SarcopeniaCachexiaMuscular AtrophyMuscle, SkeletalAgingWasting SyndromeMuscle StrengthMuscle WeaknessAnorexiaAppetite StimulantsHand StrengthIndependent LivingBody CompositionFrail ElderlyBody WeightTerminology as TopicMyostatinMuscular Disorders, AtrophicMuscle ProteinsElder Nutritional Physiological PhenomenaMuscular DiseasesMegestrol AcetateGeriatric AssessmentOrgan SizeMuscle Fibers, SkeletalAbsorptiometry, PhotonCaloric RestrictionMobility LimitationAging, Premature