Work of BreathingRespirationMouth BreathingRespiratory MechanicsBreathing ExercisesSleep Apnea SyndromesTidal VolumePulmonary VentilationInhalationWorkApneaCarbon DioxideRespiratory Physiological PhenomenaPolysomnographyOxygenIntermittent Positive-Pressure BreathingRespiratory RateRespiratory MusclesDiaphragmAirway ResistanceHeliumSnoringExhalationAnoxiaRespiratory CenterHyperventilationRespiratory Function TestsSleep Apnea, CentralChemoreceptor CellsAirVentilator WeaningPulmonary Gas ExchangeSleep Apnea, ObstructiveSleepBlood Gas AnalysisRespiration, ArtificialTime FactorsFetal MovementPlethysmographyCheyne-Stokes RespirationPlethysmography, Whole BodyAir PressureAirway ObstructionRespiration DisordersLungLung Volume MeasurementsThoraxPartial PressureRespiratory InsufficiencyQuestionnairesPositive-Pressure RespirationWakefulnessHeart RateOximetryPeriodicityRespiratory Dead SpaceSleep StagesOxygen ConsumptionIntercostal MusclesDecompression SicknessPhrenic NerveRisk FactorsElectromyographyRespiratory Protective DevicesCross-Sectional StudiesRespiratory SystemWork Schedule ToleranceHyperoxiaFunctional Residual CapacityHypoventilationPrevalenceAerosolsWork Capacity EvaluationLung ComplianceOxygen Inhalation TherapyAdenoidectomyRespiratory-Gated Imaging TechniquesThoracic WallLung Diseases, ObstructiveRespiratory TherapyAbdominal MusclesInspiratory CapacityMasksBlood PressureSpirometryTonsillectomyReturn to WorkDivingVagotomyPressureAir Pollutants, OccupationalPulmonary Stretch ReceptorsMedulla OblongataMovementProspective StudiesLarynxExercisePharynxPostureContinuous Positive Airway Pressure