Does exercise-based cardiac rehabilitation reduce hospitalization for coronary heart disease?
Exercise-based cardiac rehabilitation (CR) is a structured program that includes supervised exercise training, often combined with education and counseling. For people with coronary heart disease (CHD), the main goal is to improve heart health and prevent future problems. Multiple large studies show that participating in exercise-based CR lowers the chance of being hospitalized for heart-related issues. This answer explains what the research says about hospitalization reduction and what you should discuss with your doctor.
What the research says
A 2023 meta-analysis of 85 randomized controlled trials involving over 23,000 participants found that exercise-based cardiac rehabilitation reduced the risk of hospitalizations by about 23% (risk ratio 0.77) compared to no exercise 9. This means that for every 37 people who attend CR, one hospitalization is prevented. The same analysis also showed a 26% reduction in cardiovascular mortality 9.
A 2021 Cochrane review, which included many of the same trials, confirmed that exercise-based CR reduces hospital admissions (risk ratio 0.82) and cardiovascular mortality (risk ratio 0.74) 10. These findings are consistent with an earlier 2016 Cochrane review that also reported a reduction in hospital admissions 11.
More recently, an individual participant data meta-analysis (the CaReMATCH study) pooled data from 8 modern trials with nearly 5,000 participants, mostly post-heart attack patients. It found that exercise-based CR lowered the risk of all-cause hospitalization by 32% (hazard ratio 0.68) and cardiovascular-related hospitalization by 38% (hazard ratio 0.62) 4. However, this analysis did not find a significant reduction in mortality 4.
Overall, the evidence consistently shows that exercise-based cardiac rehabilitation reduces hospitalizations for people with coronary heart disease. The effect on mortality is less clear in the most recent analysis, but the benefit for preventing hospital stays is well supported.
What to ask your doctor
- Is an exercise-based cardiac rehabilitation program available near me, and is it covered by my insurance?
- Given my specific heart condition (e.g., after a heart attack or bypass surgery), how much could CR reduce my risk of hospitalization?
- What does a typical exercise-based CR session involve, and how often would I need to attend?
- Are there any risks or precautions I should know about before starting an exercise program?
- Can you refer me to a cardiac rehabilitation program that fits my schedule and health needs?
This question is drawn from common patient questions about this topic and answered using cited medical research. We do not provide individualized advice.