Whole Body ImagingPlethysmography, Whole BodyFocus GroupsWhole-Body CountingMuscle, SkeletalVibrationBody CompositionWhole-Body IrradiationEnergy MetabolismLeucineHeat Stress DisordersGlucoseAbsorptiometry, PhotonInsulinBody WeightHyperthermia, InducedAdipose TissueOxygen ConsumptionLiverExerciseBody Temperature RegulationBlood GlucoseBody TemperatureRadiation DosageTime FactorsPhysical EnduranceGlucose Clamp TechniqueTissue DistributionFatty Acids, NonesterifiedInsulin ResistanceModels, BiologicalRegional Blood FlowPotassium RadioisotopesProteinsCalorimetry, IndirectBone DensityLipid MetabolismRadiometryLegGlycogenOxidation-ReductionKineticsPhenylalanineSkinPositron-Emission TomographyDietNitrogenRadiation Injuries, ExperimentalMuscle ProteinsRadiopharmaceuticalsRadiation-Protective AgentsSplanchnic CirculationMagnetic Resonance ImagingHomeostasisBody Fluid CompartmentsDose-Response Relationship, RadiationSweatGamma RaysFastingMetabolic Clearance RateWeight LiftingBed RestBody BurdenReference ValuesHormonesBody WaterIodine RadioisotopesHuman BodyMice, Inbred C57BLObesityOrgan SizeRats, Sprague-DawleyNitrogen IsotopesLipolysisRadioisotope Dilution TechniqueSweatingVisceraPhysical ExertionFluorodeoxyglucose F18PlutoniumAgingRotationAnalysis of VarianceSensitivity and SpecificityAmino AcidsBrainGlycerolTooth SocketRheniumHot TemperatureCarbon DioxideOrgan SpecificityEatingPostureLactic AcidCold TemperatureReproducibility of ResultsBlood CirculationAdaptation, PhysiologicalDeuterium