Respiratory MusclesDiaphragmBreathing ExercisesWork of BreathingMusclesIntercostal MusclesMuscle WeaknessMaximal Voluntary VentilationMuscle FatigueAbdominal MusclesRespiratory MechanicsInhalationMuscle StrengthMuscle, SkeletalNeuromuscular DiseasesRespiratory Function TestsRespirationMuscle ProteinsMuscle ContractionMuscle, SmoothInspiratory CapacityMuscle Fibers, SkeletalRespiratory ParalysisVital CapacityDyspneaMuscle, Smooth, VascularLung Volume MeasurementsRespiratory InsufficiencyPressureElectromyographyPulmonary VentilationMuscle DevelopmentPhysical EnduranceVentilator WeaningLung Diseases, ObstructiveExercise ToleranceHypercapniaThoraxSpirometryNeck MusclesMaximal Expiratory Flow RatePhrenic NerveTidal VolumeMuscular DiseasesRibsRespiration, ArtificialAir PressureThoracic WallMuscle Fibers, Fast-TwitchMuscle DenervationResidual VolumeRespiratory Physiological PhenomenaOxygen ConsumptionHypoventilationMuscle Fibers, Slow-TwitchTotal Lung CapacityMuscular AtrophyPulmonary Disease, Chronic ObstructiveQuadriceps MuscleMyocytes, Smooth MuscleAirway ResistanceMitochondria, MuscleExercise TestXiphoid BoneExerciseRespiration DisordersForced Expiratory VolumeRespiratory TherapyCarbon DioxideOculomotor MusclesQuadriplegiaGymnasticsMuscle, StriatedLungPulmonary Gas ExchangeExhalationPlethysmography, ImpedanceRectus AbdominisMuscle SpindlesMuscle RelaxationPhysical ExertionPain, ReferredBlood Gas AnalysisHyperventilationChlorfenvinphosMuscular Dystrophy, DuchennePapillary MusclesSupinationBicyclingInsufflationMuscular DystrophiesFunctional Residual CapacityLegTime FactorsMuscle CellsPostpoliomyelitis SyndromeCoughMeconium Aspiration SyndromeElectric StimulationMasseter Muscle