Physical activity, television viewing time, and retinal microvascular caliber

Anuradha, Satyamurthy, Healy, Genevieve N., Dunstan, David W., Klein, Ronald, Klein, Barbara E., Cotch, Mary Frances, Wong, Tien Y. and Owen, Neville (2011) Physical activity, television viewing time, and retinal microvascular caliber. American Journal of Epidemiology, 173 5: 518-525. doi:10.1093/aje/kwq412

Author Anuradha, Satyamurthy
Healy, Genevieve N.
Dunstan, David W.
Klein, Ronald
Klein, Barbara E.
Cotch, Mary Frances
Wong, Tien Y.
Owen, Neville
Title Physical activity, television viewing time, and retinal microvascular caliber
Journal name American Journal of Epidemiology   Check publisher's open access policy
ISSN 0002-9262
Publication date 2011-03
Year available 2011
Sub-type Article (original research)
DOI 10.1093/aje/kwq412
Volume 173
Issue 5
Start page 518
End page 525
Total pages 8
Place of publication Cary, NC, United States
Publisher Oxford University Press
Collection year 2012
Language eng
Abstract Physical activities and sedentary behaviors are 2 broad classes of behavior that may be clearly distinguished from each other and have different patterns of determinants. The authors examined the associations of physical activity and television viewing time with retinal vascular caliber among US adults (n ¼ 5,893) from 4 racial/ethnic groups in the Multi-Ethnic Study of Atherosclerosis (2002–2004) that included non-Hispanic whites, blacks, Hispanics, and Chinese. Physical activity and television viewing time were assessed by using a questionnaire, and vascular calibers (arteriolar and venular) were measured from digital retinal photographs. Those in the lowest quartile of physical activity had wider retinal venular caliber compared with those in the highest quartile in multivariate models adjusted for demographic, cardiovascular, behavioral, and inflammatory risk factors. This was noted in non-Hispanic whites and Hispanics but not in blacks or Chinese. For television viewing time, non-Hispanic whites (but not the other racial/ethnic groups) who were in the highest quartile of television viewing time had wider retinal venular caliber compared with those in the lowest quartile. No associations were noted with arteriolar caliber. Lower levels of physical activity (among non-Hispanic whites and Hispanics) and higher levels of television viewing time (among whites) are associated with wider retinal venules.
Keyword Arterioles
Motor activity
Sedentary lifestyle
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 7 February 2011

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Public Health Publications
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Created: Sun, 13 Mar 2011, 00:15:57 EST