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dc.contributor.authorÅvitsland, Andreas
dc.contributor.authorLeibinger, Eva
dc.contributor.authorResaland, Geir Kåre
dc.contributor.authorSolberg, Runar Barstad
dc.contributor.authorKolle, Elin
dc.contributor.authorDyrstad, Sindre Mikal
dc.identifier.citationÅvitsland, A., Leibinger, E., Resaland, G. K., Solberg, R. B., Kolle, E., & Dyrstad, S. M. (2020). Effects of school-based physical activity interventions on mental health in adolescents: The School in Motion cluster randomized controlled trial. Mental Health and Physical Activity, 19, 100348.en_US
dc.description.abstractPurpose To investigate the effects of two school-based physical activity interventions on mental health in Norwegian adolescents. Methods Students from 29 lower secondary schools in Norway (n = 2084; 14–15 years; 49% female) were cluster-randomized into either a control group or one of two intervention groups (M1 and M2). Two interventions based on different theoretical frameworks aimed to increase physical activity in school by approximately 120 min per week, throughout a 29-week intervention period. M1 consisted of 30 min physically active learning, 30 min physical activity and one 60 min physical education lesson. M2 consisted of one physical education lesson and one physical activity lesson, both focusing on facilitating students’ interest, responsibility and social relationships. The self-report version of the Strengths and Difficulties Questionnaire was used to assess mental health. Physical activity was measured by accelerometry. Linear mixed effects models were used to examine the effects of the interventions. Results No effects were found for the overall study population. Interaction effects warranted subgroup analyses: M1 showed favorable results in the subgroup with the highest levels of psychological difficulties at baseline (b = −2.9; −5.73 to −0.07; p = .045) and in the immigrant subgroup (b = −1.6; −3.53 to 0.27; p = .093). M2 showed favorable results in the immigrant subgroup (b = −2.1; −4.36 to 0.21; p = .075). Conclusions The two interventions did not improve mental health in the full study population. However, results indicated beneficial effects among immigrants and those with poor mental health at baseline. More research is needed due to missing values and the results should therefore be interpreted with caution.en_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titleEffects of school-based physical activity interventions on mental health in adolescents: The School in Motion cluster randomized controlled trialen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.rights.holderThe authorsen_US
dc.subject.nsiVDP::Medisinske Fag: 700en_US
dc.source.journalMental Health and Physical Activityen_US

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