Waking Activities and Sleep: Analysis of UK Adolescents’ Daily Time-Use Diaries

Mireku, Michael (2021) Waking Activities and Sleep: Analysis of UK Adolescents’ Daily Time-Use Diaries. Journal of Adolescent Health, 68 (2). pp. 385-393. ISSN 1054-139X

Full content URL: https://doi.org/10.1016/j.jadohealth.2020.05.050

Waking Activities and Sleep: Analysis of UK Adolescents’ Daily Time-Use Diaries
Authors' Accepted Manuscript
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Item Type:Article
Item Status:Live Archive


Purpose: To investigate waking activities associated with risks of short and long sleep in a representative cohort of UK adolescents.

Methods: Data from 14-year-olds participating in the UK Millennium Cohort Study were used. Daily time-use diaries were completed by adolescents on two randomly selected days (one weekday and one weekend) to capture their activities within a 24h period from 4am of each selected day. Short and long sleep duration categories were computed by using the National Sleep Foundation’s age-specific non-recommended sleep duration thresholds.

Results: Approximately 8% and 6% were short sleepers on weekdays and weekends, respectively. On average, adolescents spent 33% of their time awake per weekend day on recreational digital media activities. Compared to those with optimal sleep on weekdays, short sleepers spent more time on personal care (Mean Difference, MD = +56min; 95% CI: 21; 92) and less time on exercise activities (MD = -15min; 95% CI: -27; -3). 10-minute increase in daily digital media activity was associated with 2% (95% CI: 1.01; 1.03) higher relative risk (RR) of adolescents being short sleepers on weekdays. RR of short sleeping was 1.03 (95% CI: 1.01; 1.04) times higher for every10-minute daily increase in travel time on weekdays.

Conclusions: Adolescents spend up to a-third of their time awake per day on digital media. However, more time spent on personal care and travel on weekdays and weekends is associated with increased risk of short sleep. These findings permit a reflection on appropriate interventions needed to improve sleep duration in sleep-deprived teens.

Keywords:sleep duration, waking activities, adolescence, sleep deprivation, excessive sleep, time-use data, Millennium Cohort Study
Subjects:C Biological Sciences > C800 Psychology
B Subjects allied to Medicine > B990 Subjects Allied to Medicine not elsewhere classified
B Subjects allied to Medicine > B910 Environmental Health
C Biological Sciences > C820 Developmental Psychology
Divisions:College of Social Science > School of Psychology
ID Code:40962
Deposited On:19 Jun 2020 11:31

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