BACKGROUND: Despite participation in a cardiac rehabilitation program, there is a downward trajectory of exercise participation during the year following a cardiac event. PURPOSE: The purpose of this study was to test the effectiveness of CHANGE (Change Habits by Applying New Goals and Experiences), a lifestyle modification program designed to increase exercise maintenance in the year following a cardiac rehabilitation program. The CHANGE intervention consists of 5 small-group cognitive-behavioral change counseling sessions in which participants are taught self-efficacy enhancement, problem-solving skills, and relapse prevention strategies to address exercise maintenance problems. METHOD: Participants (N = 250) were randomly assigned to the CHANGE intervention (supplemental to usual care) or a usual-care-only group. Exercise was measured using portable wristwatch heart rate monitors worn during exercise for 1 year. Cox proportional hazards regression was used to determine differences in exercise over the study year between the study groups. RESULTS: Participants in the usual-care group were 76% more likely than those in the CHANGE group to stop exercising during the year following a cardiac rehabilitation program (hazard ratio 1.76, 95% confidence interval 1.08 to 2.86, p = 0.02) when adjusting for the significant covariates race, gender, comorbidity, muscle and joint pain, and baseline motivation. Most participants, however, had less than recommended levels of exercise amount and intensity. CONCLUSIONS: Counseling interventions that use contemporary behavior change strategies, such as the CHANGE intervention, can reduce the number of individuals who do not exercise following cardiac events.

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