Department of Pulmonary Medicine, Hazrat Rasool Hospital, Iran University of Medical Sciences and Health Services,
Department of Pulmonary Medicine, Khorshid Hospital, Isfahan University of Medical Sciences and Health Services, IRAN
Background: Exercise is one of the most prevalent predisposing factors of bronchospasm. Its symptoms may be merely
due to physical activities. Clear understanding of exercise-induced bronchospasm is essential to eliminate complications
and achieve more effective treatment.
Materials and Methods: The study population consisted of Tehran soccer-players. In this clinical trial, four soccer clubs
were selected by cluster random sampling. The means of data collecting included history taking, physical examination,
and the performance of spirometry tests at rests as well as 5 and 12 minutes after exercise.
Results: One hundred soccer players were enrolled in this study with the mean age (±SD) of 20± 4.26 years old. The
mean values of FEV1±SD measured at 5 minutes before as well as 5 and 12 minutes after a ten-minute continuos
exercise were 4.15± 0.44, 4.13 ± 0.5, and 4.12 ± 0.49 liter respectively. These differences seem to be age related.12
minutes after exercise, 6 players have shown reduced FEV1 (15-17%) in respect of resting value (4.78 ± 0.52 vs. 3.57 ± 0.33).
Conclusion: The prevalence of exercise-induced bronchospasm was 6% in our study, comparable to 3-11% reported of
others. The lower prevalence of exercise- induced bronchospasm in our study may be due to older study group, negative
history of allergy and pulmonary diseases in our cases. (Tanaffos 2002; 1(2): 35-39)