Body CompositionElectric ImpedanceAbsorptiometry, PhotonAdipose TissueBody WaterBody WeightAnthropometrySkinfold ThicknessEnergy MetabolismBody Mass IndexObesityBody Fluid CompartmentsAdiposityEnergy IntakeBasal MetabolismWeight LossWeight GainDietBody Fat DistributionRisk AssessmentNutritional StatusBone DensityAgingExerciseBody HeightPhysical FitnessDietary ProteinsLipidsReproducibility of ResultsDiet, ReducingCalorimetry, IndirectRegression AnalysisMuscle, SkeletalLeptinDeuterium OxideBody ConstitutionIndicator Dilution TechniquesCross-Sectional StudiesDensitometryEatingOverweight