Maximal Expiratory Flow RatePeak Expiratory Flow RateForced Expiratory Flow RatesMaximal Expiratory Flow-Volume CurvesVital CapacityResidual VolumeForced Expiratory VolumeRespiratory Function TestsLung Volume MeasurementsTotal Lung CapacitySpirometryAirway ObstructionAsthmaAirway ResistancePulmonary VentilationLungRespiratory MechanicsAlbuterolBronchodilator AgentsAdministration, InhalationIpratropiumBeclomethasoneNebulizers and VaporizersLung Diseases, ObstructiveAtropine DerivativesAsthma, Exercise-InducedAerosolsAnti-Asthmatic AgentsTerbutalineDouble-Blind MethodMaximal Midexpiratory Flow RateBronchitisDustBronchial Provocation TestsRespiration DisordersBudesonideRespiratory Tract DiseasesRespirationPregnenedionesCoughExpiratory Reserve VolumeBlood Flow VelocityRegional Blood FlowRespiratory Sounds