John Halliwill, Department of Human Physiology
John Halliwill is an academic expert on exercise, sports science and healthy aging. He studies post-exercise hypotension, in which a person's blood pressure drops after workouts. Halliwill directs the UO's Exercise and Environmental Physiology Lab, is co-director of the Evonuk Environmental Physiology Core and was a co-founder of the Bowerman Sports Science Clinic. Halliwill has sought to identify hormonal, neural or metabolic factors responsible for heart-related changes during exposure to environmental and physical stresses. He also is seeking to understand the mechanisms that underlie beneficial effects of exercise, particularly in aging populations. He has studied conditions faced by astronauts, helped Olympic athletes prepare to compete in environmental extremes, and tested equipment for the U.S. Marines.