Abdominal MusclesMusclesRectus AbdominisDiaphragmElectromyographyRespiratory MusclesMuscle ContractionSkinMuscle, SkeletalIntercostal NervesAbdominal WallMuscle ProteinsAbdomenIntercostal MusclesMuscle, SmoothRespiratory MechanicsPressureMuscle FatigueMuscle Fibers, SkeletalMuscle, Smooth, VascularRespirationPosturePositive-Pressure Respiration, IntrinsicInhalationNephropidaeMuscle DevelopmentAbdominal CavityLordosisThoraxLaryngeal MusclesMuscle RelaxationExhalationSkin AgingSkin DiseasesHypercapniaLumbosacral RegionIsometric ContractionSkin NeoplasmsCoughMuscle Fibers, Fast-TwitchMuscle DenervationPelvisMuscle Fibers, Slow-TwitchPulmonary VentilationBiomechanical PhenomenaMyocytes, Smooth MuscleLung Volume MeasurementsPatient PositioningMitochondria, MuscleSupine PositionSpineLow Back PainElectric StimulationSurgical FlapsAstacoidea