All had coverage through Medicare to help pay for cardiac rehab.

They're hoping to present the results at a cardiac rehab conference in the fall.

It's estimated that only about 30 percent of eligible patients attend a cardiac rehab program.

Women were 9% less likely to go to cardiac rehab than men, the study found.

So one of the challenges Wellframe will face is getting doctors to prescribe cardiac rehab to their patients.

I had four weeks of at-home physical therapy, then it was time for me to do outpatient cardiac rehab.

A successful home-based cardiac rehab program would still be supervised by clinicians, but help cut down on hospital visits.

Right now, cardiac rehab standards, including the ones the Wellframe crew is deploying through their app, are not really personalized.

The study wasn't designed to prove whether or how any specific factors cause patients to miss out on cardiac rehab.

He told Reuters Health cardiac rehab is considered safe for the vast majority of patients well enough to undergo heart surgery.

Overall, just 89,327 people, or about 24%, went to any cardiac rehab at all.

Among those who do go to cardiac rehab, most don't complete enough sessions to get the maximum benefit, the study also found.

Lavie said there are plenty of other studies, however, showing that patients in cardiac rehab have better outcomes than those who don't attend.

Overall, only 43% of them enrolled in medically-supervised cardiac rehab programs focused on things like stress reduction, exercise and heart-healthy living.

And people living in the Midwest were more than twice as likely to go to cardiac rehab as patients living in southern states.

Right now cardiac rehab works pretty much the same whether you're 40 or 80, but real people have different goals and needs.