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Type: Artigo
Title: Concordance between whole- and half-body scans to evaluate body composition in dual-energy X-ray absorptiometry in children and adolescents with different nutritional and pubertal conditions
Author: Ferreira, Mariana Simoes
Marson, Fernando Augusto Lima
Wolf, Vaneza Lira Waldow
Silva, Marcos Tadeu Nolasco da
Zambon, Mariana Porto
Antonio, Maria Angela Reis de Goes Monteiro
Ribeiro, Jose Dirceu
Mendes, Roberto Teixeira
Abstract: Evaluation of body composition is a relevant clinical instrument for the follow-up assessments of children and adolescents, and dual-energy X-ray absorptiometry (DXA) is an accurate method for the pediatric population. However, DXA has limited scan area for the obese population. Thus, half-body scans emerged as an alternative to evaluate individuals with obesity. The aim of this study was to compare the body composition of children and adolescents with whole- and half-body DXA scans, considering nutritional status, pubertal development, sex, and age. Methods: This was a cross-sectional, analytical, and diagnostic intervention study with a sample of 82 participants of both sexes between 4 and 20 y of age. Body composition was evaluated by DXA using an iDXA bone densitometer (GE Healthcare Lunar, Madison, WI, USA). Two evaluations were performed: whole-body and half-body scans. The Bland-Altman correlation and linear regression tests were applied to identify the presence of association bias between the techniques. alpha = 0.05 was set. Results: Of the 82 participants, 20 were excluded. A high correlation was observed between the data (correlation coefficient similar to 0.999). Bland-Altman plots and regression analyses demonstrated correlation and randomness bias between whole- and half-body scan techniques in obese or normal weight participants for all DXA markers. Conclusions: The use of half-body scans was feasible and accurate to evaluate whole-body composition. The difference bias between techniques occurred randomly and was clinically irrelevant. A high correlation was observed between half- and whole-body analysis techniques
Subject: Obesidade pediátrica
Country: Estados Unidos
Editor: Elsevier
Rights: Fechado
Identifier DOI: 10.1016/j.nut.2019.03.018
Date Issue: 2019
Appears in Collections:FCM - Artigos e Outros Documentos

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