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dc.contributor.authorSvantorp-Tveiten, Kethe Marie Engen
dc.contributor.authorTorstveit, Monica Klungland
dc.contributor.authorRosenvinge, Jan H
dc.contributor.authorSundgot-Borgen, Christine
dc.contributor.authorFriborg, Oddgeir
dc.contributor.authorBratland-Sanda, Solfrid
dc.contributor.authorPettersen, Gunn
dc.contributor.authorSundgot-Borgen, Jorunn
dc.date.accessioned2022-04-01T08:32:01Z
dc.date.available2022-04-01T08:32:01Z
dc.date.embargoEndDate2022-10-28
dc.date.issued2021-10-28
dc.description.abstractObjective - To investigate the immediate and 12-months effects of a school-based intervention aiming to reduce risk and enhance protective factors for eating disorder development in high school boys and girls.<p> <p>Method - In total, 4,149 adolescents from 30 high schools were eligible for inclusion and 2,446 consented to participate and were randomly allocated to the Healthy Body Image (HBI) intervention or a control group (classes as usual). The HBI intervention is multicomponent consisting of three workshops targeting body image, social media usage and lifestyle. Linear mixed model and intention-to-treat analyses were applied to investigate the effects of group, time, and gender at posttest, 3-, and 12-months follow-up. The main outcome variable was eating disorder sympomatology, and secondary outcome variables were self-esteem, mental distress, body image flexibility, thin internalization, muscular internalization, drive for leanness, perceived media pressure, protein- and creatine supplement use, and diet aid use.<p> <p>Results - The HBI intervention significantly reduced eating disorder risk factor scores related to eating disorder sympomatology, thin internalization and perceived pressure from media, which was particularly pronounced in girls. Positive intervention effects on body image flexibility were only observed at posttest for boys but grew increasingly larger for girls across the 12-month follow-up time span. Favorable intervention effects on protein and creatine supplement use were only present at 3-months follow-up in boys solely. A general favorable intervention effect was observed for self-esteem, mental distress, muscular internalization, and drive for leanness.<p> <p>Conclusion - The HBI intervention produced consistent reductions in risk factors and enhancements in protective factors associated with eating disorder development in adolescents.en_US
dc.descriptionAccepted manuscript version, licensed <a href=http://creativecommons.org/licenses/by-nc-nd/4.0/> CC BY-NC-ND 4.0. </a>en_US
dc.identifier.citationSvantorp-Tveiten KME, Torstveit MKT, Rosenvinge JH, Sundgot-Borgen C, Friborg O, Bratland-Sanda S, Pettersen G, Sundgot-Borgen J. Effect of A Healthy Body Image intervention on risk- and protective factors for eating disorders: A cluster randomized controlled trial. Mental health & prevention. 2021;24en_US
dc.identifier.cristinIDFRIDAID 1951683
dc.identifier.doi10.1016/j.mhp.2021.200225
dc.identifier.issn2212-6570
dc.identifier.urihttps://hdl.handle.net/10037/24676
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalMental health & prevention
dc.rights.accessRightsembargoedAccessen_US
dc.rights.holderCopyright 2021 The Author(s)en_US
dc.titleEffect of A Healthy Body Image intervention on risk- and protective factors for eating disorders: A cluster randomized controlled trialen_US
dc.type.versionacceptedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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