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目的了解北京市海淀区7～18岁儿童青少年皮褶厚度与肥胖的关系,为中小学生肥胖早期预防与干预提供科学依据。方法采取分层整群抽样,对北京市海淀区3所中学和2所小学7～18岁1007名儿童青少年进行皮褶厚度测量,按照WGOC推荐的中国儿童青少年超重、肥胖分类标准将人群分为正常组、超重组及肥胖组,采用均数比较、Pearson相关分析、t检验等统计学方法。结果在控制了年龄、性别影响后,7～18岁儿童青少年的腹部皮褶厚度、髂前皮褶厚度、肩胛皮褶厚度、上臂皮褶厚度与BMI呈高度正相关,偏相关系数r分别为0.736,0.761,0.817,0.684(P值均<0.01)。皮褶厚度值均为肥胖组>超重组>正常体重组,差异均有统计学意义(P值均<0.05)。结论海淀区7～18岁儿童青少年皮褶厚度均值在7～9和10～12岁突增,从10～12岁以后男女皮褶厚度增长幅度逐年递减。肥胖组与正常组的皮褶厚度值差异均有统计学意义。
Objective To understand the relationship between juvenile skinfold thickness and obesity in Haidian District, Beijing, and to provide a scientific basis for the early prevention and intervention of obesity in primary and middle school students. Methods Stratified cluster sampling was used to measure the skinfold thickness of 3 middle schools in Haidian District of Beijing and 1007 children and adolescents aged from 7 to 18 in two elementary schools in Beijing. According to the classification criteria of overweight and obesity in Chinese children and adolescents recommended by WGOC, the population was divided into Normal group, overweight group and obesity group were compared by means of statistics, Pearson correlation analysis, t test and other statistical methods. Results After controlling for age and sex, the abdomen skinfold thickness, anterior fossa thickness, scapular skinfold thickness and the thickness of upper arm skinfold were positively correlated with BMI in children aged 7-18 years. The partial correlation coefficients r were 0.736, 0.761, 0.817, 0.684 (all P <0.01). Skinfold thickness values were obese group> overweight group> normal weight group, the differences were statistically significant (P <0.05). Conclusions The average skinfold thickness of adolescents aged 7 to 18 in Haidian District increased suddenly from 7 to 9 and from 10 to 12 years old. From 10 to 12 years old, the increase of skinfold thickness of adolescent decreased gradually. There was significant difference in skinfold thickness between obesity group and normal group.