Maximal Expiratory Flow-Volume CurvesForced Expiratory VolumeLung Volume MeasurementsRespiratory Function TestsVital CapacitySpirometryLungBlood VolumeAsthmaBronchial Provocation TestsForced Expiratory Flow RatesBronchodilator AgentsPulmonary Disease, Chronic ObstructiveBlood Flow VelocityLung Diseases, ObstructiveAdministration, InhalationMaximal Expiratory Flow RateMethacholine ChlorideAirway ObstructionPeak Expiratory Flow RateAlbuterolBronchoconstrictor AgentsMaximal Midexpiratory Flow RateRegional Blood FlowResidual VolumeBronchoconstrictionPulsatile FlowAsthma, Exercise-InducedBronchial HyperreactivityVertebral ArteryDyspneaCarotid Artery, ExternalDouble-Blind MethodPulmonary EmphysemaTotal Lung CapacityCystic FibrosisRespiration DisordersScopolamine DerivativesUltrasonography, Doppler, ColorBronchitisReference ValuesAirway ResistancePulmonary VentilationNebulizers and VaporizersSputumPulmonary Diffusing CapacityAnti-Asthmatic AgentsBudesonideInspiratory CapacityCross-Over StudiesLung DiseasesUltrasonography, Doppler, DuplexRespiratory MechanicsProspective StudiesSmokingReproducibility of ResultsIpratropiumSeverity of Illness IndexCerebrovascular CirculationUltrasonography, DopplerLaryngeal DiseasesEthanolaminesBronchiFunctional Residual CapacityTime FactorsExercise ToleranceDustArea Under CurveAerosolsRespiratory SoundsTreatment OutcomeBeclomethasoneRespiratory MusclesEchocardiography, Doppler, ColorHemorheologyBreath TestsROC CurveCoughRespirationEmphysemaBronchiectasisBronchospirometryOccupational ExposureExercise TestTerbutalineExpiratory Reserve VolumeFenoterolCross-Sectional StudiesAdrenal Cortex HormonesPneumonectomyAdrenergic beta-Agonists