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Updated: Aug 10, 2026

Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma
Published on: November 4, 2010
Abstract:
Strenuous exercise prolonged for several minutes can cause airway obstruction in asthmatic subjects. Initial obstruction becomes most extreme 5-10 min after the completion of exercise and usually remits within a few minutes but may recur 3-6 h later. The response to exercise depends upon the type of exercise. Swimming is less likely to cause exercise-induced asthma than running. Recent exercise or pretreatment with a bronchodilator or cromolyn can inhibit exercise-induced asthma. Nasal breathing or inhalation of warm, fully humidified air during exercise can minimize exercise-induced asthma. Local changes in osmolarity or cooling of mast cells probably causes release of mediators that cause airway obstruction.
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