Key result
Additional physical activity of ≥5,434 steps per day during a cardiac rehabilitation program significantly improved the time constant of heart rate recovery to 288.6 seconds compared to 480.1 seconds in less-active patients after CABG.
Why the study?
Does additional physical activity outside a cardiac rehabilitation program improve heart rate recovery in male patients after coronary artery bypass grafting?
Cohort (n=20)
No
Does additional physical activity outside a cardiac rehabilitation program improve heart rate recovery in male patients after coronary artery bypass grafting?
Absolute Event Rate: 288.6% vs 480.1%
p-value: p=<0.05
Additional daily physical activity (walking ≥5,434 steps/day) outside of formal cardiac rehabilitation significantly improves heart rate recovery, a marker of vagal activity, in male patients post-CABG.
Additional activity outside CR should not yet change practice for post-CABG HRR; leaves open acceleration in larger trials.
BACKGROUND: Heart rate recovery (HRR) after exercise, which is thought to be a marker of vagal activity, has been reported to improve after cardiac rehabilitation (CR) with exercise in patients with coronary heart disease. The aim of this study was to determine whether or not additional physical activity outside the CR program, would accelerate improvement of the HRR in male patients after coronary artery bypass grafting (CABG). METHODS AND RESULTS: Twenty male patients were enrolled in a supervised CR program at 2 weeks after CABG, and divided into an active group (walking >or=5,434 steps/day) or a less-active group. The time constant of HRR immediately measured after pedaling exercise was assessed at baseline and after the 2-week CR program. After completion of the CR program, the time constant of HRR improved from 439.7+/-177 s to 288.6+/-97.4 s in the active group (p<0.01), but no changes were observed in the less-active group. CONCLUSIONS: The results suggest that additional physical activity during a CR program may lead to an improved HRR in patients after CABG. Therefore, post-CABG patients should increase their level of physical activity in addition to that in the CR to improve their cardiac autonomic control.
No takes yet. Share an insight, caveat, or question.
Sato et al. (2004) conducted a cohort in Coronary artery bypass grafting (CABG) (n=20). Additional physical activity (≥5,434 steps/day) vs. Less-active group (<5,434 steps/day) was evaluated on Time constant of heart rate recovery (HRR) after exercise (p=<0.05). Additional physical activity of ≥5,434 steps per day during a cardiac rehabilitation program significantly improved the time constant of heart rate recovery to 288.6 seconds compared to 480.1 seconds in less-active patients after CABG.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: