AUTHOR=Bauermann Andreia , Costa e Silva Anselmo de Athayde , Figueiredo Flávia , Koury Josely Correa 

TITLE=Bioelectrical impedance vector analysis and body composition in cervical spinal cord injury: A pilot study

JOURNAL=Frontiers in Nutrition

VOLUME=Volume 9 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2022.935128

DOI=10.3389/fnut.2022.935128

ISSN=2296-861X

ABSTRACT=Introduction: Body composition assessment in cervical spinal cord injury (c-SCI) individuals is important to monitor the fat free-mass (FFM) loss, due to immobilization, or gain, due to exercise practice. Single frequency bioelectrical impedance analysis (SF-BIA) is low in cost, simple and easy. 
Objectives: The aims of this study are: to evaluate the concordance between the FFM values obtained using dual X-ray absorptiometry (DXA) and the three SF-BIA previous predictive equations; and to test the applicability of the bioelectrical impedance vector analysis (BIVA). 
Methods: Twenty-three c-SCI males were divided into two groups: physically active (PA; n=13; at least 150 minutes/week) and non-active individuals (NPA) and were assessed by DXA and SF-BIA simultaneously. Results: FFM values were similar between groups PA and NPA. Considering all participants, FFM values obtained by Kocina-Heyward (>11%) and Sun (<15.4%) predictive equations were different when compared to DXA (p<0.01). However, Buchholz's et al predictive equation showed FFM values similar to DXA, but presented poor concordance (<7%, p=0.99; concordance coefficient=0.85). BIVA showed consistency in ellipse distribution using FFM obtained using Buchholz et al predictive equation. Conclusions: The use of nonspecific BIA equations can lead to misinterpretation in FFM values in male c-SCI individuals. Predictive equations for this group need to be developed.