Peak Expiratory Flow RateForced Expiratory Flow RatesAsthmaMaximal Expiratory Flow RateForced Expiratory VolumeAlbuterolVital CapacityRespiratory Function TestsBronchodilator AgentsSpirometryAdministration, InhalationBeclomethasoneIpratropiumAtropine DerivativesNebulizers and VaporizersLungAirway ObstructionAnti-Asthmatic AgentsPulmonary VentilationAsthma, Exercise-InducedTerbutalineAerosolsMaximal Expiratory Flow-Volume CurvesLung Diseases, ObstructiveDouble-Blind MethodCell SizeBronchitisLung Volume MeasurementsBudesonideBronchial Provocation TestsDustRespiration DisordersRespiratory Tract DiseasesPregnenedionesLeukotriene AntagonistsCoughAir PollutantsTime FactorsAirway ResistanceHypertonic SolutionsFenoterolRespiratory MechanicsRespiratory SoundsOccupational DiseasesTotal Lung CapacityCircadian RhythmMaximal Midexpiratory Flow RateBlood VolumeAdrenergic beta-AgonistsClinical Trials as TopicAdrenal Cortex HormonesAcute DiseaseSodium-Potassium-Chloride SymportersCross-Over StudiesOccupational ExposureRespirationSolute Carrier Family 12, Member 2PrednisolonePhysical ExertionBumetanideProspective StudiesSodium Potassium Chloride Symporter InhibitorsGlucocorticoidsRandom AllocationHypotonic SolutionsChronic DiseaseTreatment OutcomeMethacholine ChlorideOsmotic PressureOsmosisOsmolar ConcentrationDyspneaBronchiBlood Flow VelocityOzoneDrug Therapy, CombinationExpiratory Reserve VolumeRegional Blood FlowDrug Administration ScheduleWater-Electrolyte BalanceSmokingLung DiseasesAlkaliesIndiaBronchial HyperreactivityCross-Sectional StudiesQuestionnairesRubidium RadioisotopesMagnetic Resonance ImagingEthanolaminesChloridesFunctional Residual CapacityResidual VolumeInspiratory CapacityTidal VolumeHeart RateAerosol PropellantsAndrostadienesSodiumOrgan Size