Exercise physiology is a branch of the biological sciences and is concerned with the way in which the body responds to exercise and training.
Exercise physiologists typically provide scientific support at various levels to athletes and teams within a single sport or several sports. This may involve monitoring training through the measurement and assessment of such physical functions as respiration, metabolism, body composition, muscle, nutrition, and the nervous, pulmonary and cardiovascular systems.
Exercise physiologists are defined as scientists who investigate the responses and adaptations to muscular activity in humans or animals and use this knowledge to improve human performance. The purpose may be training for a specific sport, improving fitness or the prevention and treatment of illness.