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Randall E. Keyser, PhD, FACSM

Department of Rehabilitation Science

Randall Keyser

Dr. Randall E. Keyser is an Associate Professor of Rehabilitation Science. Dr. Keyser's expertise is in exercise physiology and exercise rehabilitation. 

Dr. Keyser received his PhD in exercise physiology and experimental medicine from the University of Toledo in 1985, and post-doctoral experience in cardiovascular disease at Harper Hospital, Wayne State University School of Medicine. He also holds a Bachelor's in Health and Physical Education and a Master's in Athletic Training and Exercise Science, both from Kent State University, earned in 1979 and 1982 respectively. 

Dr. Keyser served as the Chief of Cardiovascular Physiology and Rehabilitation at Butterworth Hospital in Grand Rapids, Michigan, where he investigated the influence of active muscle mass on cardiac regulation in patients with cardiovascular disease. At the same time, Dr. Keyser held faculty research and teaching positions at both Michigan State and Grand Valley State Universities. Dr. Keyser then led the development and implementation of the Physical Rehabilitation Science PhD program at the University of Maryland's School of Medicine, and he served as the program's Director. While at Maryland, Dr. Keyser began to hypothesize that impaired muscle oxygenation is one mechanism for excessive fatigue, and he established this hypothesis in individuals who have systemic lupus erythematosus or HIV. 

After joining the faculty at George Mason University, Dr. Keyser became the National Institutes of Health (NIH) adjunct Principal Associate Investigator and site Principal Investigator on a project funded intramurally by the NIH and in collaboration with INOVA Healthcare. This project examines mechanisms of impairment and exercise-induced improvement in cardiorespiratory function and health-related quality of life in patients who have pulmonary hypertension. In addition to this project, Dr. Keyser is interested in researching exercise rehabilitation for soldiers and civilians who have experienced a traumatic brain injury. 

Dr. Keyser is a Fellow of the American College of Sports Medicine, an Associate Editor for Medicine and Science and Sports and Exercise, and a Clinical Investigator in the Department of Rehabilitation Medicine at the NIH Clinical Center.


  • PhD, Exercise Physiology, University of Toledo, 1985
  • MA, Athletic Training and Exercise Science, Kent State University, 1982
  • BS, Health and Physical Education, Kent State University, 1979