Total Lung CapacityVital CapacityLungResidual VolumeLung Volume MeasurementsRespiratory Function TestsForced Expiratory VolumeSpirometryFunctional Residual CapacityPulmonary Diffusing CapacityLung DiseasesRespiratory MechanicsMaximal Expiratory Flow RatePulmonary EmphysemaInspiratory CapacityForced Expiratory Flow RatesLung Diseases, ObstructiveLung ComplianceRespiratory MusclesPulmonary VentilationPulmonary Disease, Chronic ObstructiveInhalationMaximal Expiratory Flow-Volume CurvesPlethysmography, Whole BodyMaximal Midexpiratory Flow RateHeliumAirway ObstructionAirway ResistanceLung NeoplasmsPlethysmographyPulmonary FibrosisLung Diseases, InterstitialDiaphragmDyspneaRespirationPulmonary Gas ExchangeTidal VolumeEmphysemaPeak Expiratory Flow RateRespiratory Physiological PhenomenaBronchodilator AgentsAsthmaBronchoconstrictor AgentsPneumonectomyMethacholine ChlorideExercise ToleranceThoraxSmokingPulmonary AlveoliLung InjuryLung TransplantationDivingPressureCarcinoma, Non-Small-Cell LungTomography, X-Ray ComputedAdministration, InhalationRespiration DisordersBronchial Provocation TestsCarbon MonoxideExercise TestAerosolsExhalationOxygenAlbuterolBronchoconstrictionThoracic WallBronchiThoracoscopyTime FactorsExpiratory Reserve VolumeReference ValuesSeverity of Illness IndexAcute Lung InjuryBronchoalveolar Lavage FluidRadiography, ThoracicIdiopathic Pulmonary FibrosisMaximal Voluntary VentilationBreath TestsProspective StudiesBlood Gas AnalysisTreatment OutcomeAnalysis of VarianceBronchitisDustPulmonary CirculationCarbon DioxideCapacity BuildingBody HeightFollow-Up StudiesAir PressureRespiratory ParalysisCystic FibrosisLinear ModelsSupine PositionCase-Control StudiesPneumoconiosisRetrospective StudiesOccupational ExposureReproducibility of ResultsNeuromuscular Diseases