Tim Kambic1, Vedran Hadžić2, Mitja Lainscak3,4,5. 1. Cardiac Rehabilitation Unit, Department of Research and Education, General Hospital Murska Sobota, 9000 Murska Sobota, Slovenia. 2. Department of Medical Sciences in Sport, Faculty of Sport, University of Ljubljana, 1000 Ljubljana, Slovenia. 3. Division of Cardiology, Department of Internal Medicine, General Hospital Murska Sobota, Rakican, Ulica dr. Vrbnjaka 6, 9000 Murska Sobota, Slovenia. 4. Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia. 5. Slovenian Research Agency, 1000 Ljubljana, Slovenia.