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This study aimed to assess the effects of physically demanding work - measured as energy expenditure (EE) during occupational physical activities (OPA) - on risk of acute myocardial infarction (AMI) among men with and without preexisting ischemic heart disease (IHD).

Occupational physical activity and 20-year incidence of acute myocardial infarction: results from the Kuopio Ischemic Heart Disease Risk Factor Study