| The purpose of the present study was to evaluate the effects of resistance training on the cardiovascular responses of elderly individuals during an orthostatic challenge.; Thirteen subjects were assigned to either a resistance (RES; n = 7; 66 ± 5 yrs.), or a control (CON; n = 6; 71 ± 6 yrs.) group. During the 12-week treatment period, the RES trained 2x/wk, while the CON was asked not to change their normal lifestyles. The resistance training consisted of 3 sets of 8–12 repetitions using 12 machines at approximately 22% to 57% of 1RM. Before and after the training and control period, subjects were tested using a 70° head-up tilt. Tilt consisted of 30 minutes of supine rest while heart rate (HR) was recorded every minute and blood pressure (BP) was taken every 5 minutes. After the rest period, subjects were tilted to 70° for 30 minutes unless subjects experienced presyncopal symptoms. During the tilt period, HR and BP were recorded every minute. After the tilt, subjects were placed in a supine position for 15 minutes of recovery, HR was taken every minute and BP was taken every 5 minutes. A 2 x 2 x 8 (test x group x time) Repeated Measures Analysis of Variance was used to analyze data. Significance was accepted at p ≤ 0.05. (Abstract shortened by UMI.)... |
