A simple technique for cold air and exercise challenge to assess bronchial reactivity: the effects of acute coryzal rhinitis on airway reactivity.
The bronchoconstrictor response to exercise which occurs in asthmatics can be enhanced by the simultaneous inhalation of cold air. We describe here a simple technique for the delivery of sub-freezing inspired air during exercise. We have examined airway function at rest and following cold air/exercise challenge in 24 healthy young adults during acute coryzal rhinitis and six weeks later. There were no clinically significant changes in baseline airway function or airway responsiveness to cold air/exercise in association with acute coryzal rhinitis.
D000328:Adult; D001249:Asthma / Q000209:etiology*; D001250:Asthma, Exercise-Induced / Q000209:etiology*; D003080:Cold Temperature; D005260:Female; D006801:Humans; D008297:Male; D008722:Methods; D012129:Respiratory Function Tests; D012220:Rhinitis / Q000503:physiopathology*