EXERCISE INDUCED ASTHMA. A condition defined as a spasm or constriction of the bronchial tubes causing diminished airflow resulting in wheezing, tightness of the chest, difficulty breathing, and sometimes coughing. When the vital capacity, or the total volume of air that can be forcibly exhaled in one breath, does not change or decreases with exercise, the person most likely has EIA. The vital capacity should normally increase with exercise. Almost all people with asthma will have EIA, but those with EIA do not have a problem with breathing unless exercising. Whether you have asthma or EIA it is important to know what is triggering your asthma and how to treat it effectively.