کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5970900 | 1576179 | 2014 | 5 صفحه PDF | دانلود رایگان |
BackgroundExercise prescription in cardiac patients is based on heart rate (HR) response to exercise. How to prescribe long-term exercise training outside medically-supervised settings also considering changes in individual physical capacity over time is unknown. In this study we hypothesized that in patients with chronic heart failure (CHF) the session-rate of perceived exertion (RPE), a subjective-based training methodology, provides autonomic and functional capacity changes superimposable to those observed with HR-based Training Impulses (TRIMPi) method.MethodsTwenty patients with stable CHF were randomized to either aerobic continuous training (ACT) or aerobic interval training (AIT) for 12 weeks. For each TRIMPi-guided exercise session, the session-RPE was recorded. By this method, internal training load (TL) is quantified by multiplying the RPE of the whole training session, using the Borg CR10-scale, by its duration. Heart rate variability (HRV), and baroreflex sensitivity (BRS) were assessed at baseline and at 3 weeks intervals.ResultsSignificant correlations were found between TRIMPi and individual session-RPE, for both ACT and AIT (r = 0.63 to 0.81), (P < 0.05). The same occurred when ACT and AIT groups were pooled together (r = 0.72; P < 0.01). R-R interval, HRV and BRS were significantly and very highly correlated with weekly RPE-session (r2 ranged from 0.77 to 0.97; P < 0.001). A significant relationship between session-RPE and performance at the 6MWT was also found.ConclusionsSession-RPE is an easy-to-use, inexpensive and valid method for exercise prescription and health maintenance, consistent with objective physiological indices of training, that could be used for long-term physical activity in patients with CHF.
Journal: International Journal of Cardiology - Volume 176, Issue 2, 20 September 2014, Pages 394-398