Abdominal MusclesMusclesSarcomeresMuscle ContractionMuscle ProteinsMuscle, SkeletalRectus AbdominisMuscle Fibers, SkeletalRespiratory MusclesElectromyographyMuscle, SmoothDiaphragmMyofibrilsMuscle, Smooth, VascularMuscle DevelopmentMuscle FatigueIntercostal MusclesIsometric ContractionIntercostal NervesMuscle RelaxationMuscle Fibers, Fast-TwitchAbdominal WallPressureConnectinRespiratory MechanicsAbdomenMuscle Fibers, Slow-TwitchMuscle DenervationPostureRespirationMyocytes, Smooth MuscleMitochondria, MuscleInhalationBiomechanical PhenomenaNephropidaePositive-Pressure Respiration, IntrinsicRana temporariaMuscle SpindlesNeck MusclesOculomotor MusclesPapillary MusclesPsoas MusclesMuscle, StriatedAbdominal CavityLordosisElectric StimulationThoraxMuscle WeaknessMuscle CellsLaryngeal MusclesQuadriceps MuscleLumbosacral RegionExhalationHypercapniaAnuraMasseter MuscleTime FactorsCalciumMyosin Heavy ChainsFacial MusclesMasticatory MusclesRabbitsMyocardiumCoughMyocardial ContractionMuscular AtrophyPelvisMovementMuscular DiseasesSatellite Cells, Skeletal MuscleRats, Sprague-DawleyPhysical ExertionRana pipiensDogsPulmonary VentilationPectoralis MusclesLung Volume MeasurementsRecruitment, NeurophysiologicalSupine PositionPatient PositioningSpineAstacoideaLow Back PainElasticityHindlimbPhrenic NerveCells, CulturedExerciseStomachPhysical StimulationSurgical Flaps