Association between physical activity and retinal microvascular signs: the Atherosclerosis Risk in Communities (ARIC) Study.
OBJECTIVE
To examine the association between physical activity measured during leisure, sport, and work and retinal microvascular signs.


METHODS
Participants of the Atherosclerosis Risk in Communities (ARIC) Study, a population-based cross-sectional study, had retinal photographs taken at their third follow up visit (1993-1995). Retinal microvascular signs were assessed using a standardized protocol and retinal vascular caliber by a computer-assisted method. Leisure, sport, and work-related physical activity levels were determined through a modified Baecke physical activity questionnaire.


RESULTS
A higher level of physical activity during sport and work was significantly associated with a lower prevalence of arteriovenous (AV) nicking, wider venular caliber, and retinopathy. In multivariate models, persons with a level of sport-related physical activity above the median were less likely to have AV nicking (odds ratio [OR] = 0.87; 95% confidence interval [CI] 0.78-0.97) and wider retinal venules (OR = 0.91; 95% CI: 0.83-0.99). Persons with a level of work-related physical activity above the median were less likely to have diabetic retinopathy (OR = 0.66, 95% CI: 0.51-0.85).


CONCLUSIONS
In this cross-sectional analyzes, higher levels of physical activity was associated with a lower prevalence of retinal microvascular abnormalities.
Tikellis
Gabriella
G
Murdoch Children's Research Institute, Parkville, Victoria, Australia.
Anuradha
Satyamurthy
S
Klein
Ronald
R
Wong
Tien Yin
TY
D000368:Aged; D000704:Analysis of Variance; D050197:Atherosclerosis / Q000209:etiology*; D003430:Cross-Sectional Studies; D003930:Diabetic Retinopathy / Q000453:epidemiology / Q000209:etiology*; D005260:Female; D005451:Fluorescein Angiography; D006801:Humans; D007899:Leisure Activities; D008297:Male; D008875:Middle Aged; D009043:Motor Activity / Q000502:physiology*; D012171:Retinal Vessels / Q000473:pathology*; D012307:Risk Factors; D013177:Sports; D011795:Surveys and Questionnaires; D014481:United States / Q000453:epidemiology; D014937:Work