An acute myocardial infarction is the leading sign of ischemic heart disease. With suitable treatment and adherence to measures of secondary prevention, the cardiovascular rehabilitaion is proven to have a positive effect on survival and life quality of cardiological patients. The purpose of this study was to determine whether seks and age, as wellas frequency of participation in cardiovascular rehabilitation,have a significant influence on patient recovory after an initial myocardial infarction. The data from discharge letters and anamnesis of 474 patients, who were included in standard programme of cardiovascular rehabilition at Polyclinic Srčana Zagreb during the period between September 10, 2015 and Septmber 10, 2019, were analyzed in hindsight by usage of descriptive statistics method. A high share of sampled men (75.1 %) in regards to women (24.9 %) has shown the problem of including the women in rehabilitation for they had the poorer recovery rate than men, which was also visible by analysing the results of exercise capacity for ≥2 metabolic equivalent carried out by ergonomical testing during discharge. A sustainable difference was also noted in regulared attendance to medical gymnastics classes. The older patients (>70 years of age) were not so regular at medical gymnastics attendance which resulted in weaker recovery results than those of the younger patients. Therefore, it is necessary to educate our patients on importance of prompt and regular participation in standard programme of cardiovascular rehabilitaion as well as the need to continue being physically active after they have finished with rehabilitation.