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Open AccessArticle

Importance of Self-Efficacy in Eating Behavior and Physical Activity Change of Overweight and Non-Overweight Adolescent Girls Participating in Healthy Me: A Lifestyle Intervention with Mobile Technology

1
Department of Child and Adolescent Health, Institute of Mother and Child, 17a Kasprzaka St., 01-211 Warsaw, Poland
2
Department of Humanization in Medicine and Sexology, University of Zielona Gora, Collegium Medicum, Energetykow St. 2, 65-729 Zielona Gora, Poland
3
Department of Cardiology, Institute of Mother and Child, 17a Kasprzaka St., 01-211 Warsaw, Poland
*
Author to whom correspondence should be addressed.
Nutrients 2020, 12(7), 2128; https://doi.org/10.3390/nu12072128
Received: 25 June 2020 / Revised: 11 July 2020 / Accepted: 15 July 2020 / Published: 17 July 2020
(This article belongs to the Special Issue Child Obesity and Nutrition Promotion Intervention)
Very little is known about how multicomponent interventions directed to entire populations work in selected groups of adolescents. The aim was to evaluate the effectiveness of the Healthy Me one-year program on changes in healthy eating and physical activity among overweight and non-overweight female students. Randomization involved the allocation of full, partial or null intervention. The randomized field trial was implemented in 48 secondary schools (clusters) all over Poland among 1198 15-year-old girls. In this study, a sample of N = 1111 girls who participated in each evaluation study was analyzed. Using multimedia technologies, efforts were made to improve health behaviors and increase self-efficacy. The main outcome was a health behavior index (HBI), built on the basis of six nutritional indicators and one related to physical activity. HBI was analyzed before and immediately after intervention and at three months’ follow-up, and the HBI change was modeled. Statistical analysis included nonparametric tests and generalized linear models with two-way interactions. Comparing the first and third surveys, in the overweight girls, the HBI index improved by 0.348 (SD = 3.17), while in the non-overweight girls it had worsened. After adjusting for other factors, a significant interaction between body weight status and level of self-efficacy as predictors of HBI changes was confirmed. The program turned out to be more beneficial for overweight girls. View Full-Text
Keywords: healthy lifestyle intervention; school-based intervention; eating behavior; MVPA; overweight and obesity; self-efficacy; adolescent girls healthy lifestyle intervention; school-based intervention; eating behavior; MVPA; overweight and obesity; self-efficacy; adolescent girls
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Dzielska, A.; Mazur, J.; Nałęcz, H.; Oblacińska, A.; Fijałkowska, A. Importance of Self-Efficacy in Eating Behavior and Physical Activity Change of Overweight and Non-Overweight Adolescent Girls Participating in Healthy Me: A Lifestyle Intervention with Mobile Technology. Nutrients 2020, 12, 2128.

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