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dc.contributor.authorHandeland, Katina Dingtorpen_US
dc.contributor.authorSkotheim, Siven_US
dc.contributor.authorBaste, Valborgen_US
dc.contributor.authorGraff, Ingvild Eideen_US
dc.contributor.authorFrøyland, Livaren_US
dc.contributor.authorLie, Øyvinden_US
dc.contributor.authorKjellevold, Marianen_US
dc.contributor.authorWik, Mariaen_US
dc.contributor.authorStormark, Kjell Mortenen_US
dc.contributor.authorØyen, Jannikeen_US
dc.contributor.authorDahl, Lisbethen_US
dc.PublishedHandeland K, Skotheim S, Baste V, Graff IE, Frøyland L, Lie Ø, Kjellevold MK, Wik M, Stormark KM, Øyen J, Dahl L. The effects of fatty fish intake on adolescents' nutritional status and associations with attention performance: Results from the FINS-TEENS randomized controlled trial. Nutrition Journal. 2018;17(30)eng
dc.description.abstractBackground: Adolescence involves changes in dietary habits that may induce imbalances in the intake of different nutrients. Fish is an important dietary source of omega-3 (n-3) long-chain polyunsaturated fatty acids (LCPUFAs), vitamin D, several minerals and high-quality protein. By using secondary outcomes and exploratory analyses, the aims of this paper were to evaluate if nutritional biomarkers (red blood cell fatty acids, serum (s)-25(OH)D, s-ferritin and urinary iodine concentration (UIC)) were altered during a dietary intervention, and if they mediated previously reported changes in attention performance. In addition, to examine the status of the biomarkers and explore associations between dietary pattern, biomarkers and attention performance cross-sectionally at baseline. Methods: The Fish Intervention Studies-TEENS (FINS-TEENS) was a three-armed intervention trial, including adolescents from eight secondary schools (n = 415; age: 14–15y) in Bergen, Norway. Participants were individually randomized to receive either fish meals, meat meals or n-3 LCPUFA supplements, three times a week for a total of 12 weeks. Blood and urine samples were collected pre and post intervention and attention performance was assessed with the d2 test of attention. Analyses of covariance (ANCOVA) assessed differences between groups in changes of biomarkers and linear mixed models were applied in analyses of attention performance and biomarkers. The trial is registered in (NCT02350322). Results: At baseline, the mean omega-3 index was 5.8 ± 1.3% and deficient status were identified for s-25(OH)D (54%), s-ferritin (10%) and UIC (40%). The intervention resulted in an increase in DHA and the omega-3 index which was larger in the supplement group compared to the fish and meat group (P < 0.01), and in the fish group compared to the meat group (P < 0.01). No differences between the groups were observed for changes in 25(OH)D, s-ferritin or UIC. None of the biomarkers mediated performance in the d2 test. The intake of fatty fish and a healthy dietary pattern was associated with scores in processing speed at baseline. Conclusions: These results show that Norwegian adolescents have insufficient status of important nutrients, which may be improved with fatty fish consumption or n-3 LCPUFA supplements. However, nutritional status was not associated with scores in the d2 test of attention.en_US
dc.rightsAttribution CC BYeng
dc.subjectN-3 LCPUFAeng
dc.subjectVitamin Deng
dc.subjectFatty fisheng
dc.subjectDietary interventioneng
dc.subjectHealthy adolescentseng
dc.titleThe effects of fatty fish intake on adolescents' nutritional status and associations with attention performance: Results from the FINS-TEENS randomized controlled trialen_US
dc.typePeer reviewed
dc.typeJournal article
dc.rights.holderCopyright 2018 The Authors
dc.source.journalNutrition Journal
dc.relation.projectNorges forskningsråd: 222648

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