Abdominal MusclesRectus AbdominisMusclesOculomotor MusclesElectromyographyDiaphragmRespiratory MusclesMuscle ContractionCampylobacter rectusMuscle, SkeletalAbdominal WallIntercostal NervesAbdomenMuscle ProteinsMuscle, SmoothIntercostal MusclesPressureRespiratory MechanicsMuscle Fibers, SkeletalMuscle FatiguePostureMuscle, Smooth, VascularRespirationPositive-Pressure Respiration, IntrinsicInhalationNephropidaeMuscle DevelopmentStrabismusAbdominal CavityLordosisExotropiaThoraxOphthalmologic Surgical ProceduresLaryngeal MusclesSurgical FlapsMuscle RelaxationIsometric ContractionOrbitExhalationHypercapniaQuadriceps MuscleBiomechanical PhenomenaLumbosacral RegionEsotropiaCoughMuscle Fibers, Fast-TwitchMuscle DenervationMuscle Fibers, Slow-TwitchPelvisPulmonary VentilationDiplopiaElectric StimulationMyocytes, Smooth MuscleLung Volume MeasurementsMitochondria, MuscleNeck MusclesPatient PositioningMovementSupine PositionRecruitment, NeurophysiologicalLow Back PainSpineAstacoidea