Department of Endocrinology and Thyroid Research Centre, Institute of Nuclear Medicine & Allied Sciences, New Delhi, India.
Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, New Delhi, India.
J Clin Densitom. 2014 Jan-Mar;17(1):136-42. doi: 10.1016/j.jocd.2013.01.002. Epub 2013 Mar 27.
Dual-energy X-ray absorptiometry (DXA) assessment of body fat mass is precise and highly correlated with under water weighing. In view of ethnic differences, we undertook this study to prepare normative data for body fat mass in apparently healthy adult Indians and correlate it with body mass index (BMI). This cross-sectional population-based study included 2347 subjects (male: 924; female: 1423) aged >20 yr who participated in a general health examination. They were evaluated for anthropometry and body fat mass by DXA. All subjects were categorized as overweight and obese based on standard BMI criteria. Mean age and BMI were 49.1 ± 18.2yr and 25.0 ± 4.7kg/m(2), respectively. Mean percent total and regional fat (trunk, arm, and leg) reached maximum in the age group of 30-40yr in males and 50-60yr in females. Females had significantly higher total and regional fat mass compared with males. Fat mass was positively correlated with age (r = 0.224; p < 0.00001) and BMI (r = 0.668; p < 0.00001). Prevalence of overweight and obesity was seen in 2119 (46.1%) and 536 (13.8%), respectively, according to World Health Organization definition and 64.0% and 31.1%, respectively, as per Indian guidelines. Percent total body fat mass (PTBFM) of 25% in males and 30% in females corresponds to BMI of 22.0kg/m(2) with sensitivity of >80% and specificity of >70% in receiver operating characteristic curve analysis. Body fat mass in Indians is higher than that in Western populations for a given age and BMI. PTBFM of 25% in males and 30% in females corresponds to BMI of 22kg/m(2) in Indians.
双能 X 射线吸收法（DXA）评估体脂肪量精确且与水下称重高度相关。鉴于种族差异，我们进行了这项研究，为印度成年健康人群的体脂肪量制定了参考标准，并将其与体重指数（BMI）相关联。这项基于人群的横断面研究纳入了 2347 名年龄大于 20 岁的参与者（男性 924 名，女性 1423 名），他们参加了一般健康检查。通过 DXA 对他们的人体测量学和体脂肪量进行了评估。所有参与者都根据标准 BMI 标准被归类为超重和肥胖。平均年龄和 BMI 分别为 49.1 ± 18.2 岁和 25.0 ± 4.7kg/m2。男性体脂肪的总含量和各部位（躯干、手臂和腿部）含量在 30-40 岁年龄组达到最大值，女性则在 50-60 岁年龄组达到最大值。女性的体脂肪总含量和各部位含量均显著高于男性。脂肪量与年龄（r = 0.224；p < 0.00001）和 BMI（r = 0.668；p < 0.00001）呈正相关。根据世界卫生组织的定义，超重和肥胖的患病率分别为 2119 例（46.1%）和 536 例（13.8%），而根据印度指南，超重和肥胖的患病率分别为 64.0%和 31.1%。男性体脂肪总量百分比（PTBFM）为 25%，女性为 30%，相当于 BMI 为 22.0kg/m2，其在受试者工作特征曲线分析中的敏感性大于 80%，特异性大于 70%。对于给定的年龄和 BMI，印度人的体脂肪量高于西方人群。男性的 PTBFM 为 25%，女性为 30%，相当于印度人的 BMI 为 22kg/m2。
