Body CompositionAbsorptiometry, PhotonElectric ImpedanceAdipose TissueBody WaterBody WeightAnthropometrySkinfold ThicknessEnergy MetabolismBody Mass IndexObesityAdiposityBody Fluid CompartmentsBasal MetabolismEnergy IntakeWeight LossWeight GainBody Fat DistributionDietAgingExerciseBone DensityBody HeightNutritional StatusPhysical FitnessDietary ProteinsLipidsDiet, ReducingRegression AnalysisCalorimetry, IndirectBody ConstitutionMuscle, SkeletalLeptinDeuterium OxideCross-Sectional StudiesIndicator Dilution TechniquesDensitometryEatingOverweightReproducibility of ResultsGrowthMuscle StrengthLongitudinal StudiesLinear ModelsLipid MetabolismBlood GlucoseSex CharacteristicsTime FactorsSex FactorsFatty AcidsSarcopeniaDietary FatsHuman Growth HormoneBody Weights and MeasuresMotor ActivityPubertySwineAnalysis of VarianceProspective StudiesInsulin