Document Detail

Exercise-induced bronchospasm prevalence in collegiate cross-country runners.
MedLine Citation:
PMID:  11581546     Owner:  NLM     Status:  MEDLINE    
PURPOSE: The purpose of this study was to determine the prevalence of exercise-induced bronchospasm (EIB) in collegiate cross-country runners using a protocol involving an intense exercise challenge conducted in the same environment in which the athletes train and compete. METHODS: One-hundred eighteen collegiate cross-country runners from the Los Angeles, California, metropolitan area participated in the study. All testing took place on a track at the time and location of a normal practice session. The baseline peak expiratory flow rate (PEFR) measurements (best of three) and preexercise heart rate were recorded, after which the athletes ran 2000 m on a track at 85% of maximum heart rate. The postexercise heart rate was recorded and then PEFR measurements at 2, 5, 10, and 30 min after exercise were recorded. The athletes completed a 16-item questionnaire regarding asthma symptoms and health history. Those athletes with a history of asthma and currently taking medications for the asthma were then excluded from statistical analysis of the questionnaire responses. A decrease in PEFR of 15% was considered positive for EIB. RESULTS: Of the 114 athletes not currently taking medications for asthma, at least 14% (16 athletes) were EIB positive. There was a poor correlation between reported symptoms of asthma and testing positive for EIB. CONCLUSION: This study demonstrates a high prevalence of EIB in collegiate cross-country runners (at least 14%) and that reported symptoms are a poor predictor of actual EIB.
R T Thole; R E Sallis; A L Rubin; G N Smith
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Medicine and science in sports and exercise     Volume:  33     ISSN:  0195-9131     ISO Abbreviation:  Med Sci Sports Exerc     Publication Date:  2001 Oct 
Date Detail:
Created Date:  2001-10-02     Completed Date:  2001-12-04     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8005433     Medline TA:  Med Sci Sports Exerc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1641-6     Citation Subset:  IM; S    
Kaiser Permanente Sports Medicine Fellowship, USA.
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MeSH Terms
Asthma, Exercise-Induced / drug therapy,  epidemiology*,  physiopathology
California / epidemiology
Exercise / physiology*
Exercise Test
Heart Rate / physiology
Peak Expiratory Flow Rate / physiology
Running / physiology*

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