Work of BreathingStress, MechanicalRespirationMouth BreathingRespiratory MechanicsBreathing ExercisesTidal VolumeSleep Apnea SyndromesMechanical ProcessesRespiration, ArtificialBiomechanical PhenomenaPulmonary VentilationInhalationApneaMechanical PhenomenaCarbon DioxideRespiratory Physiological PhenomenaVentilator WeaningOxygenDiaphragmPolysomnographyRespiratory MusclesIntermittent Positive-Pressure BreathingAirway ResistanceRespiratory RateMechanotransduction, CellularElasticityHeliumPhysical StimulationExhalationRespiratory InsufficiencyAnoxiaSnoringRespiratory CenterTensile StrengthHyperventilationPulmonary Gas ExchangePositive-Pressure RespirationRespiratory Function TestsTime FactorsElastic ModulusPressureAirBlood Gas AnalysisSleep Apnea, CentralAir PressureChemoreceptor CellsLungVentilators, MechanicalLung Volume MeasurementsSleep Apnea, ObstructiveCompressive StrengthThoraxPlethysmographyAirway ObstructionLung ComplianceFetal MovementSleepCheyne-Stokes RespirationPartial PressureHyperalgesiaModels, BiologicalPlethysmography, Whole BodyEquipment DesignElectromyographyMaterials TestingRespiratory Dead SpaceRespiration DisordersIntercostal MusclesTracheostomyIntubation, IntratrachealPeriodicityHeart RateOximetryMechanoreceptorsMechanicsPhrenic NerveFunctional Residual CapacityOxygen ConsumptionRespiratory SystemRats, Sprague-DawleyWeight-BearingWakefulnessMuscle ContractionSleep StagesDecompression SicknessHyperoxiaHypoventilationOxygen Inhalation TherapyAerosolsRespiratory TherapyRespiratory Protective DevicesAbdominal MusclesReflexMovementLung Diseases, ObstructiveThoracic WallPulmonary Stretch ReceptorsRespiratory-Gated Imaging TechniquesBlood Pressure