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Body Adiposity Index Performance in Estimating Body Fat Percentage in Colombian College Students: Findings from the FUPRECOL—Adults Study

Recently, a body adiposity index (BAI = (hip circumference)/((height)(1.5))(−18)) was developed and validated in adult populations. The aim of this study was to evaluate the performance of BAI in estimating percentage body fat (BF%) in a sample of Colombian collegiate young adults. The participants...

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Detalles Bibliográficos
Autores principales: Ramírez-Vélez, Robinson, Correa-Bautista, Jorge Enrique, González-Ruíz, Katherine, Vivas, Andrés, Triana-Reina, Héctor Reynaldo, Martínez-Torres, Javier, Prieto-Benavides, Daniel Humberto, Carrillo, Hugo Alejandro, Ramos-Sepúlveda, Jeison Alexander, Villa-González, Emilio, García-Hermoso, Antonio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5295084/
https://www.ncbi.nlm.nih.gov/pubmed/28106719
http://dx.doi.org/10.3390/nu9010040
Descripción
Sumario:Recently, a body adiposity index (BAI = (hip circumference)/((height)(1.5))(−18)) was developed and validated in adult populations. The aim of this study was to evaluate the performance of BAI in estimating percentage body fat (BF%) in a sample of Colombian collegiate young adults. The participants were comprised of 903 volunteers (52% females, mean age = 21.4 years ± 3.3). We used the Lin’s concordance correlation coefficient, linear regression, Bland–Altman’s agreement analysis, concordance correlation coefficient (ρc) and the coefficient of determination (R(2)) between BAI, and BF%; by bioelectrical impedance analysis (BIA)). The correlation between the two methods of estimating BF% was R(2) = 0.384, p < 0.001. A paired-sample t-test showed a difference between the methods (BIA BF% = 16.2 ± 3.1, BAI BF% = 30.0 ± 5.4%; p < 0.001). For BIA, bias value was 6.0 ± 6.2 BF% (95% confidence interval (CI) = −6.0 to 18.2), indicating that the BAI method overestimated BF% relative to the reference method. Lin’s concordance correlation coefficient was poor (ρc = 0.014, 95% CI = −0.124 to 0.135; p = 0.414). In Colombian college students, there was poor agreement between BAI- and BIA-based estimates of BF%, and so BAI is not accurate in people with low or high body fat percentage levels.