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Can sitting be bad for your health? An overview of current research

Can sitting be bad for your health? An overview of current research. Stuart Biddle Professor of Physical Activity & Health School of Sport, Exercise & Health Sciences Loughborough University. and woman. Is sedentary behaviour associated with health outcomes?. Establish links between

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Can sitting be bad for your health? An overview of current research

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  1. Can sitting be bad for your health? An overview of current research Stuart Biddle Professor of Physical Activity & Health School of Sport, Exercise & Health Sciences Loughborough University

  2. and woman

  3. Is sedentary behaviour associated with health outcomes? Establish links between behaviour & health What factors are associated with high or low levels of sitting? Determinants or correlates Interventions Translation into practice Measure behaviour Can we ‘roll out’ behaviour change solutions? Can we help people sit less? What is sedentary behaviour and how do we measure it?

  4. Sedentary and active behaviours Waking hours: Sitting, lying, very low energy expenditure ‘Physical activity’ research Sleep Sedentary behaviour Light movement Moderate PA Vigorous PA Energy Expenditure LOW HIGH

  5. A big slice of the pie!

  6. Sitting at school or work TV Screen time Sedentary behaviours Computers Socialising Homework Motorised transport Reading; Listening to music

  7. Sedentary time per day: US adults by accelerometry NHANES N=6,329 Matthews et al: Am J Epi, 2008

  8. Weekly hours of TV viewing: UK and Scotland - MALES Physical activity statistics 2012, BHF

  9. Weekly hours of TV viewing: UK and Scotland - FEMALES Trends: 1. Scotland > UK 2. Females > Males Physical activity statistics 2012, BHF

  10. Health outcomes of sedentary behaviour Is sedentary behaviour bad for you?

  11. Nov 21, 1953

  12. ‘Sitting is the new smoking’

  13. Is sedentary behaviour associated with health outcomes? Establish links between behaviour & health • All-cause mortality • CVD and mortality • Obesity • Metabolic health & diabetes risk • Mental health

  14. All-cause mortality: Risk ratios for sitting time for adults Canada Fitness Survey 1981-1993 (Katzmarzyk et al., MSSE, 2009)

  15. Systematic Review and Meta-Analysis Wilmot, et al., (2012). Diabetologia, 55(11), 2895-2905 Wilmot, et al., (2012). Diabetologia, 55(11), 2895-2905 CV mortality: HR = 1.90 (1.71) CV mortality: HR = 1.90 Adjusted for PA: HR = 1.40

  16. Is waist thickness inversely related to TV thickness?? TV v. body fat: plausible but complex

  17. Sedentary behaviour and weight status in adults Thorp, et al. (2011). Am J Prev Med, 41(2) • there is a reasonable level of evidence to conclude that sedentary behaviour during childhood and adolescence is a strong predictor of obesity during adulthood http://www.scivee.tv/node/32396

  18. Is it sitting or eating, or both? • Clear associations between sedentary behaviour (usual screen time, and often TV viewing) and: • elements of a less healthy diet including – • lower fruit and vegetable consumption • higher consumption of energy-dense snacks, drinks and fast foods • higher total energy intake Pearson & Biddle (2011) Am J Prev Med, 41(2)

  19. Maybe we always knew this … ? • ‘Writing and travel broaden your ass if not your mind, and I like to write standing up’Ernest Hemingway

  20. Wilmot, et al., (2012). Diabetologia, 55(11), 2895-2905 Diabetes: HR=2.12 Controlling for PA=2.47

  21. Scottish Health Survey data (Hamer et al., Am J Prev Med 2010) MCS: mental function GHQ: psych distress

  22. Can sitting be bad for your health? An overview of current research Stuart Biddle Email: s.j.h.biddle@lboro.ac.uk Twitter: @stuart_biddle

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