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Television viewing and risk of mortality: Exploring the biological plausibility.

Hamer, M; Yates, T; Demakakos, P; (2017) Television viewing and risk of mortality: Exploring the biological plausibility. Atherosclerosis , 263 pp. 151-155. 10.1016/j.atherosclerosis.2017.06.024. Green open access

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Abstract

BACKGROUND AND AIMS: Television (TV) viewing is a major component of leisure sedentary time, and has been consistently associated with cardiovascular disease. We examined the extent to which metabolic biomarkers explain the association between TV viewing and mortality. METHODS: Participants (N = 8,451, aged 64.8 ± 9.9 yrs) were drawn from The English Longitudinal Study of Ageing (ELSA), a national prospective cohort study of community-dwelling men and women living in England. The individual participant data were linked with death records from the National Health Service registries from 2008 to 2012. Cox proportional hazards models were used to estimate the risk of death according to time spent watching TV, with biomarkers added in a stepwise fashion to estimate potential mediation. RESULTS: Over an average follow up of 4 years (33,832 person years), there were 370 deaths. In models adjusted for comorbidities, psychosocial factors, and health behaviours including physical activity, there was an association between TV viewing and mortality (≥6 h per day vs. < 2 h per day [Ref]; hazard ratio = 1.98, 95% CI, 1.25, 3.15). Adjustment for inflammatory markers (C-reactive protein and fibrinogen) accounted for ∼15.7% of the association between TV viewing and mortality, but metabolic risk factors (HDL-cholesterol, triglycerides, glycated haemoglobin) did not contribute. CONCLUSIONS: The association between TV viewing and mortality was partly mediated by inflammatory markers, although the relationship remains largely unexplained.

Type: Article
Title: Television viewing and risk of mortality: Exploring the biological plausibility.
Location: Ireland
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.atherosclerosis.2017.06.024
Publisher version: https://doi.org/10.1016/j.atherosclerosis.2017.06....
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Ageing, Biomarkers, Inflammation, Mortality, Sedentary
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Pop Health Sciences > Institute of Epidemiology and Health
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Pop Health Sciences > Institute of Epidemiology and Health > Epidemiology and Public Health
URI: http://discovery.ucl.ac.uk/id/eprint/1561208
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