title: Body Adiposity Index Performance in Estimating Body Fat Percentage in Colombian College Students: Findings from the FUPRECOL-Adults Study.
abstract: 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 (R²) between BAI, and BF%; by bioelectrical impedance analysis (BIA)). The correlation between the two methods of estimating BF% wasR² = 0.384,p< 0.001. A paired-samplet-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.
authors.affiliation: Centro de Estudios para la Medición de la Actividad Física CEMA, Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogotá 111221, Colombia. robin640@hotmail.com.
authors.forename: Robinson
authors.initials: R
authors.lastname: Ramírez-Vélez
authors.affiliation: Centro de Estudios para la Medición de la Actividad Física CEMA, Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogotá 111221, Colombia. jorge.correa@urosario.edu.co.
authors.forename: Jorge Enrique
authors.initials: JE
authors.lastname: Correa-Bautista
authors.affiliation: Grupo de Ejercicio Físico y Deportes, Vicerrectoría de Investigaciones, Universidad Manuela Beltrán, Bogotá 110231, Colombia. katherine.gonzalez@docentes.umb.edu.co.
authors.forename: Katherine
authors.initials: K
authors.lastname: González-Ruíz
authors.affiliation: Grupo de Ejercicio Físico y Deportes, Vicerrectoría de Investigaciones, Universidad Manuela Beltrán, Bogotá 110231, Colombia. jose.vivas@docentes.umb.edu.co.
authors.forename: Andrés
authors.initials: A
authors.lastname: Vivas
authors.affiliation: Grupo GICAEDS, Facultad de Cultura Física, Deporte y Recreación, Universidad Santo Tomás, Bogotá 110311, Colombia. hectortriana@usantotomas.edu.co.
authors.forename: Héctor Reynaldo
authors.initials: HR
authors.lastname: Triana-Reina
authors.affiliation: Grupo GICAEDS, Facultad de Cultura Física, Deporte y Recreación, Universidad Santo Tomás, Bogotá 110311, Colombia. javiermartinezt@usantotomas.edu.co.
authors.forename: Javier
authors.initials: J
authors.lastname: Martínez-Torres
authors.affiliation: Centro de Estudios para la Medición de la Actividad Física CEMA, Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogotá 111221, Colombia. danielprietob@gmail.com.
authors.forename: Daniel Humberto
authors.initials: DH
authors.lastname: Prieto-Benavides
authors.affiliation: Grupo GRINDER, Programa de Educación Física y Deportes, Universidad del Valle, Santiago de Cali 76001, Colombia. hugo.carrillo@correounivalle.edu.co.
authors.forename: Hugo Alejandro
authors.initials: HA
authors.lastname: Carrillo
authors.affiliation: Facultad de Educación a Distancia y Virtual, Institución Universitaria Antonio José Camacho, Santiago de Cali 760045, Colombia. jalexanderramos@admon.uniajec.edu.co.
authors.forename: Jeison Alexander
authors.initials: JA
authors.lastname: Ramos-Sepúlveda
authors.affiliation: Department of Education Sciences, University of Almería, Almería 04120, Spain. evilla@unach.edu.ec.|PROFITH "PROmoting FITness and Health through Physical Activity" Research Group, Department of Physical Education and Sport, School of Sport Sciences, University of Granada, Granada 18010, Spain. evilla@unach.edu.ec.
authors.forename: Emilio
authors.initials: E
authors.lastname: Villa-González
authors.affiliation: Laboratorio de Ciencias de la Actividad Física, el Deporte y la Salud, Universidad de Santiago de Chile, USACH, Santiago 7500618, Chile. antonio.garcia.h@usach.cl.
authors.forename: Antonio
authors.initials: A
authors.lastname: García-Hermoso
mesh_terms: D050154:Adiposity; D000293:Adolescent; D000328:Adult; D001823:Body Composition; D015992:Body Mass Index; D001835:Body Weight; D003105:Colombia / Q000453:epidemiology; D003430:Cross-Sectional Studies; D017097:Electric Impedance; D005260:Female; D006801:Humans; D016014:Linear Models; D008297:Male; D009765:Obesity / Q000453:epidemiology; D013334:Students; D055815:Young Adult
keywords: body adiposity; body composition; students; validity