Vital CapacityForced Expiratory VolumeRespiratory Function TestsSpirometryForced Expiratory Flow RatesTotal Lung CapacityMaximal Midexpiratory Flow RateLungResidual VolumePulmonary Diffusing CapacityLung Volume MeasurementsMaximal Expiratory Flow RateLung Diseases, ObstructivePulmonary VentilationInspiratory CapacityRespiratory MusclesMaximal Expiratory Flow-Volume CurvesFunctional Residual CapacityRespiration DisordersLung DiseasesPulmonary Disease, Chronic ObstructiveRespiratory MechanicsPeak Expiratory Flow RateAirway ObstructionAsthmaTime FactorsInhalationBronchodilator AgentsExpiratory Reserve VolumeRespirationMaximal Voluntary VentilationDyspneaAirway ResistanceMethacholine ChloridePulmonary EmphysemaSmokingIdiopathic Pulmonary FibrosisBronchoconstrictor AgentsBronchial Provocation TestsAdministration, InhalationExercise ToleranceRespiratory ParalysisBronchitisDustTidal VolumeProspective StudiesPulmonary FibrosisExercise TestScoliosisLung Diseases, InterstitialNeuromuscular DiseasesAlbuterolTreatment OutcomePlethysmography, Whole BodyPulmonary Gas ExchangeReproducibility of ResultsRespiratory Physiological PhenomenaReference ValuesOccupational ExposurePneumoconiosisRespiratory TherapyScopolamine DerivativesSeverity of Illness IndexCross-Sectional StudiesDouble-Blind MethodThoraxRespiratory InsufficiencyModels, BiologicalHeliumOxygenCystic FibrosisFollow-Up StudiesDivingRespiratory Tract DiseasesAnalysis of VarianceBreathing ExercisesScleroderma, SystemicCoughRegression AnalysisOccupational DiseasesIpratropiumQuadriplegiaStatistics, NonparametricBronchiectasisLinear ModelsLung ComplianceFenoterolOxygen ConsumptionKineticsAlgorithmsCarbon DioxidePulmonary AtelectasisThoracoplastyAerosolsRetrospective StudiesPredictive Value of TestsPostoperative PeriodPlethysmographyBronchospirometryDose-Response Relationship, Drug