Journal article
Fat and lean BMI reference curves in children and adolescents and their utility in identifying excess adiposity compared with BMI and percentage body fat
The American journal of clinical nutrition, v 98(1), pp 49-56
01 Jul 2013
PMID: 23697708
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Background: Body mass index (BMI) and percentage body fat (% BF) are widely used to assess adiposity. These indexes fail to account for independent contributions of fat mass (FM) and lean body mass (LBM) to body weight, which vary according to age, sex, pubertal status, and population ancestry in the pediatric population.
Objective: The objective was to develop pediatric reference curves for fat mass index (FMI) and lean body mass index (LBMI) and evaluate the effects of population ancestry and LBM on measures of excess adiposity (BMI, %BF, and FMI).
Design: Sex-specific FMI and LBMI reference curves relative to age for children and adolescents aged 8-20 y were generated from cross-sectional body-composition data measured by dual-energy Xray absorptiometry from NHANES.
Results: The mean LBMI z score was higher in blacks (males: 0.26; females: 0.45) than in whites (males: -0.07; females: -0.09) and Mexican Americans (males: 0.05; females: -0.09). The positive predictive value of overweight by BMI to identify excess adiposity defined by FMI was lower in blacks (males: 35.9%; females: 30.3%) than in whites (males: 65.4%; females: 52.2%) and Mexican Americans (males: 73.3%; females: 68.3%). Participants classified as having excess adiposity by FMI but normal adiposity by %BF had significantly higher BMI, LBMI, and height z scores than did those classified as having excess adiposity by %BF but normal adiposity by FMI.
Conclusions: Relative to FMI, the prevalence of excess adiposity is overestimated by BMI in blacks and underestimated by %BF in individuals with high LBM. The use of FMI and LBMI improves on the use of %BF and BMI by allowing for the independent assessment of FM and LBM.
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Details
- Title
- Fat and lean BMI reference curves in children and adolescents and their utility in identifying excess adiposity compared with BMI and percentage body fat
- Creators
- David R. Weber - Children's Hospital of PhiladelphiaRenee H. Moore - University of PennsylvaniaMary B. Leonard - Children's Hospital of PhiladelphiaBabette S. Zemel - Children's Hospital of Philadelphia
- Publication Details
- The American journal of clinical nutrition, v 98(1), pp 49-56
- Publisher
- Oxford Univ Press
- Number of pages
- 8
- Grant note
- K12DK094723 / NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute of Diabetes & Digestive & Kidney Diseases (NIDDK) T32 DK36388 09 / NIH; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Epidemiology and Biostatistics
- Web of Science ID
- WOS:000320909200008
- Scopus ID
- 2-s2.0-84879443395
- Other Identifier
- 991021448192404721
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Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Nutrition & Dietetics