SpirometryReference ValuesVital CapacityRespiratory Function TestsForced Expiratory VolumeRespiratory Physiological PhenomenaLung Volume MeasurementsBody HeightLungLung DiseasesWalkingCross-Sectional StudiesPulmonary Disease, Chronic ObstructiveReference StandardsAsthmaBronchodilator AgentsAirway ObstructionLung Diseases, ObstructiveReproducibility of ResultsMaximal Midexpiratory Flow RateForced Expiratory Flow RatesOscillometryMathematicsPeak Expiratory Flow RateDyspneaPulmonary MedicineAirway ResistanceModels, BiologicalSmokingRespiration DisordersRespiratory Tract DiseasesSeverity of Illness IndexSensitivity and SpecificityAlgorithmsBronchial Provocation TestsBronchospirometryMaximal Expiratory Flow RatePredictive Value of TestsPulmonary Diffusing CapacityRegression AnalysisOccupational ExposureExhalationPlethysmography, Whole BodyQuestionnairesModels, TheoreticalRespiratory TherapyOccupational DiseasesTime FactorsTotal Lung CapacityBreathing ExercisesRespiratory SoundsDustProspective StudiesCoughBreath TestsLinear ModelsPrimary Health CareAlbuterolMethacholine ChlorideResidual VolumeAdministration, Inhalation