title: Short-term effect of physical activity and obesity on disability in a sample of rural elderly in Mexico.
abstract: OBJECTIVE
  To estimate the effects of physical activity (PA) and obesity on the cumulative incidence of disability on the basic activities of daily living in the elderly.
  
  
  METHODS
  Longitudinal study. We selected 2477 participants aged 65-74 years from the impact evaluation study of a non-contributory pension program in Mexico. Participants were without disability at baseline. Katz index was used to assess disability both at baseline and follow-up. PA, body mass index, and covariates were measured at baseline.
  
  
  RESULTS
  After 14-months of follow-up, the cumulative incidence of disability reached 10.1%. High PA was found to reduce disability risk (OR=0.64; 95%CI [0.43-0.95]), and the association between obesity and disability was marginally significant (OR=1.36; 95%CI [0.96-1.95]).
  
  
  CONCLUSIONS
  There is a need to perform a functional assessment of older adults in primary care to identify patients with functional dependence , and to promote physical activity to maintain muscle mass and thus reduce the incidence of disability.
authors.affiliation: Centro de Investigación en Evaluación y Encuestas, Cuernavaca, Morelos, México.
authors.forename: Betty
authors.initials: B
authors.lastname: Manrique-Espinoza
authors.affiliation: Centro de Investigación en Evaluación y Encuestas, Cuernavaca, Morelos, México.
authors.forename: Karla
authors.initials: K
authors.lastname: Moreno-Tamayo
authors.affiliation: Centro de Investigación en Evaluación y Encuestas, Cuernavaca, Morelos, México.
authors.forename: Martha M
authors.initials: MM
authors.lastname: Téllez-Rojo Solís
authors.affiliation: Centro de Investigación en Nutrición y Salud, Cuernavaca, Morelos, México.
authors.forename: Vanessa Vianey
authors.initials: VV
authors.lastname: De la Cruz-Góngora
authors.affiliation: Instituto Nacional de Geriatría, México, DF, México.
authors.forename: Luis Miguel
authors.initials: LM
authors.lastname: Gutiérrez-Robledo
authors.affiliation: Centro de Investigación en Evaluación y Encuestas, Cuernavaca, Morelos, México.
authors.forename: Aarón
authors.initials: A
authors.lastname: Salinas-Rodríguez
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008800:Mexico; D009043:Motor Activity; D009765:Obesity / Q000150:complications* / Q000517:prevention & control; D011446:Prospective Studies; D012423:Rural Health; D013997:Time Factors