title: Accelerometer-assessed sedentary and physical activity behavior and its association with vision among U.S. adults with diabetes.
abstract: BACKGROUND
  To examine the association between accelerometer-assessed physical activity and visual acuity among a nationally representative sample of adults with evidence of diabetes.
  
  
  METHODS
  Six hundred seventy adult participants with diabetes (age 20 to 85) from the 2003-2006 NHANES cycles constituted the analyzed sample. Participants wore an accelerometer for 7 days to quantify time spent in sedentary behavior, light-intensity physical activity and moderate-to-vigorous physical activity. Visual acuity was objectively assessed for each eye.
  
  
  RESULTS
  In multivariable models, every 1-hour increment in daily sedentary behavior was associated with 23% greater likelihood (OR = 1.23; 95% CI: 1.01-1.52) of having uncorrected refractive error as opposed to normal sight. Performing more than 5 minutes of daily moderate-to-vigorous physical activity was associated with a 82% lower likelihood of having vision impairment as opposed to normal sight (OR = 0.18; 95% CI: 0.06-0.50) while every 1-hour increment in daily light-intensity physical activity was, after adjustments, independently associated with a 38% lower likelihood of vision impairment (OR = 0.62; 95% CI: 0.42-0.92).
  
  
  CONCLUSIONS
  People with diabetes spending more time in sedentary behavior and less time performing light or moderate-to-vigorous physical activity are more likely to have poorer vision.
authors.affiliation: Center for Health Behavior Research; Dept of Health, Exercise Science, and Recreation Management, School of Applied Sciences, The University of Mississippi, Oxford, MS.
authors.forename: Paul D
authors.initials: PD
authors.lastname: Loprinzi
authors.forename: Gina
authors.initials: G
authors.lastname: Pariser
authors.forename: Pradeep Y
authors.initials: PY
authors.lastname: Ramulu
mesh_terms: D061725:Accelerometry; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003430:Cross-Sectional Studies; D003930:Diabetic Retinopathy / Q000453:epidemiology / Q000503:physiopathology* / Q000517:prevention & control; D005260:Female; D006801:Humans; D016013:Likelihood Functions; D008297:Male; D008875:Middle Aged; D009043:Motor Activity / Q000502:physiology*; D015999:Multivariate Analysis; D009749:Nutrition Surveys; D012030:Refractive Errors / Q000453:epidemiology* / Q000503:physiopathology* / Q000517:prevention & control; D012307:Risk Factors; D057185:Sedentary Behavior; D014481:United States; D014792:Visual Acuity / Q000502:physiology*; D055815:Young Adult