"Do what you can with a happy heart": a longitudinal study of patient and family members' lived experiences of physical activity post-myocardial infarction.

The role of family within the patient's journey was complex, with PA identity, beliefs, and fear of MI re-occurrence influencing PA support both positively and negatively. PA engagement post-MI is a dynamic and interactive process within which the family can have an important influence.IMPLICATIONS FOR REHABILITATIONThe process of (re-)engaging in physical activity post-myocardial infarction involves a complex journey towards acceptance of a new "normality".Family play an important role in regulating and supporting patients' physical activity during the rehabilitation process.Promoting positive health beliefs and helping families understand what, how and when patients should be physically active may optimise the rehabilitation journey for post-myocardial infarction patients.