PURPOSE: The purpose of this study was to determine the prevalence of exercise-induced @entity5143 (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 @entity565 symptoms and health history. Those athletes with a history of @entity565 and currently taking medications for the @entity565 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 @entity565 , at least 14% (16 athletes) were EIB positive. There was a poor correlation between reported symptoms of @entity565 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.

Exercise-induced XXXX prevalence in collegiate cross-country runners.

@entity5143 :: ('MESH:D001986', 'Disease') :: ['bronchospasm'] @entity565 :: ('MESH:D001249', 'Disease') :: ['asthma']
@entity5143 :: (MESH:D001986,Disease) :: ['bronchospasm']
