| 张倩,杜维婧,胡小琪,刘爱玲,潘慧,马冠生.北京市儿童少年体重指数与体脂百分比关系的分析[J].Chinese journal of Epidemiology,2004,25(2):113-116 |
| 北京市儿童少年体重指数与体脂百分比关系的分析 |
| The relation between body mass index and percentage body fat among Chinese adolescent living in urban Beijing |
| Received:December 12, 2003 |
| DOI： |
| KeyWord: 体重指数 体脂，百分比 儿童 |
| English Key Word: Body mass index Body fat percentage Adolescent |
| FundProject: |
| Author Name | Affiliation | | ZHANG Qian | The Institute for Nutrition and Food Safety, Chinese Center for Disease Control and Prevention, Beijing 100050, China | | DU Weijing | The Institute for Nutrition and Food Safety, Chinese Center for Disease Control and Prevention, Beijing 100050, China | | HU Xiao-qi | The Institute for Nutrition and Food Safety, Chinese Center for Disease Control and Prevention, Beijing 100050, China | | LIU Ai-ling | The Institute for Nutrition and Food Safety, Chinese Center for Disease Control and Prevention, Beijing 100050, China | | PAN Hui | The Institute for Nutrition and Food Safety, Chinese Center for Disease Control and Prevention, Beijing 100050, China | | MA Guan-sheng | The Institute for Nutrition and Food Safety, Chinese Center for Disease Control and Prevention, Beijing 100050, China |
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| Abstract: |
| 目的 分析北京市儿童少年体重指数(BMI)和体脂百分比(PBF)的关系并比较两者判定肥胖的一致性。方法 抽取北京城区757名女生(平均10.1岁),郊区165名女生(平均13.5岁)和郊区172名男生(平均13.7岁),用双能X线吸收仪测定体成分,并计算BMI。结果 北京市城区女生、郊区女生和男生在各年龄段BMI与PBF呈中、高度相关,r=0.59～0.83。与PBF判定的肥胖(男生:PBF≥25％,女生:PBF≥35％)相比,国际肥胖工作小组(IOTF)提出的分年龄、性别BMI切点判定肥胖时有较高的特异度,达100％,而灵敏度较差,只有7.3％～18.9％。结论 北京市儿童少年BMI和PBF呈中高度相关,IOTF提出的分年龄、性别的BMI切点对于确定中国儿童高体脂水平具有较高特异性,适合儿童肥胖的判定,而不适用于儿童肥胖的筛查。 |
| English Abstract: |
| Objective To study the relation between body mass index (BMI) and percentage body fat (PBF) in Chinese adolescent, and to compare the prevalence of overweight and obesity using BMI or PBF standards. Methods BMI from 757 girls with an average aged of 10. 1 years in the rural areas, 165 girls average aged 13. 5 years in suburbs and 172 boys average aged 13. 7 years in suburb of Beijing, were measured. Their body compositions were also measured by dual--energy X--ray absorptiometry (DEXA). Results BMI was found closely correlated with PBF in each age group of rural and suburb girls and suburb boys with the correlation coeffcient (r) Of 0. 59-0. 83. When age, height and pubertal development were controled, r became 0. 54--0. 88. The prevalence rates of obesity in rural girls, suburb girls and subur boys were 33. 1 %, 21. 8% and 21. 5%, When PBF cutoff values (girls: PBF≥35%, boys: PBF≥25%) were used. However, the rates became 2. 4 %, 3. 0 % and 4. 0 % when BMI cutoff values of International Obesity Task Force (IOTF) were used. Compared with PBF cutoff values for obesity, the IOTF recommended BMI cutoff values had relatively lower sensitivity (7. 3%-18. 9%) and higher specificity (100%). Conclusion BMI correlated well with PBF in Beijing adolescent. IOTF--BMI cutoff values showed low sensitivity and high specificity to Chinese adolescent which might be suitable for identifying obesity but not for the purpose of screening. |
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