BACKGROUND
Cardiac rehabilitation (CR) is an exercise-based program prescribed after cardiac events that is associated with improved physical, mental, and social functioning; however, many patients return to a sedentary lifestyle leading to deteriorating exercise capacity after discharge from CR. Physical activity (PA) is critical to avoid recurrence of cardiac events and mortality as well as maintaining functional capacity. Leveraging digital health strategies to increase adherence to PA is a promising approach. We sought to determine whether mobile health strategies (MOVN mobile app for self-monitoring, supportive push-through messages, and wearable activity tracker) would improve PA and exercise capacity over 2 months.
OBJECTIVE
The objectives of this study were to: 1) evaluate group differences in PA and exercise capacity; and 2) determine group differences in depression and self-efficacy to maintain exercise after CR.
METHODS
During the final week of outpatient CR, patients were randomized 1:1 to the intervention group or usual care. The intervention group downloaded the MOVN mobile app, received supportive push-through messages on motivation and secondary prevention of cardiovascular disease (CVD) 3 times per week, and wore a Fitbit Charge 2 to track steps. Participants in the usual care group wore a pedometer and recorded their daily steps in a diary. Data from the 6MWT and self-reported questionnaires were collected at baseline and 2 months.
RESULTS
We recruited 60 patients from 2 CR sites at a community hospital in Northern California. The mean age was 66.8 ± 8.6 and 22% were female; retention rate of 85%. Our results from 51 patients who completed follow up showed the intervention group had a statistically significant higher mean daily steps count compared to the control (8,860 vs. 6,633) (P = .021). There was no difference between groups for the 6MWT, depression, or self-efficacy to maintain exercise.
CONCLUSIONS
Our technology-based intervention using a mobile app, push-through messages, and Fitbit proposes a low-cost, pragmatic, and contemporary approach to promote physical activity and sustain exercise capacity after completing CR. This intervention addresses a major public health initiative to promote PA in patients with CVD with the potential to improve critical PA, clinical, and psychosocial outcomes.
CLINICALTRIAL
“Trial Registration: ClinicalTrials.gov NCT03446313”