Pulmonary function and airway responsiveness in young competitive swimmers
Pediatric Pulmonology, 03/30/2012
Silvestri M et al. – Intense swimming activity may cause a greater than normal lung growth, irrespective of the presence of allergic sensitization or airway hyperresponsiveness.
Forced expiratory volume in 1sec (FEV1), forced vital capacity (FVC), airway responsiveness, and skin prick test were measured in 34 children/adolescents (age: 7–19yrs old) trained for competitive swimming.
Their “lifetime” exposure, i.e., the hours spent in pool was very strongly correlated with their age at the time of study.
The effect of swimming activity was therefore estimated from the relationships between lung function data and age.
FVC Z-score was positively correlated with age, indicating that absolute values increased more than expected with normal growth, but FEV1/FVC was negatively correlated with age.
Although the majority of subjects had allergic sensitization to aeroallergens and about one half had asthma-like symptoms and/or airway hyperresponsiveness, these conditions did not alter the relationships between lung function and age.
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