[Importance of isometric training in the rehabilitation of myocardial infarct patients].

A method of isometric exercise was developed for myocardial infarction patients, and its efficiency was evaluated in the course of rehabilitation after acute myocardial infarction in 48 patients aged 39 to 57 years. The trained patients showed significantly increased tolerance to arm and leg isometric exercise and better systemic hemodynamic response to isometric exercise, manifested in a lower cost of one isometric tension unit, and increased minute blood volume, a result of increased stroke volume. It is concluded that isometric exercise has a favorable effect on cardiovascular function and physical working capacity of postmyocardial-infarction patients.