Intervention Based Exclusively on Stage- Matched Printed EducationalMaterials Regarding Healthy Eating Does Not Result in Changes to Adolescents' Dietary Behavior
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
07/11/2013
07/11/2013
2012
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Resumo |
Purpose. To assess the impact of a six-month stage-based intervention on fruit and vegetable intake, regarding perceived benefits and barriers, and self-efficacy among adolescents. Design. Randomized treatment-control, pre-post design. Subjects/ Setting. Schools were randomized between control and experimental groups. 860 adolescents from ten public schools in Bras ' ilia, Federal District, Brazil were evaluated at baseline; 771 (81%) completed the study. Intervention. Experimental group received monthly magazines and newsletters aimed at promotion of healthy eating. Measures. Self-reported fruit and vegetable intake, stages of change, self-efficacy and decisional balance scores were evaluated at baseline and post-intervention in both groups. Analysis. The effectiveness of the intervention was evaluated using the analysis of covariance model (ANCOVA) and repeated measurement analysis by means of weighted least squares. Comparison between the proportions of adolescents who advanced through the stages during the intervention was performed using the Mantel-Haenszel chi-square test. Results. After adjusting for sex and age, study variables showed no modifications through the proposed intervention. There was no statistical difference in participant mobility in the intervention and control groups between the stages of change, throughout the study. Conclusion. A nutritional intervention based exclusively on distribution of stage-matched printed educational materials was insufficient to change adolescents' dietary behavior. International Life Sciences Institute (ILSI), Brazil University of Brasilia |
Identificador |
SCIENTIFIC WORLD JOURNAL, NEW YORK, v. 31, n. 7, pp. 880-888, OCT, 2012 1537-744X http://www.producao.usp.br/handle/BDPI/43016 10.1100/2012/174640 |
Idioma(s) |
eng |
Publicador |
HINDAWI PUBLISHING CORPORATION NEW YORK |
Relação |
SCIENTIFIC WORLD JOURNAL |
Direitos |
openAccess Copyright HINDAWI PUBLISHING CORPORATION |
Palavras-Chave | #VEGETABLE CONSUMPTION #YOUNG-ADULTS #TRANSTHEORETICAL MODEL #DECISIONAL BALANCE #INCREASES FRUIT #CHILDREN #BARRIERS #OBESITY #INCOME #MULTIDISCIPLINARY SCIENCES |
Tipo |
article original article publishedVersion |