Respiratory MusclesDiaphragmBreathing ExercisesWork of BreathingMusclesIntercostal MusclesMuscle WeaknessRespiratory MechanicsMaximal Voluntary VentilationMuscle FatigueInhalationAbdominal MusclesRespiratory Function TestsAirway ResistanceMuscle StrengthMuscle, SkeletalNeuromuscular DiseasesRespirationMuscle, SmoothAirway ObstructionMuscle ContractionMuscle ProteinsInspiratory CapacityAirway RemodelingVital CapacityMuscle Fibers, SkeletalRespiratory ParalysisLung Volume MeasurementsDyspneaPulmonary VentilationPressureMuscle, Smooth, VascularRespiratory InsufficiencyElectromyographyMuscle DevelopmentLung Diseases, ObstructiveRespiratory SystemLungPhysical EnduranceSpirometryVentilator WeaningAir PressureRespiratory Physiological PhenomenaThoraxExercise ToleranceHypercapniaTidal VolumeRespiration, ArtificialMaximal Expiratory Flow RatePhrenic NerveNeck MusclesForced Expiratory VolumePulmonary Disease, Chronic ObstructiveResidual VolumeMuscular DiseasesTotal Lung CapacityRibsThoracic WallMuscle Fibers, Fast-TwitchBronchiMuscle DenervationMyocytes, Smooth MuscleOxygen ConsumptionHypoventilationMuscle Fibers, Slow-TwitchMuscular AtrophyRespiration DisordersRespiratory TherapyQuadriceps MuscleExercise TestMitochondria, MuscleCarbon DioxideXiphoid BoneExercisePulmonary Gas ExchangeBronchial HyperreactivityMuscle RelaxationQuadriplegiaOculomotor MusclesLung ComplianceHyperventilationBlood Gas AnalysisGymnasticsFunctional Residual CapacityAirway ManagementMuscle, StriatedRespiratory MucosaExhalationCoughPlethysmography, ImpedanceRectus AbdominisMuscle SpindlesPhysical ExertionTime FactorsPositive-Pressure RespirationAsthmaPain, ReferredMuscular Dystrophy, DuchenneInsufflationChlorfenvinphos