the effect of regular physical activity at home on patients' physical status after coronary artery bypasses surgery hemmati maslakpak m [1] *, amirian z [2] , khalkhali hr [3] , salehi sh [4] received: 5 aug, 2011 accepted: 3 nov, 2011 abstract background & aims : coronary artery disease causes mortality and disability of large part of a country's productive people. oxyg...