Supine PositionSkullProne PositionPostureSuperficial Back MusclesSkull BasePatient PositioningHeadShoulderNeck MusclesAccessory NerveAccessory Nerve InjuriesSkull NeoplasmsSkull Base NeoplasmsBackSkull FracturesElectromyographyMyofascial Pain SyndromesScapulaMyalgiaBrachial Plexus NeuritisHead and Neck NeoplasmsTilt-Table TestNeck PainTrigger PointsShoulder PainMuscle, SkeletalHeart RateHead-Down TiltSupinationHypotension, OrthostaticShoulder JointMovementGravitationNephrostomy, PercutaneousNeckHead MovementsBlood PressureCumulative Trauma DisordersMuscular DiseasesBiomechanical PhenomenaRespiratory MechanicsBreath HoldingSkull Fracture, DepressedAutonomic Nervous System DiseasesAutonomic Nervous SystemRespirationIndoraminThoracic NervesFemur HeadValsalva ManeuverMusculoskeletal PainRestParietal BonePressureTomography, X-Ray ComputedSyncopeComputer TerminalsBaroreflexDizzinessTime FactorsHuman EngineeringParalysisSyncope, VasovagalMuscle ContractionHemodynamicsExpiratory Reserve VolumeCardiac OutputTidal VolumeRange of Motion, ArticularCraniocerebral TraumaLegSudden Infant DeathPulmonary Gas ExchangeNeck DissectionReference ValuesSympathetic Fibers, PostganglionicFluid ShiftsPalate, SoftTechnetium Tc 99m Aggregated AlbuminReproducibility of ResultsCranial SuturesLung Volume MeasurementsArmEsophagusEsophageal pH MonitoringIsometric ContractionBrachial PlexusPulmonary CirculationSperm HeadShoulder Impingement SyndromeRibsOxygenMagnetic Resonance ImagingSleepHead Injuries, ClosedPharynxThoracic WallSleep ParalysisOccipital Bone