Effects of a Pedometer-Based Intervention on Physical Activity Levels After Cardiac Rehabilitation

Abstract

In Australia, patient adherence to physical activity after a cardiac rehabilitation program (CRP) is poor. This study evaluated the efficacy of a pedometer-based intervention to increase physical activity after CRP. Patients (n = 110) who had attended a CRP were randomized into an intervention or a control group. The 6-week intervention included self-monitored physical activity using a pedometer and step calendar and 2 behavioral counseling and goal-setting sessions. Self-reported physical activity and psychosocial status were collected at baseline, 6 weeks, and 6 months. Participant exercise capacity was measured using a gas exchange analysis system. Study groups were not significantly different at baseline, except for occupation. At 6 weeks and 6 months, improvements in total physical activity sessions (P = .002 and P = .016, respectively), walking minutes (P = .013, 6 weeks only), and walking sessions (P < .001 and P = .035) in the intervention group were significantly greater than those in the control group after adjusting for baseline differences. At 6 months, total physical activity minutes in the intervention group also increased significantly more than those in the control group (P = .044). These self-reported behavioral changes were corroborated by improvements in cardiorespiratory fitness at 6 months in the intervention group (P = .01). There were also significant improvements in psychosocial health at 6 weeks and 6 months in the intervention group. The pedometer-based intervention was successful in increasing physical activity in cardiac patients after a CRP. This intervention could be given to patients to promote adherence to physical activity guidelines after a CRP, particularly in centers where maintenance programs are not available.