In the group of children after cardiac surgery controlled physical activity is usually not only possible, but necessary. The recommendations of the European Society of Cardiology in 2010 for the treatment of adult patients with congenital heart defects are that physical activity has to be adapted to individual capabilities, current health status and the risk of sudden decompensation and arrhythmias.Assessment of physical activity in a group of school age children after cardiac surgery and awareness on participation in physical culture of the study group and their parents.98 children at a school age after cardiovascular surgery, and 98 parents/legal guardians of these children took part in the survey.In more than half of the children that took part in physical education classes, 79% think that they get tired faster than their peers. Only 13% of the parents/legal guardians claim that their children's participation in daily activities is lower than the one represented by their peers. Most of the parents/legal guardians think that physical activity is beneficial as far as proper development is concerned, and let their children undertake it. The declaration of respondents indicate that only half of them were informed from the hospital about indications and contraindications of physical activity for their child.The results of the research indicate that children after cardiovascular surgery lead an active lifestyle; they often take part in different forms of physical activity and recreation. Awareness of the study group on participation in physical culture is high. Due to the fact that only half of the parents declared to have obtained information from the hospital about the indications and contraindications of physical activity for their child it could be argued that this was because of the prevalence knowledge on this subject.