Lung Function
Lung function was evaluated through spirometry pre and post 400mcg of salbutamol sulfate, by using the forced maneuver in the Masterscreen spirometer (Jaeger, Germany). The following parameters were analyzed [forced vital capacity (FVC), expired forced volume in the first second (FEV1), the relation FEV1/FVC, peak expiratory flow (PEF), MEF25%, MEF50%, MEF75%] [12].