Forty patients who had had myocardial infarction six months before their entry into the study were examined using perfusion scintigraphy of the myocardium with 201TI. The patients were divided into the test and the control group. The patients of the test group trained intensively for 12 months according to the special programme which contributed to an improvement of myocardial perfusion at rest irrespective of the nature of the previous myocardial infarction and the clinical severity of coronary insufficiency. A considerable enhancement of tolerance to exercise as a result of the training leads to prevention of the ischemic response to the exercise whose earlier level proved to be the threshold.
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