The aim was to analyze the usability of Minnesota Leisure Time Physical Activity Questionnaire (MLTPAQ) in assessment of physical activity in patients before and 6 months after percutaneous coronary intervention (PCI). The study group consisted of 211 patients aged between 34-79 years (x = 59,5±7,89 yeras), with history of ischemic heart disease (IHD) with or without previous incidence of myocardial infarction (MI). The MLTPAQ was administered to all patients at the time of PCI and then 6 months later, as was the treadmill stress test (TST) and echocardiography (ECHO). Total energy expenditure calculated with the MLTPAQ remained at the same level and was of low intensity (<4 MET, <2000kcal/week) 6 months after the PCI. There was an increased physical capacity noted 6 months after initial PCI: increased metabolic cost (MET); maximal oxygen uptake (VO2max); maximal heart rate (HRmax) obtained during the TST and decreased resting heart rate (HRrest). ECHO examination showed improved LVEF%. Despite increased physical capacity and improved heart hemodynamics, resulting most likely from PCI procedure, the patients showed a similar level of leisure time physical activity 6 months after the PCI.