Development of an equation to estimate fat-free mass in mountain Guides and Porters.

Jorge Torres-Mejías; Evangelina Rivarola; Erick DIAZ; Gabriela SALAZAR; DanielaANIELA TORO; Felipe VILLEGAS; Rossana Gómez; Marco COSSIO; Miguel Angel LÓPEZ; Eugenio MERELLANO-NAVARRO

doi:10.12873/443cavalcante

Autores/as

Jorge Torres-Mejías Programa Doctorado en Ciencias de la Actividad Física, Facultad de Ciencias de la Educación, Universidad Católica del Maule, Chile https://orcid.org/0000-0002-6463-5051
Evangelina Rivarola Escuela de Nutrición. Facultad de Ciencias Médicas. Universidad Nacional de Córdoba. Argentina
Erick DIAZ Laboratory of Energy Metabolism and Stable Isotopes, INTA, U. of Chile;
Gabriela SALAZAR Laboratory of Energy Metabolism and Stable Isotopes, INTA, U. of Chile;
Daniela TORO Andesgear, Chile
Felipe VILLEGAS
Rossana Gómez Department of Physical Activity Sciences, Faculty of Education Sciences, Universidad Católica del Maule, Talca 3530000, Chile
Marco COSSIO Department of Physical Activity Sciences, Faculty of Education Sciences, Universidad Católica del Maule, Talca 3530000, Chile https://orcid.org/0000-0001-7230-9996
Miguel Angel LÓPEZ Nutrición y Dietética. Facultad de Ciencias de la Salud, Universidad Adventista de Chile, Chillán, Chile. https://orcid.org/0000-0001-7865-634X
Eugenio MERELLANO-NAVARRO Department of Physical Activity Sciences, Faculty of Education Sciences, Universidad Católica del Maule, Talca 3530000, Chile; https://orcid.org/0000-0002-1557-2285

DOI:

https://doi.org/10.12873/443cavalcante

Palabras clave:

composición corporal, Masa libre de grasa, Índice de Masa Corporal, hipoxia hipobárica, Altitud

Resumen

Resumen: La composición corporal (CC) es un componente crucial en el seguimiento de los deportistas, no sólo como variable relacionada con el rendimiento físico, sino también como seguimiento de la intervención dietética y del entrenamiento. Objetivo: Proponer ecuaciones de regresión a partir del área de superficie corporal (BSA) para estimar la masa libre de grasa (FFM) de guías de montaña y porteadores utilizando la dilución de óxido de deuterio (MDD) como método criterio. Métodos: Estudio transversal en 23 hombres jóvenes y adultos que trabajan como guías de montaña y porteadores en el Aconcagua (Argentina). Los voluntarios tenían edades comprendidas entre 20 y 50 años. El peso, la altura, el índice de masa corporal (IMC) y el BSA se evaluaron mediante ocho ecuaciones de regresión. Resultados: Se generaron tres ecuaciones de regresión lineal considerando como predictores la edad cronológica y el ASC: Modelo 1 (FFM = - 25.287 - (0.260 * edad) + (49.014 * ASC1), R2 = 63.0%), modelo 2 (FFM = -20.736 - (0,191 * edad) + (45,523 * ASC2), R2 = 62,0%) y modelo 3 (FFM = -28,592 - (0,244 * edad) + (52,499 * ASC3), R2 = 63,0). Conclusión: Se generaron tres modelos predictivos basados en edad y ASC que permiten estimar la MLG de forma válida y confiable. Los resultados sugieren su uso y aplicación para el seguimiento antes, durante y después de las expediciones.

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