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Respiratory tract infection and bronchial responsiveness in elite athletes and sedentary control subjects
Author(s) -
Heir T.,
Aanestad G.,
Carlsen K. H.,
Larsen S.
Publication year - 1995
Publication title -
scandinavian journal of medicine and science in sports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.575
H-Index - 115
eISSN - 1600-0838
pISSN - 0905-7188
DOI - 10.1111/j.1600-0838.1995.tb00019.x
Subject(s) - medicine , methacholine , provocation test , athletes , respiratory tract , pulmonary function testing , respiratory system , asthma , respiratory tract infections , physical therapy , respiratory disease , lung , alternative medicine , pathology
To assess the effect of physical exercise during an acute respiratory tract infection (RTI) on bronchial responsiveness, methacholine bronchial challenge tests were performed prospectively in 19 nonasthmatic male crosscountry skiers and 22 healthy control subjects with minimal physical activity. Twelve skiers and 10 controls contracted RTI and were studied before and 1, 3 and 6 weeks after the onset of symptoms. The skiers were given no restrictions in their training routines during the period of illness. The geometric mean provocation concentration of methacholine causing a 10% fall in the forced expiratory volume in the first second (PC 10 ), was lower 1 week after onset of infection than at the initial test in the skiers. From the level at 1 week, PC 10 increased to levels at 3 and 6 weeks after infection. The PC 10 values at 3 and 6 weeks were not significantly different from the initial test. No significant changes in PC 10 occurred after infection in the control group. No significant changes in pulmonary function tests were found during the study period in either of the two groups. In conclusion, RTI was associated with a transient increase in bronchial responsiveness in athletes performing physical training during the symptomatic period of respiratory illness but not in nonactive control subjects.