淮安市市区成人体脂百分比与BMI关系初探

Relationship between body fat percentage and body mass index of Huai'an

目的调查淮安市区部分成人体脂成分现状,了解体重指数(BMI)与体脂百分比(F%)之间的关系。方法对1700名成人进行体格测量,应用生物电阻抗技术对体重、腰臀比、F%、BMI、内脏脂肪面积分布进行描述,部分指标与上海、太原和日本东京成人指标进行比较,重新确定研究对象的肥胖诊断切点。结果随年龄增长,BMI和F%均呈现逐年增长的趋势,但两者之间存在不均衡性;淮安市成人与上海、太原、日本东京的BMI、F%分布相近,但20～30岁男性在BMI,50～60岁女性在F%均与其他地区存在统计学差异;研究对象中男性、女性内脏脂肪分布呈逐年增长趋势,而男性达到50%内脏型肥胖的情况比女性提前10年左右;重新确定肥胖的切点显示男性BMI为24.625kg/m2,女性为22.505kg/m2;对研究对象F%的预测:F%(男性)=腰臀比×233.241-BMI×0.673-年龄×0.297-156.3;R2=0.881;F%(女性)=腰臀比×43.388+BMI×0.928-年龄×0.083-25.43;R2=0.616。结论 BMI与F%对肥胖的判定存在不均衡性,BMI的肥胖诊断切点可随慢性病预防的需要适当调整。

Objective To survey the actuality of body composition for adults in Huai'an and know the relationship between body fat percentage and body mass index (BMI).Methods A total of 1700 health adults were enrolled in this study.It was measured by bioelectrical impedance for weight,WHR,F%,BMI,visceral fat area,in comparison with the part index of adult in Shanghai,Taiyuan and Tokyo.The obesity diagnosis outpoint was determined for the research object.Results Along with the age,BMI and F% were significantly increased year by year trend,but not balanced.The adult index of BMI or F% in Huai'an was similar to the distribution of Shanghai,Taiyuan and Tokyo,however,there were significant differences between that BMI of 20-30 years old male and F% of 50-60 years old female.As the growth of the age,the visceral fat area distribution was increasing.Men achieve 50% visceral type obesity than women about ten years earlier.The again obese outpoint of male in Huai'an was 24.625 kg/m2,and female was 22.505 kg/m2.Regression equations showed that:F%(male)=WHR×233.241-BMI×0.673-year×0.297-156.3;F%(female)=WHR×43.388+BMI×0.928-year×0.083-25.43.Conclusions There is malconformation between BMI and F%.Along with chronic disease prevention,the outpoint of obese diagnosis should be properly adjusted.