Following myocardial infarction, cardiac rehabilitation has undeniable benefits on criteria such as cardiovascular mortality and coronary recurrence. Cardiac rehabilitation consists of 3 phases: 1. immediate post-acute, in a cardiology department, 2. active cardiac rehabilitation for several weeks under medical supervision as an inpatient or outpatient, 3. Resumption of active life by the patient. Indeed, one of the major aims of secondary prevention is long-term adherence to physical activity.However, only 20% to 40% of coronary patients remain physically active at 6 months or 1 year, and the effects of Phase 2 cardiac rehabilitation are not maintained. Managing to maintain at least a moderate level of physical activity after Phase 2 of CR is a major objective. Various interventions (booklets, applications, activity programs, motivational talks led by healthcare professionals have been tested and compared with the usual care in Phase 3 cardiac rehabilitation. An effect seems to exist on the level of physical activity reported, but with a significant evaluation bias. This study aims to use accelerometry to evaluate the 6-month efficacy of the therapeutic education program for consolidation in phase 3 of Cardiovascular Rehabilitation involving a patient partner and a caregiver on moderate-to-sustained physical activity (\> 3 METs) in coronary patients on Phase 3 of cardiac rehabilitation compared with usual rehabilitation management.