title: The Effect of Dietary Fish Oil in addition to Lifestyle Counselling on Lipid Oxidation and Body Composition in Slightly Overweight Teenage Boys.
abstract: Objective. n-3 long-chain polyunsaturated fatty acids (LCPUFAs) have shown potential to increase lipid oxidation and prevent obesity. Subjects. Seventy-eight boys aged 13-15 y with whole-body fat% of 30 ± 9% were randomly assigned to consume bread with fish oil (FO) (1.5 g n-3 LCPUFA/d) or vegetable oil for 16 weeks. All boys were counselled to improve diet and exercise habits. Results. Lifestyle counselling resulted in decreased sugar intake but did not change the physical activity level. Whole-body fat% decreased 0.7 ± 2.5% and 0.6 ± 2.2%, resting metabolic rate after the intervention was 7150 ± 1134 kJ/d versus 7150 ± 1042 kJ/d, and the respiratory quotient was 0.89 ± 0.05 versus 0.88 ± 0.05, in the FO and control group, respectively. No group differences were significant. Conclusion. FO-supplementation to slightly overweight teenage boys did not result in beneficial effects on RMR, lipid oxidation, or body composition.
authors.affiliation: Department of Human Nutrition, Faculty of Life Sciences, University of Copenhagen, 1958 Frederiksberg, Denmark.
authors.forename: Maiken Højgaard
authors.initials: MH
authors.lastname: Pedersen
authors.forename: Christian
authors.initials: C
authors.lastname: Mølgaard
authors.forename: Lars Ingvar
authors.initials: LI
authors.lastname: Hellgren
authors.forename: Jeppe
authors.initials: J
authors.lastname: Matthiessen
authors.forename: Jens Juul
authors.initials: JJ
authors.lastname: Holst
authors.forename: Lotte
authors.initials: L
authors.lastname: Lauritzen