Chloe Forte1,2, Cillian P McDowell3, Catherine B Woods4,5, Mats Hallgren6, Wesley O'Brien7, Sarahjane Belton8, Marie H Murphy9, Cormac Powell5,10, Matthew P Herring4,5. 1. Department of Physical Education and Sport Science, University of Limerick, Limerick, Ireland. Chloe.forte@ul.ie. 2. Physical Activity for Health Cluster, Health Research Institute, University of Limerick, Limerick, Ireland. Chloe.forte@ul.ie. 3. School of Medicine and The Irish Longitudinal Study On Ageing, Trinity College Dublin, The University of Dublin, Dublin, D02 R590, Ireland. 4. Department of Physical Education and Sport Science, University of Limerick, Limerick, Ireland. 5. Physical Activity for Health Cluster, Health Research Institute, University of Limerick, Limerick, Ireland. 6. Epidemiology of Psychiatric Conditions, Substance Use, and Social Environment (EPiCSS), Department of Global Public Health Sciences, Karolinska Institutet, Stockholm, 171 77, Sweden. 7. School of Education, Sports Studies and Physical Education Programme, University College Cork, 2 Lucan Place, Western Road, Cork, Ireland. 8. School of Health and Human Performance, Dublin City University, Dublin, Ireland. 9. Doctoral College and School of Sport, Ulster University, Newtownabbey, Co Antrim, Northern Ireland. 10. High Performance Unit, Sport Ireland National Sports Campus, Dublin, Ireland.
Abstract
BACKGROUND: Higher levels of sedentary behaviour (SB) and screen-time are associated with greater symptoms of depression in adolescents, but the effect of the type and context of SB and screen-time remains underexplored. As part of a nationally-representative observational study, the current cross-sectional study examined associations between SB, screen-time and depressive symptoms among 422 adolescents (13.5 ± 0.92 years; 125 female) in the Republic of Ireland. METHOD: Participants completed the Quick Inventory of Depressive Symptomatology and self-reported weekly SB, categorised into mentally-active screen-time (e.g., computer use for fun), mentally-passive screen-time (e.g., television viewing) and mentally-active non-screen-based SB (e.g., reading). Mann-Whitney U tests and Kruskal-Wallis H tests examined differences in screen-time and depressive symptoms by relevant covariates. Linear regression quantified crude and adjusted associations between total SB and mentally-active and mentally-passive screen-time and SB, and depressive symptoms. RESULTS: Crude and adjusted linear regressions showed total SB was significantly, positively associated with depressive symptoms (unadjusted: β = 0.27, p = 0.002, adjusted: β = 0.27, p = 0.002). When type and context were examined in the same model, only mentally-active screen-time was positively associated with depressive symptoms (unadjusted: β = 0.37, p = 0.009, adjusted: β = 0.39, p = 0.007). CONCLUSION: Differential associations between total SB and mentally-active screen-time and SB, versus mentally-passive screen-time, and depressive symptoms among Irish adolescents were observed. Findings highlight the importance of investigating the context and type of SB and screen-time in adolescents.
BACKGROUND: Higher levels of sedentary behaviour (SB) and screen-time are associated with greater symptoms of depression in adolescents, but the effect of the type and context of SB and screen-time remains underexplored. As part of a nationally-representative observational study, the current cross-sectional study examined associations between SB, screen-time and depressive symptoms among 422 adolescents (13.5 ± 0.92 years; 125 female) in the Republic of Ireland. METHOD: Participants completed the Quick Inventory of Depressive Symptomatology and self-reported weekly SB, categorised into mentally-active screen-time (e.g., computer use for fun), mentally-passive screen-time (e.g., television viewing) and mentally-active non-screen-based SB (e.g., reading). Mann-Whitney U tests and Kruskal-Wallis H tests examined differences in screen-time and depressive symptoms by relevant covariates. Linear regression quantified crude and adjusted associations between total SB and mentally-active and mentally-passive screen-time and SB, and depressive symptoms. RESULTS: Crude and adjusted linear regressions showed total SB was significantly, positively associated with depressive symptoms (unadjusted: β = 0.27, p = 0.002, adjusted: β = 0.27, p = 0.002). When type and context were examined in the same model, only mentally-active screen-time was positively associated with depressive symptoms (unadjusted: β = 0.37, p = 0.009, adjusted: β = 0.39, p = 0.007). CONCLUSION: Differential associations between total SB and mentally-active screen-time and SB, versus mentally-passive screen-time, and depressive symptoms among Irish adolescents were observed. Findings highlight the importance of investigating the context and type of SB and screen-time in adolescents.
Authors: Mark S Tremblay; Valerie Carson; Jean-Philippe Chaput; Sarah Connor Gorber; Thy Dinh; Mary Duggan; Guy Faulkner; Casey E Gray; Reut Gruber; Katherine Janson; Ian Janssen; Peter T Katzmarzyk; Michelle E Kho; Amy E Latimer-Cheung; Claire LeBlanc; Anthony D Okely; Timothy Olds; Russell R Pate; Andrea Phillips; Veronica J Poitras; Sophie Rodenburg; Margaret Sampson; Travis J Saunders; James A Stone; Gareth Stratton; Shelly K Weiss; Lori Zehr Journal: Appl Physiol Nutr Metab Date: 2016-06 Impact factor: 2.665
Authors: Lin Yang; Chao Cao; Elizabeth D Kantor; Long H Nguyen; Xiaobin Zheng; Yikyung Park; Edward L Giovannucci; Charles E Matthews; Graham A Colditz; Yin Cao Journal: JAMA Date: 2019-04-23 Impact factor: 56.272