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Feasibility of Measuring Sedentary Time with Thigh Worn Accelerometry and Sociodemographic Correlates: The 1970 British Cohort Study

21 Pages Posted: 11 Oct 2019

See all articles by Mark Hamer

Mark Hamer

Imperial College London - Institute Sport Exercise & Health; Loughborough University - School of Sport, Exercise and Health Sciences

Emmanuel Stamatakis

University College London - Department of Epidemiology and Public Health; The University of Sydney - Charles Perkins Centre

Sebastien Chastin

Glasgow Caledonian University - Department of Physiotherapy and Paramedicine

Natalie Pearson

Loughborough University - School of Sport, Exercise and Health Sciences

Matt Brown

University College London

Emily Gilbert

University College London

Alice Sullivan

University College London

More...

Abstract

Background: Sedentary behaviour has been routinely measured using self-report in large scale cohort studies. Here we report on one of the first large scale population cohort studies to employ a gold standard postural allocation technique to capture free-living sedentary behaviour.

Methods: Participants (n=4,634, aged 46.8 ± 0.7 yrs) from the 1970 British Cohort study were fitted with a water-proofed thigh mounted accelerometer device (activPAL3 micro; PAL Technologies Ltd.). Devices were worn continuously over a 7 day period and returned via post. Data were processed using an algorithm to isolate valid waking wear data from sleep or prolonged non-wear.

Findings: Participants that declined to wear the device (11.5%) were more likely to be male, smokers, and report poorer health. Useable data were retrieved in 85.7% of the devices fitted, with 79.6% of the sample recording at least 6 full days of wear (at least 10 waking hours). Total daily sitting time (average 9.5±2.0 hr/d men and 9.0±2.0 hr/d women) accounted for 59.4% and 57.3% of waking hours in men and women respectively; 73.8% of the sample recorded ≥8hr/d of sitting. Sitting in prolonged bouts of more than 60 continuous minutes accounted for 25.3 % and 24.4% of total daily sitting in men and women respectively. In mutually adjusted models, male sex, obesity, education, poor self-rated health, TV-viewing time and a sitting occupation were associated with higher sitting times.

Interpretation: Thigh worn accelerometry can be feasibly deployed in large scale population cohorts and is sociodemographically patterned. Funding: British Heart Foundation (SP/15/6/31397).

Funding Statement: British Heart Foundation (SP/15/6/31397).

Declaration of Interests: MH, SC, NP, MB, EG, AS do not have any competing interests to declare. ES has received an unrestricted grant from PAL Technologies, Scotland, UK.

Ethics Approval Statement: Participants provided informed consent and the study received full ethical approval from NRES Committee South East Coast - Brighton & Sussex (Ref 15/LO/1446).

Keywords: Sedentary; Physical activity; Sitting; Lifestyle; Population Cohort; Wearable

Suggested Citation

Hamer, Mark and Stamatakis, Emmanuel and Stamatakis, Emmanuel and Chastin, Sebastien and Pearson, Natalie and Brown, Matt and Gilbert, Emily and Sullivan, Alice, Feasibility of Measuring Sedentary Time with Thigh Worn Accelerometry and Sociodemographic Correlates: The 1970 British Cohort Study (October 4, 2019). Available at SSRN: https://ssrn.com/abstract=3464422 or http://dx.doi.org/10.2139/ssrn.3464422

Mark Hamer (Contact Author)

Imperial College London - Institute Sport Exercise & Health ( email )

London
United Kingdom

Loughborough University - School of Sport, Exercise and Health Sciences ( email )

Ashby Road
Nottingham NG1 4BU
Great Britain

Emmanuel Stamatakis

The University of Sydney - Charles Perkins Centre

Sydney, 2006
Australia

University College London - Department of Epidemiology and Public Health

1-19 Torrington Place
London, FL WC1E 6BT
United Kingdom

Sebastien Chastin

Glasgow Caledonian University - Department of Physiotherapy and Paramedicine ( email )

Cowcaddens Road
Glasgow G4 0BA, Scotland
United Kingdom

Natalie Pearson

Loughborough University - School of Sport, Exercise and Health Sciences

Ashby Road
Nottingham NG1 4BU
Great Britain

Matt Brown

University College London

Gower Street
London, WC1E 6BT
United Kingdom

Emily Gilbert

University College London

Gower Street
London, WC1E 6BT
United Kingdom

Alice Sullivan

University College London

Gower Street
London, WC1E 6BT
United Kingdom

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