[Importance of tolerance to physical exercise in the study of the blood coagulation and anticoagulation systems after myocardial infarct].

The results of dynamic studies of some indices of the blood coagulation and anticoagulation systems are presented for 130 male patients surviving myocardial infarction and examined during the first year after this development. Along with signs of hypercoagulation, a high activity of the anticoagulation system was noted throughout the period of observation. 90 patients were examined before and after a tolerance test (with threshold physical exercises on a bicycle) 3, 6 and 12 months following acute myocardial infarction. The physical exercises permitted to reveal the compensatory reserve of the anticoagulation system that manifests itself most clearly 6 months following the onset of the infarction.