Thesis (M.Sc.) - Cairo University - Faculty of Physical Therapy - Department of Physical Therapy for Cardiopulmonary and Geriatrics Disorders

Corrected QT interval (QTc) , a measure of myocardial repolarization, may reflect injury to myocardial cells. QTc prolongation may be predictive of an increased risk of late cardiac decompensation and arrhythmia, so it{u2019}s a predictor for a sudden death. The purpose of the study was to investigate the effect of cardiac rehabilitation program on corrected QT interval in old myocardial infarction patients. Thirty male patients aged from 40 to 50 years old diagnosed as old myocardial infarcion and the patients were randomly divided into two groups, study group; group (A) consisted of fifteen patients received cardiac rehabilitation program including aerobic training using treadmill and bicycle ergometer for 8 weeks, 3 days per week with intensity started at 50% of trainig target heart rate and increased gradually till reaching 80 % at the end of 8 weeks, while the control group; group (B) consisted of fifteen patients didn't perform any exercise. Both groups were evaluated before, after 4 weeks of training program and, after 8 weeks of the cardiac rehabilitation program. Corrected QT interval was taken from resting ECG before and after the cardiac rehabilitation program

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