1. Physical Therapy Department for Cardiovascular/Respiratory Disorders and Geriatrics, Faculty of Physical Therapy, Beni-Suef University , Nile East Compus, New Beni Suef City, Beni-Suef 2730430 , Egypt
2. Physical Therapy Department for Cardiovascular/Respiratory Disorder and Geriatrics, Faculty of Physical Therapy, Cairo University , Giza , Egypt
3. Cardiology Department, Faculty of Medicine, Ain Shams University , Cairo , Egypt