Exercise-induced bronchoconstriction in elite long-distance runners in Brazil

To determine the prevalence of exercise-induced bronchoconstriction among elite long-distance runners in Brazil and whether there is a difference in the training loads among athletes with and without exercise-induced bronchoconstriction. This was a cross-sectional study involving elite long-distance...

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Bibliographic Details
Published in:Jornal brasileiro de pneumologia 2012-05, Vol.38 (3), p.292-298
Main Authors: Teixeira, Renata Nakata, Teixeira, Luzimar Raimundo, Costa, Luiz Augusto Riani, Martins, Milton Arruda, Mickleborough, Timothy Derick, Carvalho, Celso Ricardo Fernandes
Format: Article
Language:eng ; por
Subjects:
Adult
Asthma, Exercise-Induced - diagnosis
Asthma, Exercise-Induced - epidemiology
Athletes - classification
Athletes - statistics & numerical data
Athletic Performance - physiology
Athletic Performance - statistics & numerical data
Brazil
Epidemiologic Methods
Exercise Test - methods
Humans
Male
Running - physiology
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Summary:To determine the prevalence of exercise-induced bronchoconstriction among elite long-distance runners in Brazil and whether there is a difference in the training loads among athletes with and without exercise-induced bronchoconstriction. This was a cross-sectional study involving elite long-distance runners with neither current asthma symptoms nor a diagnosis of exercise-induced bronchoconstriction. All of the participants underwent eucapnic voluntary hyperpnea challenge and maximal cardiopulmonary exercise tests, as well as completing questionnaires regarding asthma symptoms and physical activity, in order to monitor their weekly training load. Among the 86 male athletes recruited, participation in the study was agreed to by 20, of whom 5 (25%) were subsequently diagnosed with exercise-induced bronchoconstriction. There were no differences between the athletes with and without exercise-induced bronchoconstriction regarding anthropometric characteristics, peak oxygen consumption, baseline pulmonary function values, or reported asthma symptoms. The weekly training load was significantly lower among those with exercise-induced bronchoconstriction than among those without. In this sample of long-distance runners in Brazil, the prevalence of exercise-induced bronchoconstriction was high.
ISSN:1806-3756
DOI:10.1590/S1806-37132012000300003