009),hsCRP (OR =2.09,P =0.011),WC (OR =2.35,P ＜ 0.01),％ BF (total,OR =3.65,P＜0.01) and ％ BF(abdominal,OR =26.07,P＜0.01) were the risk factors of MONW amongst men.For women,TG (OR =9.12,P＜0.01),LDL-C (OR =2.64,P =0.005),HDL-C (OR =0.020,P＜ 0.01),hsCRP (OR =2.15,P =0.039),WC (OR =1.32,P =0.045),％ BF(total,OR =1.73,P＜0.01) and ％ BF(abdominal,OR =8.43,P＜0.01) were the risk factors of MONW.The cut-off points of ％ BF for diagnosing MONW by ROC were ％ BF≥25％ for men,％ BF ≥35.0％ for women.Conclusion MONW is quite common in Han nationality adult population;.％ BF,WC,hsCRP and lipid profiles were independently associated with MONW ％ BF ≥25 ％ for men,％ BF≥35.0％ for women can be used as reference cut-off.point for diagnosing MONW.