Supine PositionPostureProne PositionKnee JointPatient PositioningKneeOsteoarthritis, KneeArthroplasty, Replacement, KneeGravitationKnee ProsthesisKnee InjuriesLevobunololAcepromazineHeart RateRespirationMovementInteractive Ventilatory SupportRespiratory MechanicsBiomechanical PhenomenaIntra-Abdominal HypertensionTidal VolumePolysomnographyPressurePulmonary Gas ExchangeTilt-Table TestBlood PressureHead-Down TiltSleepSleep Apnea, ObstructiveIntraocular PressureSupinationHypotension, OrthostaticOxygenSleep Apnea SyndromesTime FactorsSwimmingRange of Motion, ArticularNephrostomy, PercutaneousSleep, REMElectromyographyElectric ImpedanceProspective StudiesReproducibility of ResultsAnalysis of VarianceMolecular Sequence DataAutonomic Nervous SystemIndoraminLegValsalva ManeuverKnee DislocationSyncopeBaroreflexAmino Acid SequenceDizzinessHemodynamicsBase SequenceTibiaAnterior Cruciate LigamentPatellaSyncope, VasovagalSudden Infant DeathHeadCardiac OutputExpiratory Reserve VolumeReference ValuesWeight-BearingFluid ShiftsMagnetic Resonance ImagingTreatment OutcomeLung Volume MeasurementsPalate, SoftEsophagusTechnetium Tc 99m Aggregated AlbuminPulmonary CirculationEsophageal pH MonitoringRestMenisci, TibialMedial Collateral Ligament, KneeArthralgiaJoint InstabilityCartilage, ArticularThoracic WallSleep ParalysisBlood Flow VelocityFunctional Residual CapacityBedsRibsInhalationLungDiaphragmPelvisPharynxCarbon DioxideRegional Blood FlowPlethysmographyAutonomic Nervous System DiseasesArthroscopyAirway ResistancePneumoperitoneum, ArtificialVentilators, Negative-Pressure