OBJECTIVE: To evaluate the effect of smart device-based telerehabilitation on Vo2peak in patients after myocardial infarction. PATIENTS AND METHODS: This was a pilot, single-center, randomized, cross-over study with a 3-month intervention. One month after myocardial infarction, patients had cardiopulmonary exercise testing and a 6-minute walking test (6MWT) and were randomly assigned 1:1. In the intervention group, patients received a smartwatch to track the recommended number of steps, which was individualized and derived from the 6MWT. A study nurse telemonitored adherence to the recommended number of steps a day. In the control group, 150 minutes a week of moderate-intensity physical activity was recommended. After 3 months study arms were crossed over, and study procedures were repeated after 3 months. RESULTS: Between June 1, 2019, and February 28, 2023, 64 patients were randomized, of which 61 (aged 51±10 years, 10% women) completed the study. Overall, the smart device-based telerehabilitation led to 2.31 mL/kg/min (95% CI, 1.25-3.37; P<.001) Vo2peak increase compared with the control treatment. Furthermore, there was a significant effect on weight (-1.50 kg; 95% CI, -0.39 to -2.70), whereas the effect on the 6MWT distance (4.7 m; 95% CI, -11.8 to 21.1) or Kansas City Quality of Life questionnaire score (0.98; 95% CI, -1.38 to 3.35) was not significant. CONCLUSION: Smart device-based cardiac rehabilitation may be a promising alternative for patients unable or unwilling to attend in-person cardiac rehabilitation. TRIAL REGISTRATION: clinicaltrials.gov Identifier: NCT03926312.

1st Medical School Charles University Prague Czech Republic

3rd Medical School Charles University Prague Czech Republic

Department of Cardiology Institute for Clinical and Experimental Medicine Prague Czech Republic

Department of Cardiovascular Medicine Mayo Clinic College of Medicine Rochester MN

Department of Preventive Cardiology Institute for Clinical and Experimental Medicine Prague Czech Republic

Experimental Medicine Centre Institute for Clinical and Experimental Medicine Prague Czech Republic

Medical and Dentistry School Palacký University Olomouc Czech Republic

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ClinicalTrials.gov
NCT03926312