Respiratory MusclesMuscle WeaknessNeuromuscular DiseasesDiaphragmRespiratory ParalysisInspiratory CapacityVital CapacityRespiratory Function TestsBreathing ExercisesRespiratory InsufficiencyMusclesWork of BreathingIntercostal MusclesMuscle FatigueMuscle, SkeletalMuscle StrengthMaximal Voluntary VentilationAbdominal MusclesRespiratory MechanicsInhalationMuscle ContractionRespirationMuscle ProteinsMuscle Fibers, SkeletalMuscle, SmoothMuscular DiseasesElectromyographyDyspneaLung Volume MeasurementsPressureMuscle, Smooth, VascularPulmonary VentilationSeverity of Illness IndexMuscle DevelopmentPhysical EnduranceMuscular AtrophyExercise ToleranceLung Diseases, ObstructiveVentilator WeaningMyopathies, NemalineHypercapniaRespiration, ArtificialThoraxSpirometryQuadriceps MuscleMuscle Fibers, Fast-TwitchNeck MusclesMuscle Fibers, Slow-TwitchPhrenic NerveMaximal Expiratory Flow RateHypoventilationTidal VolumeRibsAir PressureMuscular DystrophiesThoracic WallOxygen ConsumptionPulmonary Disease, Chronic ObstructiveMuscle DenervationResidual VolumeMuscular Dystrophy, DuchenneMitochondria, MuscleRespiratory Physiological PhenomenaTotal Lung CapacityQuadriplegiaExercise TestExerciseForced Expiratory VolumeAirway ResistanceMyocytes, Smooth MuscleXiphoid BoneRespiration DisordersPostpoliomyelitis SyndromeLungMyositisOculomotor MusclesCarbon DioxideRespiratory TherapyTime FactorsInsufflationPolymyositisIsometric ContractionGymnasticsPulmonary Gas ExchangeExhalationMuscle, StriatedPlethysmography, ImpedanceRectus AbdominisPhysical ExertionMuscle SpindlesMice, Inbred mdxMuscle RelaxationBlood Gas AnalysisPain, ReferredHyperventilationSupinationChlorfenvinphosPapillary MusclesBicyclingMotor Neurons