Abdominal MusclesMusclesMuscle ContractionMuscle, SkeletalRectus AbdominisMuscle ProteinsMuscle, SmoothRespiratory MusclesElectromyographyDiaphragmMuscle Fibers, SkeletalMuscle, Smooth, VascularMuscle DevelopmentMuscle FatigueIntercostal MusclesIntercostal NervesAbdominal WallPressureRespiratory MechanicsMuscle RelaxationAbdomenMuscle Fibers, Fast-TwitchMuscle DenervationMuscle Fibers, Slow-TwitchIsometric ContractionRespirationPostureMyocytes, Smooth MuscleMitochondria, MuscleInhalationNephropidaePositive-Pressure Respiration, IntrinsicOculomotor MusclesNeck MusclesPapillary MusclesMuscle SpindlesMuscle, StriatedAbdominal CavityLordosisThoraxBiomechanical PhenomenaMuscle WeaknessLaryngeal MusclesElectric StimulationHypercapniaQuadriceps MuscleMuscle CellsLumbosacral RegionExhalationMasseter MuscleMasticatory MusclesFacial MusclesMuscular AtrophyCoughTime FactorsPelvisDogsPhysical ExertionSatellite Cells, Skeletal MusclePulmonary VentilationMovementLung Volume MeasurementsPsoas MusclesMyofibrilsPectoralis MusclesRecruitment, NeurophysiologicalSupine PositionRabbitsAstacoideaMuscular DiseasesCalciumSpinePatient PositioningRats, Sprague-DawleyLow Back PainPhrenic NerveStomachExerciseSurgical FlapsHindlimb