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Updated: Apr 22, 2026

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
Published on: August 8, 2019
Associations of overall sedentary time and screen time with sleep outcomes
Jeff K Vallance1, Matthew P Buman2, Clare Stevinson3
1Athabasca University, Faculty of Health Disciplines, Athabasca, Alberta, Canada. jeffv@athabascau.ca.
Objective:
To examine associations of accelerometer-assessed sedentary time and self-reported screen time with sleep outcomes.
Methods:
Cross-sectional study of 1674 adults from the 2005-2006 US National Health and Nutrition Examination Survey. Accelerometers were used to assess sedentary time. Screen time and sleep metrics were assessed via self-report.
Results:
Accelerometer-assessed sedentary time was not associated with sleep outcomes. Compared to participants with the least screen time (<2h/ day), participants with the most screen time (>6h/day) were more likely to report trouble falling asleep (OR = 2.78, 95% CI: 1.21, 6.40) and wake during the night (OR = 2.55, 95% CI: 1.17, 5.52).
Conclusions:
With respect to sleep outcomes, context-specific sedentary behaviors may be more important than overall sedentary time.
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