Adolescent time use and mental health: A cross-sectional, compositional analysis in the Millennium Cohort Study

Atkin, Andrew J ORCID:, Dainty, Jack R ORCID:, Dumuid, Dorothea, Kontostoli, Elli, Shepstone, Lee, Tyler, Richard, Noonan, Robert, Richardson, Cassandra and Fairclough, Stuart J (2021) Adolescent time use and mental health: A cross-sectional, compositional analysis in the Millennium Cohort Study. BMJ Open, 11 (10). ISSN 2044-6055

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Objective To examine the association of 24-hour time-use compositions with mental health in a large, geographically diverse sample of UK adolescents. Design Cross-sectional, secondary data analysis. Setting Millennium Cohort Study (sixth survey), a UK-based prospective birth cohort. Participants Data were available from 4642 adolescents aged 14 years. Analytical samples for weekday and weekend analyses were n=3485 and n=3468, respectively (45% boys, 85% white ethnicity). Primary and secondary outcome measures Primary outcome measures were the Strengths and Difficulties Questionnaire (SDQ, socioemotional behaviour), Mood and Feelings Questionnaire (MFQ, depressive symptoms) and Rosenberg Self-Esteem Scale (RSE, self-esteem). Behavioural exposure data were derived from 24-hour time-use diaries. Results On weekdays, participants spent approximately 54% of their time in sleep, 3% in physical activity, 9% in school-related activities, 6% in hobbies, 11% using electronic media and 16% in domestic activities. Predicted differences in SDQ, MFQ and RSE were statistically significant for all models (weekday and weekend) that simulated the addition or removal of 15 min physical activity, with an increase in activity being associated with improved mental health and vice versa. Predicted differences in RSE were also significant for simulated changes in electronic media use; an increase in electronic media use was associated with reduced self-esteem. Conclusion Small but consistent associations were observed between physical activity, electronic media use and selected markers of mental health. Findings support the delivery of physical activity interventions to promote mental health during adolescence, without the need to specifically target or protect time spent in other activities.

Item Type: Article
Uncontrolled Keywords: depression & mood disorders,epidemiology,mental health,public health,medicine(all),sdg 3 - good health and well-being ,/dk/atira/pure/subjectarea/asjc/2700
Faculty \ School: Faculty of Medicine and Health Sciences > School of Health Sciences
Faculty of Medicine and Health Sciences > Norwich Medical School
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Depositing User: LivePure Connector
Date Deposited: 14 Oct 2021 01:12
Last Modified: 21 Apr 2023 01:10
DOI: 10.1136/bmjopen-2020-047189

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