%0 Journal Article %A Cameron, Noel %A Jones, Laura L. %A Griffiths, Paula %A Norris, Shane A. %A Pettifor, John M. %D 2010 %T How well do waist circumference and body mass index reflect body composition in pre-pubertal children? %U https://repository.lboro.ac.uk/articles/journal_contribution/How_well_do_waist_circumference_and_body_mass_index_reflect_body_composition_in_pre-pubertal_children_/9616190 %2 https://repository.lboro.ac.uk/ndownloader/files/17263694 %K BMI %K Waist circumference %K Fat mass %K Lean mass %K Pre-pubertal children %K Medical and Health Sciences not elsewhere classified %X Objective: To investigate the quantitative relationship between WC and height and subsequently the association between Waist Circumference Index (WCI), BMI, and body composition in pre-pubertal children. Design: Cross-sectional sample (n = 227; boys = 127) of pre-pubertal Black children (age range 8.8 to 11.0 years) from the Bone Health sub-study of the Bt20 birth cohort study set in Soweto-Johannesburg, South Africa. Measures of height, weight, and waist circumference by anthropometry, total and truncal fat and lean mass by Dual-energy X-ray Absorptiometry (DXA) were used in the analysis. Pearson’s correlation coefficients were used to examine the associations between BMI, WC, and body composition outcomes. Results: WC was independent of height when height was raised to a power of approximately 0.8. BMI and WCI (WC/Ht) were significantly associated with total and truncal fat and lean mass in both sexes (all P < 0.001). BMI demonstrated consistently and significantly higher correlations with body composition than WCI and this association was significantly greater for fat mass than lean mass. Conclusion: BMI, rather than WCI, would be a better screening tool for total and truncal fat mass in both sexes prior to puberty. %I Loughborough University