%0 Journal Article
%T A 12-week resistance training program elicits positive changes in hemodynamic responses in the elderly Un programa de ejercicio contra resistencia estimula cambios positivos en la respuesta hemodin芍mica en adultos mayores
%A Cinthya Campos Salazar
%A Norbel Rom芍n Garita
%J Pensar en Movimiento : Revista de Ciencias del Ejercicio y la Salud
%D 2008
%I Universidad de Costa Rica
%X The aim of the study was to determine the effect of a resistance training program in hemodynamic responses and adaptations in 60 yr. old elderly. Volunteers were 60 healthy-elderly who underwent a training program 3 times/wk. for 12 wk. Participants were randomly assigned to either a control group, an exercise group who trained at 30% intensity of 5 maximal repetitions (5RM) (30% of 5RM) or an exercise group at an intensity of 70% (70% of 5RM). Hemodynamic variables measured were mean arterial pressure (MAP), calculated before and immediately after the training session, and rate pressure product (RPP), estimated once a month and before and after finishing the program. Results indicated that resistance exercise training at 30% and 70% of 5RM, with a total exercise work of 872.7 and 890.9 kg did not elicited cardiovascular risks for the elderly. A 12-wk resistance exercise training reduced the cardiovascular strain as shown by the RPP (~16%) and the MAP (~9%), with no adverse effects throughout the program. Unfortunately, all the hemodynamic benefits were reverted 6 days following completion of the program. In conclusion, a healthy elderly population must perform resistance training exercises to significantly reduce the cardiovascular stress. We suggest to conduct further research that looks into different exercise intensities in longer program duration and to determine the mechanisms responsible for the deleterious effects of the detraining by using physiological, biochemical and biomechanical variables. El prop車sito del estudio fue determinar el efecto de un programa de ejercicios contra resistencia en las respuestas y adaptaciones hemodin芍micas de adultos mayores de 60 a os. Se reclutaron 60 adultos mayores sanos, quienes ejecutaron un programa de entrenamiento de 3 sesiones semanales durante 12 semanas. Los participantes fueron asignados aleatoriamente a un grupo control, a un grupo que se ejercit車 al 30% de 5 repeticiones m芍ximas (5RM) o a un grupo que se ejercit車 al 70% de 5RM. Las variables hemodin芍micas fueron la presi車n arterial media (PAM), la cual fue calculada antes e inmediatamente despu谷s de realizar el ejercicio, y el doble producto (DP), que se determin車 una vez cada 4 semanas durante el programa y tambi谷n antes y despu谷s de finalizado el mismo. Los resultados mostraron que el ejercicio contra resistencia al 30% y 70% de 5RM, con una carga total de ejercicio entre 872.7 y 890.9 kg, respectivamente, no presenta niveles de riesgo cardiovascular. Se observ車 que el programa de 12 semanas de entrenamiento contra resistencia reduce el grado de e
%K Entrenamiento contra resistencia
%K adulto mayor
%K presi車n arterial
%K frecuencia card赤aca
%U http://www.revistas.ucr.ac.cr/index.php/pem/article/view/368