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http://dx.doi.org/10.4163/jnh.2019.52.3.297

Relationship among the use of food-related content, dietary behaviors, and dietary self-efficacy of high school students in Seoul and Gyeonggi areas  

Oh, Min-Hwan (Major in Nutrition Education, Graduate School of Education, Sookmyung Women's University)
Hong, Kyungeui (Department of Food and Nutrition, Sookmyung Women's University)
Kim, Sung-Eun (Department of Food and Nutrition, Sookmyung Women's University)
Publication Information
Journal of Nutrition and Health / v.52, no.3, 2019 , pp. 297-309 More about this Journal
Abstract
Purpose: This study examined the relationship among the use of food-related content (FRC), dietary behaviors, and dietary self-efficacy to demonstrate the need for nutrition education to help adolescents build healthy eating habits and provide evidence for developing nutrition education programs for adolescents. Methods: Three hundred and eighty-one high school students in Seoul and Gyeonggi areas participated in the study. The subjects were divided into three groups (low, medium, and high) according to the level of use of the FRC, and their general characteristics, dietary behaviors, and dietary self-efficacy were analyzed. Correlation analysis was performed between FRC usage, dietary behaviors, and dietary self-efficacy, and the mediating effects of dietary self-efficacy on the relationship between the level of the use of FRC and dietary behaviors were estimated. Results: A higher level of FRC usage was associated with an increased daily cost of eating out and snacking, but no difference was observed in the BMI range. The subjects in a group with a high level of FRC usage ate convenience store or instant foods instead of homemade meals (p = 0.033), had a late-night meal or snack (p = 0.024), and turned to emotional eating under stress (p < 0.001) more than those in the low level group. In addition, the high level group checked the nutrition facts label more carefully when purchasing processed foods (p = 0.016) and exercised at least 30 minutes daily, not considering physical education classes (p = 0.057). The higher level of FRC use, the lower the dietary self-efficacy, whereby the subscales 'environmental stimulus control efficacy' and 'affective factor control efficacy' showed complete mediating effects. Conclusion: Given that FRC has been increased recently, adolescents are in need of support to help them control and enhance their dietary self-efficacy as well as develop healthy dietary behaviors through proper nutrition education programs.
Keywords
adolescents; food-related content; dietary behaviors; dietary self-efficacy;
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