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Television Viewing Time and Mortality. The Australian Diabetes, Obesity and Lifestyle Study (AusDiab).

Circulation 2010 1;():

Posted on Jan 20, 2010
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Reduced physical activity with more time spent with digital equipment (TVs, computers, others) with increasing obesity and diabetes continues unchecked. Recently, figures finds that children spend almost 8 hours a day (4.5 hours TV content, 2.3 hours music/audio, 1.3 hours, video games 1.1 hours and 25 minutes on movies) with media as reported by Toppo . This sedentary lifestyle is part of the fuel that drives the obesity and diabetes pandemic. In association with this report, Dunstan et al published research on the Australian Diabetes, Obesity and Lifestyle Study (AusDiab) finds on television viewing time in relation to subsequent all-cause, CVD, and cancer mortality in a 6.6 year follow trial. They recruited 8800 patients from 11 249 households that participated in the household interview, 20 347 adults (>25 years of age) completed the household interview, and 11 247 (55.3%) had a biomedical examination after an overnight fast (minimum, 9 hours). In study patients were characterized by the 3 television viewing time categories (<2, 2 to 4, and >4 h/d). Hazard ratio adjustments for age and sex compared with 0 to <2.0 h/d of television viewing, the all cause mortality HRs for >2 to <4 h/d and for >4 h/d were 1.20 and 1.67. Cardiovascular mortality was 1.24 and 2.12. After adjustment for all other covariates (adjustment for smoking, education, total energy intake, alcohol intake, Diet Quality Index, hypertension, total cholesterol, HDL-C, serum triglycerides, lipid lowering medication use, previously reported CVD, and glucose tolerance status) all cause mortality (HR, 1.08; 95% CI, 1.00 to 1.17)(p<0.048), CVD mortality (HR, 1.14; 95% CI, 0.99 to 1.30), cancer mortality(HR, 1.06; 95% CI, 0.93 to 1.20), and non-CVD/noncancer mortality (HR, 1.04; 95% CI, 0.89 to 1.22); was made. In summary, for each 1-hour increment in television viewing time was found to be associated with an increased 11% risk of all-cause and 18% in cardiovascular disease mortality. This population based cohort study addresses concerns about lifestyle effects on cardiovascular disease, but with limitations of a cohort study, however it does point again to the concern with a sedentary lifestyle and diabetes cardiovascular risk. Robert J. Chilton, DO FACC
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