Aerobic group training improves exercise capacity and heart rate variability in elderly patients with a recent coronary event. A randomized controlled study
Summary
This summary is machine-generated.Supervised aerobic group training improved exercise capacity and heart rate variability in elderly patients after acute coronary events. This intervention offers a favorable prognosis by enhancing physical function and key cardiac autonomic markers.
Area Of Science
- Cardiology
- Exercise Physiology
- Autonomic Nervous System Function
Background
- Reduced heart rate variability (HRV) is linked to poor prognosis in ischemic heart disease.
- The impact of physical training on HRV in cardiac patients remains incompletely understood.
- This study investigated the effects of aerobic training on HRV and physical capacity in elderly patients post-acute coronary events.
Purpose Of The Study
- To determine if a 3-month supervised aerobic group training program can enhance physical capacity and HRV in elderly patients recovering from acute myocardial infarction or unstable angina.
- To assess the prognostic implications of training-induced changes in HRV.
Main Methods
- 65 elderly patients (post-acute myocardial infarction or unstable angina) were randomized into a 3-month supervised outpatient group training program or a control group.
- 24-hour ambulatory ECG monitoring was used to analyze HRV in time and frequency domains.
- Exercise tolerance was measured at baseline and follow-up.
Main Results
- The training group showed a significant increase in exercise tolerance (103W to 120W, P<0.001).
- Daytime HRV measures (SDNN, SDANN) significantly improved in the training group (P<0.01, P<0.05).
- A significant correlation was found between improved HRV (24h overall power) and enhanced exercise capacity in the training group (P<0.05).
Conclusions
- Regular aerobic group training post-acute coronary event significantly improves exercise capacity in elderly patients.
- This training regimen positively modifies heart rate variability, suggesting a favorable prognostic impact.
- Supervised aerobic exercise is a viable strategy for cardiac rehabilitation in low-to-intermediate risk patients recovering from acute coronary events.
View abstract on PubMed