PlethysmographyPlethysmography, Whole BodyPlethysmography, ImpedanceMouthForearmWhole Body ImagingRegional Blood FlowLegAirway ResistanceVasodilationRespiratory MechanicsNitroprussideRespirationomega-N-MethylarginineThoraxLung Volume MeasurementsVeinsTidal VolumeMouth FloorVasodilator AgentsHyperemiaVascular ResistancePulmonary VentilationTotal Lung CapacityMethacholine ChlorideBlood PressureMuscle, SkeletalThoracic WallFunctional Residual CapacityVenous PressureInfusions, Intra-ArterialBody CompositionMouth DiseasesHand-Arm Vibration SyndromeVenous InsufficiencyRespiratory Function TestsWhole-Body CountingMouth MucosaVascular CapacitanceAcetylcholinePostphlebitic SyndromeBlood Flow VelocityHeart RateVibrationPostureTime FactorsEndothelium, VascularHemodynamicsExerciseLungCross-Over StudiesThrombophlebitisPhlebographyAnalysis of VarianceBronchoconstrictor AgentsReference ValuesBrachial ArteryAirway ObstructionVasoconstrictionInhalationOxygen ConsumptionReproducibility of ResultsBody WeightMouth NeoplasmsRespiratory MusclesResidual VolumeAirSpirometryDose-Response Relationship, DrugAbsorptiometry, PhotonAdipose TissueBlood VolumeBlood CirculationHypercapniaNitric OxideFemoral VeinFluid ShiftsPopliteal VeinDouble-Blind MethodBody TemperatureMouthwashesInsulinMouth, EdentulousBody Temperature RegulationSplanchnic CirculationAbdomenVasoconstrictor AgentsApneaLower Body Negative PressureSensitivity and SpecificitySympathetic Nervous SystemDiaphragmWhole-Body IrradiationXerostomiaAnoxiaBody WaterSkinSupine PositionHeliumBed Rest