Forced Expiratory Flow RatesPeak Expiratory Flow RateMaximal Expiratory Flow RateMaximal Midexpiratory Flow RateVital CapacityForced Expiratory VolumeRespiratory Function TestsAsthmaSpirometryPulmonary VentilationAlbuterolLungTotal Lung CapacityBronchodilator AgentsAirway ObstructionAirway ResistanceLung Volume MeasurementsFunctional Residual CapacityAdministration, InhalationRespiration DisordersMaximal Expiratory Flow-Volume CurvesLung Diseases, ObstructiveRespiratory MechanicsBronchial Provocation TestsRespiratory SoundsRespirationIpratropiumBeclomethasoneNebulizers and VaporizersAtropine DerivativesLung DiseasesAsthma, Exercise-InducedOccupational DiseasesAerosols