Abdominal MusclesMyofibrilsMusclesMuscle ProteinsMuscle, SkeletalMuscle ContractionRectus AbdominisMuscle, SmoothRespiratory MusclesElectromyographyDiaphragmMuscle Fibers, SkeletalMuscle DevelopmentMuscle, Smooth, VascularMuscle FatigueIntercostal MusclesSarcomeresMuscle Fibers, Fast-TwitchIntercostal NervesAbdominal WallMuscle RelaxationPressureRespiratory MechanicsAbdomenMuscle DenervationMuscle Fibers, Slow-TwitchIsometric ContractionMitochondria, MusclePsoas MusclesConnectinPostureRespirationMuscle, StriatedMyocytes, Smooth MuscleInhalationNephropidaePositive-Pressure Respiration, IntrinsicRabbitsNeck MusclesOculomotor MusclesPapillary MusclesAbdominal CavityMuscle SpindlesActininBiomechanical PhenomenaLordosisThoraxMuscle WeaknessMyocardiumTroponinLaryngeal MusclesPectoralis MusclesElectric StimulationQuadriceps MuscleLumbosacral RegionMuscle CellsExhalationHypercapniaActinsMasseter MuscleMyosinsCalciumMuscular AtrophyTroponin CDesminFacial MusclesMasticatory MusclesMuscular DiseasesTime FactorsCoughPelvisDogsMicroscopy, ElectronSatellite Cells, Skeletal MusclePhysical ExertionPulmonary VentilationTropomyosinMovementChickensCells, CulturedLung Volume MeasurementsRecruitment, NeurophysiologicalSupine PositionMyosin SubfragmentsRats, Sprague-DawleyMyosin Heavy ChainsPatient PositioningSpineAstacoideaLow Back PainPhrenic NerveAdenosine TriphosphatasesExerciseStomachSurgical Flaps