Assessing the Efficacy of a Group Mediated Nutritional Knowledge Intervention for Individuals with Obesity

Publication: Canadian Journal of Dietetic Practice and Research
20 October 2016

Abstract

Purpose: This study reports on the effect of a group-based nutrition and physical activity intervention program on nutrition knowledge and eating habits in a cohort of people with obesity.
Methods: A quasi-experimental design with pre- and post-test measures. The intervention consisted of physical activity led by certified exercise physiologists and a nutritional education component led by registered dietitians over a 6-month period followed by 6 months of self-management. Participants’ nutrition knowledge and eating habits were assessed using the modified Nutrition Assessment, the Nutrition Knowledge Survey, and the Food Choice Questionnaires at baseline, after the 6-month intervention, and after 6 months of self-management.
Results: Complete data were available for 59 (40%) of participants after 12 months because of attrition. Nutritional knowledge and behaviours improved. Participants reported increasing their consumption of healthy foods during the active intervention and maintained these changes through the self-management phase. Knowledge of healthy foods was improved and a greater likelihood of choosing food for weight control and health properties was reported.
Conclusions: Knowledge and reported consumption of healthier nutrition improved during the active intervention and was maintained during the self-management period for individuals who completed the program. Registered dietitians can play an important role in managing patients with obesity in group settings.

Résumé

Objectif: Cette étude porte sur les conséquences d’un programme d’intervention en groupe concernant l’activité physique et la nutrition sur les connaissances en nutrition et les habitudes alimentaires dans une cohorte de personnes obèses.
Méthodes: Étude quasi expérimentale avec des mesures prises avant et après l’intervention. Cette intervention comprenait une activité physique dirigée par des physiologistes de l’exercice certifiés et un volet d’éducation nutritionnelle dirigé par des diététistes sur une période de 6 mois, suivie de 6 mois d’autogestion. La connaissance de la nutrition et les habitudes alimentaires des participants ont été évaluées à l’aide de l’Évaluation de la nutrition modifiée, du Nutrition Knowledge Survey (sondage sur les connaissances en matière de nutrition) et des Food Choice Questionnaires (questionnaires sur les choix alimentaires) au début de l’étude, après l’intervention de 6 mois et après les 6 mois d’autogestion.
Résultats: Nous avons obtenu des données complètes pour 59 participants (40%) après 12 mois en raison de l’attrition. Les connaissances et les comportements nutritionnels se sont améliorés. Les participants ont déclaré avoir augmenté leur consommation d’aliments sains pendant l’intervention active et maintenu ces changements à l’étape de l’autogestion. La connaissance des aliments sains s’est améliorée. Les participants ont indiqué une plus forte probabilité de choisir des aliments en fonction du contrôle du poids et de leurs propriétés pour la santé.
Conclusions: La connaissance et la consommation rapportée d’aliments plus sains se sont améliorées pendant l’intervention active, et les personnes qui ont terminé le programme ont maintenu cette consommation pendant la période d’autogestion. Les diététistes peuvent jouer un rôle important dans la gestion des patients obèses en contexte de groupe.

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Information & Authors

Information

Published In

cover image Canadian Journal of Dietetic Practice and Research
Canadian Journal of Dietetic Practice and Research
Volume 77Number 4December 2016
Pages: 206 - 209

History

Version of record online: 20 October 2016

Authors

Affiliations

Baukje Miedema PhD
Dalhousie University Family Medicine Teaching Unit, Dr. Everett Chalmers Regional Hospital, Fredericton, NB, Canada
Andrea Bowes PhD
Department of Nursing and Health Sciences, The University of New Brunswick, Saint John, NB Canada
Ryan Hamilton PhD
Department of Psychology, Faculty of Arts, University of New Brunswick, Fredericton, NB, Canada
Stacey Reading PhD
Department of Sport and Exercise Science, Faculty of Science, University of Auckland, Auckland, New Zealand

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