High adiposity and high body mass index-for-age in US children and adolescents overall and by race-ethnic group

被引:175
作者
Flegal, Katherine M. [1 ]
Ogden, Cynthia L.
Yanovski, Jack A. [2 ]
Freedman, David S. [3 ]
Shepherd, John A. [4 ]
Graubard, Barry I. [5 ]
Borrud, Lori G.
机构
[1] Ctr Dis Control & Prevent, Natl Ctr Hlth Stat, Hyattsville, MD 20782 USA
[2] NICHHD, Bethesda, MD 20892 USA
[3] Ctr Dis Control & Prevent, Atlanta, GA USA
[4] Univ Calif San Francisco, Dept Radiol, San Francisco, CA 94143 USA
[5] NCI, Bethesda, MD 20892 USA
关键词
CHILDHOOD OBESITY; OVERWEIGHT; FATNESS; FAT; PEDIATRICIANS; DISEASE; YOUNG;
D O I
10.3945/ajcn.2009.28589
中图分类号
R15 [营养卫生、食品卫生]; TS201 [基础科学];
学科分类号
100403 [营养与食品卫生学];
摘要
Background: Body mass index (BMI)-for-age has been recommended as a screening test for excess adiposity in children and adolescents. Objective: We quantified the performance of standard categories of BMI-for-age relative to the population prevalence of high adiposity in children and adolescents overall and by race-ethnic group in a nationally representative US population sample by using definitions of high adiposity that are consistent with expert committee recommendations. Design: Percentage body fat in 8821 children and adolescents aged 8-19 y was measured by using dual-energy X-ray absorptiometry in 1999-2004 as part of a health examination survey. Results: With the use of several different cutoffs for percentage fat to define high adiposity, most children with high BMI-for-age (>= 95th percentile of the growth charts) had high adiposity, and few children with normal BMI-for-age (<85th percentile) had high adiposity. The prevalence of high adiposity in intermediate BMI categories varied from 45% to 15% depending on the cutoff. The prevalence of a high BMI was significantly higher in non-Hispanic black girls than in non-Hispanic white girls, but the prevalence of high adiposity was not significantly different. Conclusions: Current BMI cutoffs can identify a high prevalence of high adiposity in children with high BMI-for-age and a low prevalence of high adiposity in children with normal BMI-for-age. By these adiposity measures, less than one-half of children with intermediate BMIs-for-age (85th to <95th percentile) have high adiposity. Differences in high BMI ranges between race-ethnic groups do not necessarily indicate differences in high adiposity. Am J Clin Nutr 2010; 91: 1020-6.
引用
收藏
页码:1020 / 1026
页数:7
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