Document Detail

Exercise-induced bronchoconstriction.
MedLine Citation:
PMID:  23621999     Owner:  NLM     Status:  In-Data-Review    
OBJECTIVE: To review the literature regarding the pathophysiology of exercise-induced bronchoconstriction (EIB).
DATA SOURCES: The databases of PubMed, Ovid MEDLINE, and Scopus were searched for articles using the subject headings and/or keywords asthma, exercise-induced/etiology, exercise, mechanism, pathogenesis, and bronchoconstriction.
STUDY SELECTIONS: Articles were selected based on their relevance to the focus of this review, with emphasis on the specific pathophysiologic mechanisms of EIB.
RESULTS: EIB occurs in response to the loss of water from the lower airways that results from heating and humidifying large volumes of air in a short period. The resulting hyperosmolar environment activates various cellular mechanisms to release mediators from mast cells, eosinophils, epithelial cells, and sensory nerves. These mediators, in turn, lead to airway smooth muscle contraction and bronchoconstriction. Airway hyperresponsiveness in elite athletes may develop from a process of airway injury and changes in the contractile properties of airway smooth muscle.
CONCLUSION: EIB commonly affects individuals with and without clinically recognized asthma, especially those who participate in competitive athletics. Through years of research, the pathophysiology of EIB is now better understood and involves a complex interaction between several different cell types and mediators. Continued research to improve the knowledge regarding the mechanisms of EIB should aid the identification, diagnosis, and treatment of this common condition.
Thanai Pongdee; James T Li
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Publication Detail:
Type:  Journal Article     Date:  2013-03-06
Journal Detail:
Title:  Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology     Volume:  110     ISSN:  1534-4436     ISO Abbreviation:  Ann. Allergy Asthma Immunol.     Publication Date:  2013 May 
Date Detail:
Created Date:  2013-04-29     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9503580     Medline TA:  Ann Allergy Asthma Immunol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  311-5     Citation Subset:  IM    
Copyright Information:
Copyright © 2013 American College of Allergy, Asthma & Immunology. Published by Elsevier Inc. All rights reserved.
Mayo Clinic, Division of Allergy and Pulmonary Medicine, Jacksonville, Florida. Electronic address:
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