People with coronary heart disease who took part in exercise-based cardiac rehabilitation had 28% fewer heart attacks and 35% fewer hospital admissions than people who got no structured exercise, according to a Cochrane review led by the University of Glasgow and published this week. The review pooled 107 randomized trials with 26,886 people, and its newest trials included home-based and digitally supported programs, not only traditional center-based rehab.
If you have had a heart attack, a stent, bypass surgery, or angina, this is the practical point: cardiac rehab is a proven part of recovery, and not being able to get to a rehab center no longer has to rule you out. What it does not do is tell you which program, how hard to exercise, or when to start. Those depend on your heart and belong in a conversation with your cardiologist.
Key takeaways
- Across 107 trials, exercise-based cardiac rehab cut heart attacks by 28% and all-cause hospital admissions by 35%, and it probably reduces deaths.
- Within 6 to 12 months of starting rehab, one heart attack is prevented for every 71 people who take part.
- Newer trials tested home and app-based programs, but only 17% of the people studied were women.
What the study found
The researchers included randomized trials that compared exercise-based rehab with no structured exercise in adults who had a heart attack, bypass surgery, or a procedure to open a blocked artery, or who had angina or coronary artery disease. Every trial followed people for at least six months. The evidence is current to March 2026.
The Cochrane news release puts the overall drop at 28% for heart attacks and 35% for all-cause hospital admissions. The review’s plain language summary turns those into absolute numbers over a follow-up of 6 to 12 months:
- Heart attacks: one is prevented for every 71 people who take part (25 studies, 8,584 people). The authors are very confident in this result.
- Hospital admissions for any reason: one is likely prevented for every 17 people who take part (21 studies, 3,868 people).
- Deaths from any cause: probably reduced, with one death likely prevented for every 125 people who take part (30 studies, 10,391 people).
- Repeat procedures such as stents or bypass surgery showed little to no difference.
People in rehab also reported better well-being for up to 12 months, and eight studies found the programs cost-effective.
This update added 22 new trials with just under 3,500 participants, many of them testing home-based and digital programs. “We’re able to see that digital programmes work as well as in-person programmes,” said senior author Professor Rod Taylor.
Dr. Kumar’s take
Cardiac rehab is one of the most effective and most skipped treatments in cardiology. If a pill cut heart attacks by 28%, with one heart attack prevented for every 71 people who took it, few patients would leave the hospital without a prescription for it.
The barriers the authors list are ordinary ones: work, transport, and caring for family. That is why the home and digital finding matters more than the headline numbers. A program you can do from your living room removes the drive to a center that stops many people before they begin.
The weak spot is who was studied. Women made up only 17% of participants. Coronary heart disease is the leading cause of death worldwide, and the strongest evidence for one of its core treatments is still built mostly on men. Women deserve trials large enough to show directly how much they gain.
The authors also note that some trials used weaker methods, and it is not known how well people stuck to their exercise programs, which limits confidence in some outcomes. The heart attack result is one they trust most.
What it means for you
- If you have had a heart attack, a stent, bypass surgery, or angina, ask your cardiologist whether you have been referred to cardiac rehab.
- If getting to a center is the problem, ask specifically whether a home-based or app-supported program is available.
- Rehab is not a license to start a hard workout plan on your own. The benefit in these trials came from structured programs, and your cardiologist should decide what is safe for your heart.
Much of heart disease comes from factors people can change, and nearly 9 in 10 US heart disease deaths are preventable. Structured rehab applies that idea after a heart event has already happened.