Body CompositionElectric ImpedanceAbsorptiometry, PhotonBody Mass IndexWeight LossWeight GainBody WeightObesityLongitudinal StudiesProspective StudiesExerciseAdipose TissueFollow-Up StudiesBody WaterRisk FactorsAnthropometrySkinfold ThicknessCohort StudiesEnergy MetabolismAdiposityBody Fluid CompartmentsEnergy IntakeBasal MetabolismRisk AssessmentDietBody Fat DistributionAgingNutritional StatusBone DensityTime FactorsReproducibility of ResultsPhysical FitnessLipidsRegression AnalysisBody HeightDiet, ReducingDietary ProteinsMuscle, SkeletalCross-Sectional StudiesTreatment OutcomeCalorimetry, IndirectLeptinBody ConstitutionDeuterium OxideIndicator Dilution TechniquesOverweightEatingDensitometryLinear ModelsBlood Glucose