Bianca C Braga, John Long, Sara Maksi, Pejman K Sajjadi, Alexander Klippel, Travis D Masterson
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引用次数: 0
Abstract
Objective: To compare the impact of a nutrition education program delivered in person and within an immersive virtual reality (iVR) nutrition education experience application called immersive virtual alimentation and nutrition (IVAN). To compare IVAN with its updated version, IVAN 2, and develop a portion size estimation task for use within iVR.
Design: Two randomized controlled experiments.
Setting: Laboratory.
Participants: Ninety-two adults (aged 29 ± 14) years) enrolled. In experiment 1, 25 adults were randomized to in-person and 20 to the IVAN condition. In experiment 2, 25 adults were randomized to IVAN 1, and 22 adults were randomized to IVAN 2 conditions.
Intervention: Nutrition education materials delivered in person by IVAN 1 and IVAN 2.
Main outcome measures: Changes in portion control self-efficacy and portion-size overestimation.
Analysis: Linear mixed-effects models and t tests.
Results: In experiment 1, the portion size self-efficacy improved for both conditions (B = 2.40; SE = 0.61; P <0.001) with no difference between conditions. In experiment 2, the portion size self-efficacy improved for both conditions (B = 1.23; SE = 0.55; P = 0.03), as did the portion-size overestimation value (B = -21.51; SE = 4.97; P <0.001), with no difference between conditions.
Conclusions and implications: Portion-size education material shows similar efficacy delivered through IVAN and in person. The efficacy of IVAN 2 was higher than IVAN 1. Portion size estimation tasks within iVR may be useful for the assessment of participants' ability to estimate portion sizes.
期刊介绍：
The Journal of Nutrition Education and Behavior (JNEB), the official journal of the Society for Nutrition Education and Behavior, is a refereed, scientific periodical that serves as a global resource for all professionals with an interest in nutrition education; nutrition and physical activity behavior theories and intervention outcomes; complementary and alternative medicine related to nutrition behaviors; food environment; food, nutrition, and physical activity communication strategies including technology; nutrition-related economics; food safety education; and scholarship of learning related to these areas.
The purpose of JNEB is to document and disseminate original research and emerging issues and practices relevant to these areas worldwide. The Journal of Nutrition Education and Behavior welcomes evidence-based manuscripts that provide new insights and useful findings related to nutrition education research, practice and policy. The content areas of JNEB reflect the diverse interests in nutrition and physical activity related to public health, nutritional sciences, education, behavioral economics, family and consumer sciences, and eHealth, including the interests of community-based nutrition-practitioners. As the Society''s official journal, JNEB also includes policy statements, issue perspectives, position papers, and member communications.
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