Respiratory MusclesDiaphragmBreathing ExercisesMuscle StrengthWork of BreathingMusclesMuscle WeaknessIntercostal MusclesMaximal Voluntary VentilationMuscle FatigueAbdominal MusclesRespiratory MechanicsInhalationMuscle, SkeletalNeuromuscular DiseasesRespiratory Function TestsRespirationMuscle ContractionMuscle ProteinsInspiratory CapacityMuscle, SmoothMuscle Fibers, SkeletalRespiratory ParalysisVital CapacityDyspneaMuscle, Smooth, VascularPressureLung Volume MeasurementsElectromyographyRespiratory InsufficiencyPulmonary VentilationMuscle DevelopmentTensile StrengthPhysical EnduranceVentilator WeaningLung Diseases, ObstructiveExercise ToleranceHypercapniaThoraxHand StrengthSpirometryNeck MusclesMaximal Expiratory Flow RatePhrenic NerveMuscular DiseasesTidal VolumeRespiration, ArtificialRibsAir PressureMuscle Fibers, Fast-TwitchQuadriceps MuscleThoracic WallMuscle DenervationResidual VolumeRespiratory Physiological PhenomenaOxygen ConsumptionMuscle Fibers, Slow-TwitchMuscular AtrophyTotal Lung CapacityHypoventilationPulmonary Disease, Chronic ObstructiveExerciseShear StrengthExercise TestMyocytes, Smooth MuscleAirway ResistanceXiphoid BoneMitochondria, MuscleRespiration DisordersForced Expiratory VolumeGymnasticsCarbon DioxideRespiratory TherapyQuadriplegiaOculomotor MusclesTime FactorsPhysical ExertionMuscle, StriatedRectus AbdominisLungExhalationMuscle SpindlesPulmonary Gas ExchangePlethysmography, ImpedanceMuscle RelaxationMuscular Dystrophy, DuchenneMuscle Strength DynamometerSupinationPain, ReferredBlood Gas AnalysisBicyclingLegHyperventilationPapillary MusclesChlorfenvinphosIsometric ContractionElectric StimulationMuscular DystrophiesInsufflationFunctional Residual Capacity