He is an expert in environmental (heat, cold, high-altitude) physiology, thermoregulation, blood volume control, fluid / electrolyte balance (dehydration and rehydration), hydration assessment, exertional heat illness, exercise physiology, and rehabilitation medicine. Dr. Sawka published >300 full-length manuscripts and book chapters (>24,800 literature citations); edited graduate textbooks on environmental physiology and exercise physiology. He presented >100 invited Symposia and Keynote Lectures at national / international scientific meetings.