There have been studied the left ventricular performance at 71 patients (66 B/5 F) with myocardial infarction during the convalescence period, admitted in the Department of Clinical Rehabilitation in a period of time between 01.01.1992-31.10.1993. Mean age was 49.9 +/- 4.3 years. Most of the patients had antero-septal (33 patients--46%) and posteroinferior (29 patients--41%) myocardial infarction. The left ventricular performance was assessed by the study of exercise electrocardiography (TTI), of the systolic intervals using the Weissler equations and echocardiography (M-mode and 2D). After the period pf training (21 days), we saw a significant reduction of TTI at the same step of the test. The systolic intervals significantly modified after the training were PEVS (p < 0.025), PEP/PEVS (p < 0.025), EF (p < 0.025). EF and SF measured echographically do not indicate significant differences after the training. There are not important improvements of the wall motion disorders at the end of the period.