王迎彬+黄秀峰+林朝文+黎燕+冼敬锋+蒋昳阳

【摘要】目的探讨广西瑶族中老年人体脂的分布情况，分析脂肪率（PBF）和体重指数（BMI）的关系，为瑶族中老年人的肥胖诊断提供依据。方法随机抽取403名（男性162名，女性241名）广西瑶族健康中老年人作为研究对象，检测受试者的PBF和BMI。结果广西瑶族中老年人各年龄段女性PBF均高于男性，差异有统计学意义（P<001）；而女性BMI除45～年龄段低于男性外，其他各年龄段与男性比较差异无统计学意义（P>0.05）；男性的PBF和BMI在55岁后呈下降趋势，女性的PBF和BMI在50岁后呈下降趋势；除55～年龄段外，男性在其他年龄段PBF肥胖检出率明显低于女性（P<0.05），而男女性各年龄段的BMI肥胖检出率比较无统计学意义（P>0.05）；瑶族中老年男女以PBF和BMI判断的肥胖率存在显著相关性和明显的一致性。结论 PBF比单纯BMI更能反映人体肥胖的实际情况，能更准确地为瑶族中老年人肥胖的诊断提供依据。

【关键词】脂肪率；体重指数；瑶族；肥胖率

中图分类号：R589.2文献标识码：ADOI：10.3969/j.issn.10031383.2016.05.017

【Abstract】ObjectiveTo explore the distribution of body fat in middleaged and aged Yao people in Guangxi，analyze relation between percentage of body fat（PBF） and body mass index（BMI），so as to provide evidence for diagnosis of obesity among middleaged and aged Yao people.Methods403 healthy middleaged and aged Yao people（162 males and 241 females） were selected to this study.And their PBF and BMI were detected.ResultsThe PBF of the females in each age group was all higher than that of the males among middleaged and aged Yao people in Guangxi，difference was statistically significant（P<0.01）.However，except BMI of females aged 45 or above was lower than that of the males，difference of BMI of females and males in each age group was not statistically significant（P>0.05）.PBF and BMI of males began to decline after the age of 55，while those of the females began to decline after the age of 50.Except 55 years old or above，PBF detection rate of obesity of males in other age group was significantly lower than that of the females（P<0.05），and difference of BMI detection rate of obesity among males and females in each age group was not statistically significant（P>0.05）.Obesity rates of middleaged and aged Yao males and females which were judged by PBF and BMI have significant relation and obvious consistency.ConclusionCompared with simple BMI，PBF is a more practical way to reflect actual situation of obesity，it can provide diagnostic reference more accurately for obesity of middleaged and aged Yao people.

【Key words】PBF；BMI；Yao people；obesity rate

研究認为身体成分与许多健康问题和疾病之间都有密切的关系，如糖尿病、肥胖症、高血压、高脂血症及心血管疾病等[1～5]。由于肥胖实际是人体体脂含量过高，多数学者认为以体脂肪百分比作为衡量肥胖的标准更为客观[6～7]。但体重指数（body mass index，BMI）简单易测，与体脂有一定相关性，因而被国际广泛用于肥胖的判定。本研究通过测定广西瑶族中老年人BMI与体脂百分比的分布情况，比较两者判断肥胖的一致性以及相关关系，为我国瑶族中老年人肥胖诊断提供理论依据。

1对象与方法1.1研究对象2015年7～9月，在知情同意的情况下，运用随机抽样的调查方法，到广西百色市凌云县下甲乡弄福村、彩架村，汪甸乡六核村，沙里乡果卜村，朝里乡的北朝村；……