Document Detail

Exercise-induced bronchospasm at low temperature in elite runners.
MedLine Citation:
PMID:  8693447     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Healthy elite runners often report bronchial symptoms when training in subzero temperatures. The occurrence and causes of exercise-induced bronchospasm after heavy exercise in cold air were investigated in elite runners. METHODS: Thirty two non-asthmatic runners, mostly from Finnish national teams, volunteered to take part in the study. They answered a questionnaire and were subjected at subzero temperature to a heavy exercise challenge test combined with lung function testing. RESULTS: Sixteen of the runners were atopic on skin prick tests. The mean (SD) maximal change in forced expiratory volume in one second (FEV1) after the exercise challenge was -4.8 (7.1)% in the atopic runners, and +2.1 (3.4)% in the non-atopic runners. When the mean maximal change in FEV1 minus 2SD (-4.7%) of the exercise response of the non-atopic runners was taken as the lower limit of a "normal" result, eight of the atopic runners responded abnormally. CONCLUSIONS: Heavy exercise at temperatures below zero causes bronchospasm in a high proportion of elite runners with atopy. Although the changes in lung function are mostly small, they may affect the maximal performance of atopic runners. Non-atopic runners are not affected.
I J Helenius; H O Tikkanen; T Haahtela
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Thorax     Volume:  51     ISSN:  0040-6376     ISO Abbreviation:  Thorax     Publication Date:  1996 Jun 
Date Detail:
Created Date:  1996-08-29     Completed Date:  1996-08-29     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0417353     Medline TA:  Thorax     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  628-9     Citation Subset:  IM    
Department of Allergic Diseases, Helsinki University Central Hospital, Finland.
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MeSH Terms
Bronchial Spasm / etiology*
Cold Temperature / adverse effects*
Forced Expiratory Volume
Hypersensitivity, Immediate / complications*,  physiopathology
Running / physiology*
Skin Tests

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