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Body Composition Assessment in Mexican Children and Adolescents. Part 2: Cross-Validation of Three Bio-Electrical Impedance Methods against Dual X-ray Absorptiometry for Total-Body and Regional Body Composition

Authors :
Desiree Lopez-Gonzalez
Jonathan C. K. Wells
Patricia Clark
Source :
Nutrients, Vol 14, Iss 5, p 965 (2022)
Publication Year :
2022
Publisher :
MDPI AG, 2022.

Abstract

The aim of our study was to validate three different bioelectrical impedance analysis (BIA) methods for estimating body composition (BC). First, we generated BIA prediction equations based on the 4-C model as the reference method for fat mass (FM) and fat-free mass (FFM), and on dual X-ray absorptiometry (DXA) estimations of appendicular lean mass (ALM) and truncal fat mass (tFM). Then, we performed cross-validation in an independent BMI-, sex-, and Tanner-stratified sample of 450 children/adolescents. The three BIA methods showed good correlation and concordance with DXA BC estimations. However, agreement analyses showed significant biases, with increasing subestimations of FM and tFM, and overestimations of ALM, by all three BIA methods. In conclusion, the three BIA methods analysed in this study, provide valid estimations of BC for total body and body segments, in children and adolescents who are of a healthy weight, overweight, or obese. It should be noted that this validation cannot be extrapolated to other BIA methods.

Details

Language :
English
ISSN :
20726643
Volume :
14
Issue :
5
Database :
Directory of Open Access Journals
Journal :
Nutrients
Publication Type :
Academic Journal
Accession number :
edsdoj.86a0652a731d427a82cc31dfa953fbc3
Document Type :
article
Full Text :
https://doi.org/10.3390/nu14050965