Shawn E. Bearden, Ph.D.
Assistant Professor of Physiology
(208) 282-6269
Room 329 Gale Life Sciences Bldg
Vascular Health Laboratory
microcirculation, aging, sex, gender, exercise, cardiovascular physiology, neurovascular interactions, blood flow control
Education
B.S. Sports Medicine, 1994, University of Virginia, Charlottesville, VA
M.S. Exercise Science & Health Promotion, 1996, George Mason University, Fairfax, VA
Ph.D. Exercise Physiology, 2000, Florida State University, Tallahassee, FL
Postdoc, Microcirculation, 2004 Yale University School of Medicine and the John B. Pierce Laboratories, New Haven CT
Biographical Sketch
Dr. Bearden joined the faculty of biology at Idaho State University in August of 2004. His interest in physiology began while growing up in a family of health-care professionals. Coupling this with his experience as an athlete, Dr. Bearden became interested in the demands for oxygen by metabolically active tissue, especially skeletal muscle. This interest led him to study blood flow control as a post-doctoral fellow at Yale University School of Medicine. Dr. Bearden’s work has centered on the physiology of oxygen, both as a damaging free radical and in terms of cellular nutrient demand. His work has included oxidative stress in SCUBA divers, the kinetics of oxygen consumption during non-steady state changes in exercise intensity and, more recently, he has focused on the control of blood flow delivery to active skeletal muscle in young/old and male/female subjects. Dr. Bearden's lab is focused on a newly discovered signalling gas, hydrogen sulfide, and its role in cardiovascular physiology, immunology and inflammation. Dr. Bearden lives with his wife, Trudy, and their cats and dog on the outskirts of Pocatello. The family goes hiking, backpacking and camping whenever they can.
Teaching
BIOL 301/302 Anatomy & Physiology
BIOL 499/652 Advanced Topics in Physiology
Publications
(selected publications; underline denotes student authors)
Bearden S.E., Erik Linn, Blair S. Ashley, Robin C. Looft-Wilson, Age-related changes in conducted vasodilation: effects of exercise training and role in functional hyperemia. American Journal of Physiology: Regulatory, Integrative and Comparative Physiology, 293(4), R1717-1721, 2007.
Bearden, S.E. Advancing age produces sex differences in vasomotor kinetics during and after skeletal muscle contraction. American Journal of Physiology: Regulatory, Integrative and Comparative Physiology , 293(3):R1274-9, 2007.
Bearden, S.E. Effect of aging on the structure and function of skeletal muscle microvascular networks. Microcirculation, 13(4): 305-314, 2006.
Segal, S.S. and Bearden, S.E. Organization and Control of Circulation to Skeletal Muscle, in ACSM’s Advanced Exercise Physiology. Eds. C.M. Tipton, M.N. Sawka, C.A. Tate, R.L. Terjung. Lippincott Williams & Wilkins, 2005.
Bearden, S.E., S.S. Segal. Neurovascular alignment in adult mouse skeletal muscles. Microcirculation, 12(2):161-167, 2005.
Bearden, S.E., G.W. Payne, A. Chisty, S.S. Segal. Arteriolar network architecture and vasomotor function with aging in mouse gluteus maximus muscle. Journal of Physiology, 561(Pt 2):535-545, 2004.
Bearden, S.E., S.S. Segal. Microvessels promote motor nerve survival and regeneration through VEGF following ectopic reattachment. Microcirculation, 11(8):633-644, 2004.
Bearden, S.E., P.C. Henning, T.A. Bearden, R.J. Moffatt. The slow component of VO2 kinetics in very heavy and fatiguing square-wave exercise. European Journal of Applied Physiology, 91:586-594, 2004.
Bearden, S.E., R.J. Moffatt. VO2 and heart rate kinetics in cycling: transitions from an elevated baseline. Journal of Applied Physiology, 90(6):2081-2087, 2001.
Bearden, S.E., R.J. Moffatt. Leg electromyography and the VO2-power relationship during bicycle ergometry. Medicine and Science in Sports and Exercise. 33(7):1241-1245, 2001.
Bearden, S.E., R.J. Moffatt. VO2 slow component: to model or not to model? Medicine and Science in Sports and Exercise, 33(4):677-680, 2001.
Bearden, S.E., R.J. Moffatt. VO2 kinetics and the O2 deficit in heavy exercise. Journal of Applied Physiology, 88: 1407-1412, 2000.
Bearden, S.E., S.N. Cheuvront, T.A. Ring, E.M. Haymes. Oxidative stress during a 3.5-hour exposure to 120 kPa(a) PO2 in human divers. Undersea & Hyperbaric Medicine, 26(3): 159-164, 1999.