Dual-energy X-ray absorptiometry and forced expiratory volumes in sedentary and trained children. [Absorciometria dual de rayos x y volúmenes espirométricos forzados en niños sedentarios y entrenados].

Álvaro Fernández-Luna, María Plaza-Carmona, Esther Ubago-Guisado, Ignacio Ara, María Martín-García, Jorge García-Unanue, Leonor Gallardo


Information regarding the influence of physical activity and fat mass in the human trunk on respiratory health is scarce. The aim of this study was to evaluate the influence of body composition and physical activity in forced expiratory volumes in children. The sample comprised 87 children between 8 and 13 years of age (9.62 ± 1.25), at Tanner stages I-III, participated in this study. Sixty played sports (trained children, TC) and 27 were assigned to the sedentary children control group (SC). Body composition (DXA), anthropometric variables (weight and height), and forced expiratory volumes (FEV1 and FVC) were determined in all subjects. Results showed that higher FEV1 and FVC values were found in the SC group compared to the TC group. Multiple regression analysis showed that physical activity, total fat mass, and android fat mass, had the highest predictive value for FVE1 as did height for the FVC. In SC group there was a positive association between FEV1/FVC ratio and Body Mass Index and trunk fat mass. We did not find any associations between forced respiratory volumes and the whole body and trunk region fat mass in trained and sedentary children.


La información sobre los diferentes efectos de la actividad física y la masa grasa del tronco en la salud respiratoria es escasa. El objetivo fue evaluar la influencia de las variables de composición corporal y la práctica de actividad física en los volúmenes espirométricos forzados en edad infantil. 87 niños entre los 8 y 13 años (9,62 ± 1,25) (Tanner  I-III) participaron en el estudio. 60 practicaban diferentes deportes (niños entrenados, TC) y 27 niños sedentarios fueron asignados al grupo control (SC). Se llevó a cabo la evaluación en todos los participantes de la composición corporal a través de DEXA, variables antropométricas (peso y altura) y volúmenes espirométricos forzados (FEV1 and FVC). Los resultados mostraron que el grupo SC tenía unos volúmenes FEV1 y FVC superiores respecto al grupo TC. El análisis de regresión múltiple indica que la actividad física, la masa grasa total y el porcentaje de grasa del segmento androide son las variables con mayor valor predictivo para los volúmenes de FEV1, mientras que la altura lo es para la FVC. En el grupo SC se observó una relación positiva entre el índice de masa corporal, la masa grasa en tronco y el ratio FEV1/FVC. No se encontró ninguna relación entre los volúmenes respiratorios forzados y la cantidad de masa grasa en el tronco y en el cuerpo entero en el grupo de niños sedentarios ni en los que realizaban actividad física.




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Palabras clave/key words

DXA; fat mass; forced expiratory volumes; physical activity / Actividad física, DXA, masa grasa, volúmenes espirométricos forzados.

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RICYDE. Revista Internacional de Ciencias del Deporte

Publisher: Ramón Cantó Alcaraz
ISSN:1885-3137 - Periodicidad Trimestral / Quarterly
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