Exercise-induced Asthma

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Exercise-induced asthma is an acute transient airway narrowing that occurs during and most often after exercise. It is objectively defined as a 10% fall in forced expiratory volume in the first second from baseline that may be measured up to thirty minutes following exercise (M&M). Exercise-induced asthma occurs not only in elite athletes and asthmatics, but it can also be found in non-asthmatics. The stimulation of exercise-induced asthma can range anywhere from inhaling allergens to hyperventilation or intense exercise. The management and prevention of exercise-induced asthma is a series of trials to reduce the effects of prolonged bronchoconstriction.
In some cases, exercise-induced asthma is referred to as exercise-induced bronchoconstriction (M&M). The two terms have been used interchangeably, however they are two different things and should be treated as such. Exercise-induced asthma describes patients who have underlying asthma in which exercise triggers an attack. Exercise-induced bronchospasm describes patients who do not have a family history of asthma and only have exercise associated bronchospasms. Another noticeable difference is that treatment for exercise-induced asthma is aimed at reducing symptoms all the time, whereas treatment for exercise-induced bronchospasm focuses on reducing symptoms solely during exercise (EIB Sports Health).
Stimulation
It has been estimated that up to 90% of all asthmatics are hyperresponsive to exercise. In addition, high-intensity exercise contributes to the development of asthma and is the most common trigger of an acute asthma attack. Consequently, exercise-induced asthma in athletes most likely develops during an active sports career. Likewise, exercise-induced asthma seems to slow...

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Kallenbach, J. M., Panz, V., Girson, M. S., Joffe, B. I., & Seftel, H. C. (1990). The hormonal response to exercise in asthma. Eur Respir J, 1990(3), 171-175.

Krafczyk, M., & Asplund, C. (2011). Exercise-induced bronchoconstriction: Diagnosis and management. Am Fam Physician, 84(4), 427-434.

Morris, K. J. (2010). Management of Exercise-Induced Bronchospasm in Adolescents with
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Schnall, R. P., & Landau, L. I. (1980). Protective effects of repeated short sprints in exercise-induced asthma.Thorax,1980(35), 828-832.

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