Measurement of body composition in 8-10-year-old African-American girls: a comparison of dual-energy X-ray absorptiometry and foot-to-foot bioimpedance methods

International Journal of Pediatric Obesity : IJPO : an Official Journal of the International Association for the Study of Obesity
Barbara S McClanahanLeslie P Schilling

Abstract

The purpose of this study was to evaluate body composition outcomes of foot-to-foot (FF) bioelectrical impedance (BIA) and dual-energy x-ray (DEXA) in 8 to 10-year-old African-American girls and, if different, to develop and cross-validate specific BIA prediction equations for this at-risk group. DEXA and FF-BIA body composition outcomes were analyzed in 183, 8-10-year-old African-American girls from the Memphis site of the Girls health Enrichment Multi-site Study (GEMS). Mean body composition outcomes by FF-BIA and DEXA were significantly different (p<0.0001); therefore, population-specific equations were developed and cross-validated using split-sample, cross-validation methods. When equations were used, BIA and DEXA outcomes were significantly correlated (percent body fat [r=0.931], fat mass [r=0.985], and fat-free mass [r=0.944]). Mean predicted BIA measurements for body fat, fat mass, and fat-free mass were essentially equal to their counterpart DEXA measurements (t[182]=- 0.013, p = 0.897, t[182]=- 0.06, p=0.956, and t[182]=- 0.26, p=0.792, respectively). The Bland-Altman analysis revealed a significant slope for percent fat (p=0.009) and slopes approaching significance for fat mass (p=0.07) and fat-free mass (p=0.06). Al...Continue Reading

Citations

Jul 14, 2011·International Journal of Pediatric Obesity : IJPO : an Official Journal of the International Association for the Study of Obesity·Katie A MeyerDianne Neumark-Sztainer
Apr 2, 2014·Journal of Human Nutrition and Dietetics : the Official Journal of the British Dietetic Association·F D AlvesN Clausell
Aug 31, 2011·Revista latino-americana de enfermagem·Jose Maria MoranJuan Diego Pedrera-Zamorano
Jun 26, 2018·Scandinavian Journal of Medicine & Science in Sports·Young-Gyun SeoKyung Hee Park
Jul 16, 2013·Obesity Reviews : an Official Journal of the International Association for the Study of Obesity·H TalmaT M Altenburg
Jan 24, 2017·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Megumi OhtaHiroaki Kanehisa
Apr 22, 2021·BMC Pediatrics·Francisco Sánchez FerrerAna Pilar Nso Roca

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