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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.date.accessioned2021-01-26T23:20:57Z
dc.date.available2021-01-26T23:20:57Z
dc.date.created2020-08-03T10:27:06Z
dc.date.issued2020
dc.identifier.citationMental Health and Physical Activity. 2020, 19(Oktober 2020), Artikkel 100348.en_US
dc.identifier.issn1755-2966
dc.identifier.urihttps://hdl.handle.net/11250/2724870
dc.descriptionThis is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).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.language.isoengen_US
dc.subjectphysical activityen_US
dc.subjectmental healthen_US
dc.subjectschool-based interventionen_US
dc.subjectcluster randomized controlled trialen_US
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.description.versionpublishedVersionen_US
dc.rights.holder© 2020 The Authorsen_US
dc.source.pagenumber10en_US
dc.source.volume19en_US
dc.source.journalMental Health and Physical Activityen_US
dc.identifier.doi10.1016/j.mhpa.2020.100348
dc.identifier.cristin1821255
dc.description.localcodeInstitutt for idrettsmedisinske fag / Department of Sports Medicineen_US
dc.source.articlenumber100348en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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