Aim: this paper reports the results of a nursing-administered theory-based intervention, the "Moving Heart Program", based on the implementation intention theory and pointed at improving physical activity adherence among coronary heart disease outpatients in Brazil.
Methods: this experimental study applied assessments at baseline, 1 and 2 months after baseline. The Consolidated Standards of Reporting Trials statement was followed. Participants were randomly assigned to intervention, comprising action and coping plans on how to deal with anticipated barriers (n=69), or a standard-care control group (n=67).
Results: participants submitted to the intervention showed significant higher levels of physical activity 2 months after baseline and were significantly more active than the control group.
Conclusions: the results indicate that the intervention is feasible for patients with coronary heart disease and can be a useful tool to facilitate intended lifestyle changes. This study brings relevant contributions to the Nursing field and other health-related areas, once the intervention presents low cost to health services and can be applied in cardiac rehabilitation programs, showing significant benefits to participants.