Respiratory MusclesMuscle StrengthAbdominal MusclesIntercostal MusclesDiaphragmMuscle WeaknessMusclesBreathing ExercisesRespiratory MechanicsMuscle, SkeletalMuscle FatigueExhalationWork of BreathingMuscle Strength DynamometerInhalationPressureRespiratory Function TestsElectromyographyMuscle ContractionMuscle ProteinsMuscle, SmoothThoracic WallMaximal Voluntary VentilationRespirationLung Volume MeasurementsMuscle Fibers, SkeletalCoughPhysical EnduranceMuscle, Smooth, VascularDyspneaNeuromuscular DiseasesVital CapacityMuscle DevelopmentInspiratory CapacityHand StrengthIsometric ContractionQuadriceps MuscleTidal VolumePositive-Pressure Respiration, IntrinsicNeck MusclesMuscle Fibers, Fast-TwitchPulmonary Disease, Chronic ObstructiveResistance TrainingMuscle Fibers, Slow-TwitchMuscle DenervationExercise ToleranceRespiratory ParalysisCarbon DioxideMuscular Diseases