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A large randomized individual and grupal intervention conducted by dietitians increased the adherence to Mediterranean-type diets: The PREDIMED study
Authors: Zazpe, I. (Itziar)
Sanchez-Tainta, A. (Ana)
Martinez-Gonzalez, M.A. (Miguel Ángel)
Lamuela-Raventos, R.M. (Rosa Maria)
Schröder, H. (Helmut)
Estruch, R. (Ramon)
Salas-Salvado, J. (Jordi)
Corella, D. (Dolores)
Fiol, M. (Miquel)
Gomez-Gracia, E. (Enrique)
Aros, F. (Fernando)
Ros, E. (Emilio)
Ruiz-Gutierrez, V. (Valentina)
Iglesias, P. (Pablo)
Conde-Herrero, M. (M.)
Keywords: Materias Investigacion::Ciencias de la Salud::Nutrición y dietética
Dietary intervention
Mediterranean diet
Cardiovascular risk
Issue Date: 2008
Publisher: Elsevier
Publisher version:
ISSN: 0002-8223
Citation: Zazpe I, Sanchez-Tainta A, Estruch R, Lamuela-Raventos RM, Schroder H, Salas-Salvado J, et al. A large randomized individual and group intervention conducted by registered dietitians increased adherence to Mediterranean-type diets: the PREDIMED study. J Am Diet Assoc 2008 Jul;108(7):1134-44; discussion 1145.
Objective: Assessment of the effectiveness of an intervention aimed to increase adherence to the Mediterranean Diet (MeDiet). Design: 12-month assessment of a randomized primary prevention trial Subjects/settings: 1551 asymptomatic persons aged 55-80 years, with diabetes or 3 cardiovascular risk factors. Intervention: Participants were randomly assigned to a control group or 2 MeDiet groups. Those allocated to the 2 MeDiet groups received individual motivational interviews every 3 months to negotiate nutritional goals, and group educational sessions also on a quarterly basis. One MeDiet group received free virgin olive oil (1 L/wk), the other received free mixed nuts (30 g/d). Participants in the control group received verbal instructions and a leaflet recommending the National Cholesterol Education Program-III dietary guidelines. Main Outcome measures: changes in food and nutrient intake after 12-month. Statistical analyses: Paired t-tests (Within-group changes) and ANOVA (between-group changes). Results: Participants allocated to both MeDiets increased the intake of virgin olive oil, nuts, vegetables, legumes and fruits (P<0.05; all within- and between-group differences). Participants in the 3 groups decreased their intake of meat and pastries, cakes and sweets (P<0.05; all). Fiber, monounsaturated and polyunsaturated fatty acid intake increased in MeDiet groups (P<0.005; all). Favorable, although nonsignificant, changes in intake of other nutrients occurred only in the MeDiet groups. Conclusions: A 12-month behavioral intervention promoting the MeDiet can favorably modify the overall dietary pattern. Applications: The individual motivational interventions together with the group sessions and the free provision of high-fat and palatable key foods customary to the MeDiet, were effective in improving the dietary habits of participants in this trial.
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DA - Medicina - MPSP -Artículos de revista

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