title: FACTORS RELATED TO TOTAL ENERGY EXPENDITURE IN OLDER ADULTS (CHILE).
abstract: OBJECTIVE
  to asses Total Energy Expenditure (TEE) in healthy Chilean institutionalized or independently older people Methods: twenty seven young (27-30 years), 27 institutionalized (> 65 years old) and 27 free-living older (> 65 years old) participants were studied. Body composition was estimated by dual energy X-ray absorptiometry. Physical activity energy expenditure (AEE) and TEE were assessed using Actiheart accelerometers. The Mini Nutritional Assessment (MNA) was applied and Timed Up and Go (TUG) was measured.
  
  
  RESULTS
  AEE was 171, 320 and 497 kcal/day in institutionalized, free living older and young participants, respectively (p < 0.01 between young and older participants). Both absolute TEE and TEE/RMR was higher in young people. Multiple regression analysis accepted age, MNA and TUG as significant predictors of AEE (r2 = 0.24 p < 0.01).
  
  
  CONCLUSIONS
  AEE and PAL were lower among older people, with no differences by institutionalization.
authors.affiliation: Institute of Nutrition and Food Technology Dr.Fernando Monckeberg, University of Chile. Chile.. lleiva@inta.uchile.cl.
authors.forename: Tamara
authors.initials: T
authors.lastname: Pakozdi
authors.affiliation: Institute of Nutrition and Food Technology Dr.Fernando Monckeberg, University of Chile. Chile.. lleiva@inta.uchile.cl.
authors.forename: Laura
authors.initials: L
authors.lastname: Leiva
authors.affiliation: Institute of Nutrition and Food Technology Dr.Fernando Monckeberg, University of Chile. Chile.. lleiva@inta.uchile.cl.
authors.forename: Daniel
authors.initials: D
authors.lastname: Bunout
authors.affiliation: Institute of Nutrition and Food Technology Dr.Fernando Monckeberg, University of Chile. Chile.. lleiva@inta.uchile.cl.
authors.forename: Gladys
authors.initials: G
authors.lastname: Barrera
authors.affiliation: Institute of Nutrition and Food Technology Dr.Fernando Monckeberg, University of Chile. Chile.. lleiva@inta.uchile.cl.
authors.forename: María Pía
authors.initials: MP
authors.lastname: de la Maza
authors.affiliation: Institute of Nutrition and Food Technology Dr.Fernando Monckeberg, University of Chile. Chile.. lleiva@inta.uchile.cl.
authors.forename: Sandra
authors.initials: S
authors.lastname: Henriquez
authors.affiliation: Institute of Nutrition and Food Technology Dr.Fernando Monckeberg, University of Chile. Chile.. lleiva@inta.uchile.cl.
authors.forename: Sandra
authors.initials: S
authors.lastname: Hirsch
mesh_terms: D015502:Absorptiometry, Photon; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D001823:Body Composition; D002677:Chile / Q000453:epidemiology; D004734:Energy Metabolism / Q000502:physiology*; D015444:Exercise; D005260:Female; D006801:Humans; D008297:Male; D015596:Nutrition Assessment