广州市不同年龄儿童青少年体脂含量检测结果分析

目的了解不同年龄儿童青少年体脂情况,为制定我国儿童青少年肥胖诊断标准提供依据。方法选定广州市本地生源为主的中、小学各1所,采用生物电阻抗法(BIA)对1305名7~18岁儿童青少年进行体脂含量测定。结果男生体脂百分比(BF%)7岁组为13.2%,8~18岁基本稳定在15%左右,没有随年龄而上升;女生BF%7岁组较低,为12.2%,以后逐渐升高,在10~11岁与男生形成交叉并超越男生。男女生的BF%与BMI相关分析r值分别为0.722和0.954,P值均小于0.001。结论BF%可作为儿童青少年的肥胖诊断标准,但在不同性别和年龄中变化较大,应根据我国人种特点进行大样本的基础调查。

Body Fat Assessment of 1 305 Children and Adolescents of Different Ages in Guangzhou

Objective To assess the body fat content of children and adolescents of different ages, and to provide evidence for diagnosis standard of children's obesity. Methods From a elementary school and a secondary school, a total of 1 305 students were chosen and tested with bioelectrical impedance analysis (BIA) for body fat content. Results The percentage of body fat was 13.2% in 7 years old group and stayed about 15% in 8-18 years group. Female students had a relatively low BF%(12.2%) in 7 years old group but rose with ages and exceeded male students after 10 years old. Significant positive correlations were found between BF% and BMI in male(r=0.722,P<0.001) and female(r=0.954,P<0.001) groups. Conclusion BF% could be taken as a criterion for obesity diagnose in children and adolescent but it vary remarkably among different genders and ages.