Overview
- A meta-analysis published June 17, 2026 found that smartphone apps and wearable fitness trackers raised daily steps by about 1,100 and added roughly 4 minutes of moderate-to-vigorous activity per day for people with cardiovascular disease.
- The review pooled 14 randomized trials and about 1,057 participants drawn from studies published between 2000 and February 2025 to estimate the average effect of digital interventions.
- The interventions did not produce measurable gains in peak oxygen consumption or walking distance, so researchers say longer and broader trials are needed to show whether the activity uptick leads to lasting fitness or lower rates of illness.
- Typical programs used simple behavior-change tools such as step goals, self-monitoring, feedback, reminders and gamification, which make the interventions cheap to scale and able to link home-based rehab to clinicians remotely.
- Most trial participants had coronary heart disease, which limits generalizability to other groups such as people with heart failure or stroke survivors, and the next steps named by authors include longer follow-up, more diverse patients and trials that track clinical outcomes.