Valsalva ManeuverVertigoPosturePulmonary AtelectasisRespiratory MechanicsPatient PositioningPositive-Pressure RespirationHemostasis, SurgicalHeimlich ManeuverFlight, AnimalInhalationRespirationLung Volume MeasurementsRespiratory Distress Syndrome, AdultTidal VolumePulmonary Gas ExchangePressureExhalationNystagmus, PathologicVideo RecordingDizzinessSpirometrySemicircular CanalsSupine PositionPulmonary VentilationDiaphragmHead MovementsVital CapacityIntubation, IntratrachealBiomechanical PhenomenaTotal Lung CapacityRespiratory MusclesInspiratory CapacityHepatectomyCapnographyAirway ObstructionAutonomic Nervous SystemBlood PressureButylscopolammonium BromideHeart RateRespiration, ArtificialBetahistineForced Expiratory Flow RatesSurgical TapeHemodynamicsDeglutitionHeart Septal Defects, AtrialLaryngoscopesRespiratory Function TestsCoriolis ForceReflex, OculocardiacRespiratory TherapyNystagmus, PhysiologicLung ComplianceThoraxPhysical Therapy ModalitiesForced Expiratory VolumeFunctional Residual CapacityTime FactorsMovementProspective StudiesTreatment OutcomePhysical PhenomenaKinesiology, AppliedVitreoretinal SurgeryEsophageal Sphincter, UpperHypotension, OrthostaticOrthopteraUltrasonography, Doppler, TranscranialColonoscopesLarynxBaroreflexReflexAutonomic Nervous System DiseasesLaryngoscopyEscape ReactionTilt-Table TestPelvic FloorEmbolism, ParadoxicalSystolic MurmursPalate, SoftBlood Gas AnalysisMaximal Voluntary VentilationOtolithic MembraneRespiratory Physiological PhenomenaSyncope, VasovagalMaximal Expiratory Flow-Volume CurvesSwimmingExercise Movement TechniquesPhysical ExaminationNedocromilBreathing ExercisesMantodeaElectromyographyChest Wall OscillationEsophagusEquipment DesignExpiratory Reserve VolumePharynxLung