IntroductionBody composition analysis has been used to investigate alterations in the fat mass (FM) distribution and bone mineral content (BMC) in children and adolescents diagnosed with HIV . Among the methods used to evaluate body composition, bioelectrical impedance analysis (BIA) has been commonly used when the purpose is to investigate two components [FM and fat‐free mass (FFM)] or three components (body water, FM and FFM) .BIA has high reproducibility ; however, the validity of the technique compared to dual X‐ray absorptiometry (DXA), air displacement plethysmography (ADP) and isotope dilution presents different results, with great variation in correlation coefficients (CC) (0.59–0.88) . The different correlation coefficients are explained by differences in body composition estimates between the reference methods and the diversity of BIA devices that present different equations for predicting body components .Previous studies on BIA validation using single frequency equipment (50 kHz) in children and adolescents with an HIV diagnosis have found a strong correlation of FFM estimates by BIA (compared to DXA and isotope dilution) and a poor correlation (compared to DXA) . Moreover, in both studies, it was not clear whether BIA overestimated or underestimated the values predicted by DXA . Regarding FM and body fat percentage
Journal of Human Nutrition & Dietetics – Wiley
Published: Jan 1, 2018
Keywords: ; ; ; ; ;
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