Exercise has been shown to have extensive health benefits both in normally functioning adults as well as in adults with asthma. A program of regular aquatic exercise may have unique benefits in the asthmatic population because of the known aerobic capacity development typical of such programs, combined with the unique value of immersion-produced improvements in respiratory endurance and cardiac output. The purpose of this study is to explore the effects of a 12 week long aquatic endurance training program on several physiological and psychological parameters related to coronary heart disease and type II diabetes in an asthmatic population.