Body fat reference curves for children


McCarthy, HD; Cole, TJ; Fry, T; Jebb, SA; Prentice, AM; (2006) Body fat reference curves for children. International journal of obesity and related metabolic disorders, 30 (4). pp. 598-602. ISSN 0307-0565 DOI: https://doi.org/10.1038/sj.ijo.0803232

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Abstract

Objective: To refine the diagnosis of childhood obesity by creating new sex-specific centile curves for body fat and to base these references on a simple and affordable method that could be widely adopted in clinical practice and surveys. Design: Body fat was measured by bio-impedance in 1985 Caucasian children aged 5-18 years from schools in Southern England. Smoothed centile charts were derived using the LMS method. Results: The new body fat curves reflect the known differences in the development of adiposity between boys and girls. The curves are similar by sex until puberty but then diverge markedly, with males proportionately decreasing body fat and females continuing to gain. These sex differences are not revealed by existing curves based on body mass index. We present charts in which cutoffs to define regions of 'underfat', 'normal', 'overfat' and 'obese' are set at the 2nd, 85th and 95th centiles. These have been designed to yield similar proportions of overweight/overfat and obese children to the IOTF body mass index cutoffs. Conclusions: Direct assessment of adiposity, the component of overweight that leads to pathology, represents a significant advance over body mass index. Our new charts will be published by the Child Growth Foundation for clinical monitoring of body fat, along with the software to convert individual measurements to Z-scores.

Item Type: Article
Keywords: children, centiles, body fatness, bioelectrical impedance, Caucasian, Bioelectrical-impedance, obesity, index
Faculty and Department: Faculty of Epidemiology and Population Health > Dept of Population Health (2012- ) > Dept of Nutrition and Public Health Interventions Research (2003-2012)
Faculty of Epidemiology and Population Health > Dept of Population Health (2012- )
Research Centre: Centre for Maternal, Reproductive and Child Health (MARCH)
Centre for Global Non-Communicable Diseases (NCDs)
PubMed ID: 16570089
Web of Science ID: 236339900004
URI: http://researchonline.lshtm.ac.uk/id/eprint/12001

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