The aim of this study is to compare the effects of "cardiac rehabilitation" and "cardiac rehabilitation combined with EECP" on patients with ischemic heart disease according to the biochemical parameters (plasma levels of nitric oxide, endothelin-1 and High sensitive CRP) as a primary outcome and clinical parameters (Canadian Cardiovascular Society Angina scale, quality of life questionnaire SF36) as secondary outcomes. A total of 40 cases of ischemic heart disease, which is documented by angiography, perfusion scan, ECG or exercise stress test, with at least ejection fraction of 30% and age more than 30 years old will be enrolled. The patients are randomly assigned into 2 groups: Group A receive only 20-session cardiac rehabilitation, based on CR-2 protocol includes a 10 minutes warm up, 20 minutes walking on treadmill, cycling on stationary bike, and finally 5 minutes of relaxation and cool down take place. Group B receive with cardiac rehabilitation combined with 35 sessions of EECP that each session lasting one hour. Before treatment and at the end of the study, HSCRP, ET1, and NO are checked. And in the group B, prior to receiving EECP, HSCRP, ET1, and NO are rechecked. CCS Angina Scale and the quality of life questionnaire SF36 will be completed by the patients at the beginning and at end of the study.