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Computational and Mathematical Methods in Medicine
Volume 2014, Article ID 575424, 7 pages
Research Article

An Investigation of Factors Affecting Elementary School Students’ BMI Values Based on the System Dynamics Modeling

1Department of Information Management, Yu Da University of Science and Technology, Miaoli 36143, Taiwan
2Department of Leisure Recreation and Travel Management, Toko University, Chiayi 61363, Taiwan
3Department of Leisure Management, Yu Da University of Science and Technology, Miaoli 36143, Taiwan

Received 15 September 2013; Accepted 16 January 2014; Published 20 February 2014

Academic Editor: Henggui Zhang

Copyright © 2014 Tian-Syung Lan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This study used system dynamics method to investigate the factors affecting elementary school students’ BMI values. The construction of the dynamic model is divided into the qualitative causal loop and the quantitative system dynamics modeling. According to the system dynamics modeling, this study consisted of research on the four dimensions: student’s personal life style, diet-relevant parenting behaviors, advocacy and implementation of school nutrition education, and students’ peer interaction. The results of this study showed that students with more adequate health concepts usually have better eating behaviors and consequently have less chance of becoming obese. In addition, this study also verified that educational attainment and socioeconomic status of parents have a positive correlation with students’ amounts of physical activity, and nutrition education has a prominent influence on changing students’ high-calorie diets.