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Television viewing and risk of mortality: exploring the biological plausibility

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journal contribution
posted on 15.06.2017, 14:03 by Mark Hamer, Thomas E. Yates, Panayotes Demakakos
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.

Funding

Hamer and Yates acknowledge support from the National Institute for Health Research (NIHR) Leicester Biomedical Research Centre, which is a partnership between University Hospitals of Leicester NHS Trust, Loughborough University and the University of Leicester.

History

School

  • Sport, Exercise and Health Sciences

Published in

Atherosclerosis

Citation

HAMER, M., YATES, T.E. and DEMAKAKOS, P., 2017. Television viewing and risk of mortality: exploring the biological plausibility. Atherosclerosis, 263 , pp.151-155.

Publisher

© Elsevier

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

09/06/2017

Publication date

2017

Notes

This paper was accepted for publication in the journal Atherosclerosis and the definitive published version is available at https://doi.org/10.1016/j.atherosclerosis.2017.06.024

ISSN

1879-1484

Language

en