FACTORS RELATED TO TOTAL ENERGY EXPENDITURE IN OLDER ADULTS (CHILE)

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.AEE was 171, 320 and 497 kcal/day in institutionalized, free living older and young participants, respectively (p0.01 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 p0.01).AEE and PAL were lower among older people, with no differences by institutionalization.Objetivo: evaluar el Gasto Energético Total (GET) en ancianos sanos que viven institucionalizados o independientes en Chile. Método: se evaluaron veintisiete jovenes (27-30 años), 27 adultos mayores institucionalizados (65 años ) y 27 ancianos independientes (65 años). Se midió la composición corporal utilizando absorciometría bifotónica de rayos X. Se calculó el gasto energético por actividad física (GEAF) y el gasto energético total (GET) utilizando acelerómetros Actiheart; se aplicó Mini Nutritional Assessment (MNA) y se midió el Timed Up and Go (TUG). Resultados: el GEAF fue 171, 320 y 497 kcal/día en ancianos institucionalizados, independientes y jóvenes, respectivamente (p.