Daily Health Advices

Who gets asthma when exercise?

Almost all asthma patients who exercise, especially if they are not in treatment or this is insufficient.

A minority of patients with severe asthma suffer exercise-induced asthma despite the best treatment.

Children are particularly affected by this problem, because they are much more active than adults and do more exercise.

When conducting studies, 3% of school-age children has asthma triggered by exercise. These figures vary slightly depending on geographic location.

When studies are done on athletes, says up to 12-15% have or have had asthma with exercise.

20% of the athletes who participated in the 1996 Olympics said they have asthma with exercise.A certain degree of bronchoconstriction has been described in patients with allergic rhinitis, hypersensitivity to grass pollen (hay fever) without showing bronchial asthma. This may indicate that the patient has asthma triggered by exercise undiagnosed and occurs because the airways of these patients often have inflammation and thus an exaggerated response to the effects of drying and cooling of the tracks air.

Severity of symptoms

The severity of symptoms depends on:

The individual response (some individuals are more sensitive than others). This response can, in turn, vary according to circumstances (worse during colds or allergic crises).

The dry, cold air, the drier and colder air, the greater the changes in the lining of the airways and the greater the stimulus for the release of chemical inflammation meters, which produce more bronchoconstriction and leading to more serious symptoms.

The continued exercise (eg running) produces more intense attacks that intermittent exercise (eg, tennis).

The intensity of exercise is also important: the more intense, what are the symptoms: intense exercise demands a faster and deeper breathing, leading to dehydration and cooling of the lining of the airways.

In summary, exercise-induced asthma may be displayed:

In sensitive patients, even with minimal exercise

Insensitive in patients who exercise very vigorously, as amateur or professional athletes

In intermediate cases, with an intermediate sensitivity and moderate exercise levels.

credit to: Dr. Joaquín Muñiz Girón, Dr. Nicola Wilson

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