Could a personal trainer cut heart attack deaths?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Hospitalized in a Norwegian hospital with an acute myocardial infarction (Type I) during 2013-2022. Patients are included minimum 3 months after hospitalization when they are in a stable clinical condition. 2. Norwegian national identification number 3. Able to communicate in Norwegian or other Scandinavian language 4. Being able to be physically active according to study protocol, as determined by study personnel. 5. Signed informed consent. Exclusion criteria: 1. Persons who already participate in physical activity at a similar or higher level than what is prescribed for the intervention group, as determined by study personnel. 2. Participating or plans to participate in endurance sport competitions. 3. Expected to emigrate during the study 4. Cognitive impairment/dementia. 5. Alcohol or drug abuse, or serious psychiatric disease. 6. Known cardiac disease that may represent a contraindication for moderate or high-intensity physical activity, such as symptomatic valvular heart disease, hypertrophic cardiomyopathy, uncontrolled hypertension, in-compensated heart failure, serious arrythmia not under control after treatment, pulmonary hypertension, significant angina after revascularization and optimal drug treatment. 7. Renal insufficiency requiring dialysis. 8. Any end-stage somatic disease with short life expectancy or that is expected to interfere with the participants' ability to comply with the study protocol, such as advanced cancer, chronic lung disease with exacerbations, or other disease, as determined by study personnel. 9. Inability to comply with the study protocol due to any physical disability, somatic disease or mental problem, as determined by study personnel. 10. Residing in nursing home or other institution. 11. Participation in another trial with exercise as an intervention modality.