The aim of this study of Asian Indian migrants in New Zealand was to determine cut-off points for body mass index, waist circumference, waist-to-hip ratio, and waist-to-height ratio that best discriminate for increased risk of type 2 diabetes and cardiovascular disease. One hundred and seventy-five (90F, 85M) Asian Indian volunteers (aged >50 y) were recruited from urban Auckland, New Zealand. Body weight, height and waist and hip circumferences were measured using standard techniques. Waist-to-hip ratio, waist-to-height ratio and body mass index were derived. Total and percent body fat by dual energy X-ray absorptiometry, and fasting glucose, insulin and lipids were measured. Three measures of metabolic risk were determined: the homeostasis model assessment of insulin resistance, the McAuley score for insulin sensitivity and metabolic syndrome by International Diabetes Federation criteria. Body mass index, percent body fat and anthropometric measurements of central adiposity generally did not perform well as indicators of metabolic risk in this high risk population of Asian Indian migrants. Our data support the use of lower ethnic specific body mass index and waist circumference for Asian Indian women and men. The discriminatory power of waist-to-height ratio was similar to that of body mass index. Hence, waist-to-height ratio could be used as a simple screening tool. A recommendation, of a waist-to- height ratio of less than 0.5 that would underpin the simple public health message of "your waist circumference should be less than half your height".
本研究目的在于确定新西兰亚洲印度裔移民人群的体重指数（BMI），腰围 （WC），腰臀比（WHR），和腰围身高比（WHtR）的最佳诊断界值，以甄 别该人群中2 型糖尿病和心血管疾病的高危人群。本研究从新西兰奥克兰市区 征集了170 名亚洲印度裔移民志愿者（90 名女性，85 名男性；年龄>50 岁）。体重、身高、腰围和臀围均由标准方法测量。腰臀比、腰围身高比和体 重指数由以上原始数据计算得出。采用双能X 线吸收法测量了全身体脂总含 量和体脂百分比，同时还测量了空腹血糖、胰岛素和血脂。本研究确定了三个 代谢风险诊断标准：用动态平衡模型评估胰岛素抵抗，McAuley 评分评估胰岛 素敏感性和国际糖尿病联合会的标准诊断代谢综合症。作为诊断亚洲印度裔移 民代谢综合症高危人群的指标，体重指数、体脂百分比和中心肥胖人体测量值 的总体应用价值表现并不好。我们的数据支持对亚洲印度裔的女性和男性使用 低民族特殊性的体重指数和腰围。WHtR 表现出同BMI 相当的甄别能力。因 此，WHtR 可以作为一个简单的筛选工具。“腰围身高比低于0.5”这一建议支 持简明的公共健康信息：“你的腰围应当小于你身高的一半”。