What causes exercise-induced asthma?

The reason why asthma symptoms may be brought on during exercise has not been completely established but it is thought that because breathing becomes heavy and we breathe faster when we exercise, the linings of our airways narrow and dry out. Also weather conditions and allergies, such as an allergy to pollen, can also trigger asthma-like symptoms when exercising.

Recognising exericse-induced asthma (EIA)

Diagnosis is often made after symptoms, such as wheezing and a tight chest, are experienced during exercise, but this can result in either over-diagnosis, where athletes report symptoms but DO NOT have narrowing of the airways, or under-diagnosis where athletes who’re asymptomatic (showing no symptoms) DO have narrowing of the airways which affects their performance.

The scenarios above are supported in studies where elite athletes have been screened and shown to have EIA, such as reported by British Olympic Teams in the 2012 Olympics where it found that 25% of Team GB suffers from exercise-induced asthma. And at the 1996 Olympic games 20% of athletes reported asthma upon exercising.

Why screen for EIA?

The main reason is because exercise-induced asthma may be detrimental to an athlete's performance, as it’s already been shown to reduce exercise capacity and running speed in colder environments which will not only affect an athlete during training but also during competition.

Treatment of EIA

Both pharmacological and non pharmacological therapies are currently successfully used to treat EIA, and studies have also highlighted the benefits of adjunctive intervention. POWERbreathe Inspiratory Muscle Training can be used as an adjunctive intervention, not only for daily training, but also as a respiratory warm-up prior to exercise.

Read more about Respiratory Disorders in endurance athletes in our blog.

And here’s an interesting article that looks at Pollen and Exercise Induced Asthma >

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