Korean Journal of Community Nutrition

[English]
Effectiveness of a mobile health intervention on weight loss and dietary behavior changes among employees with overweight and obesity: a 12-week intervention study investigating the role of engagement: Imhuei Son, Jiyoun Hong, Young-Hee Han, Bo Jeong Gong, Meng Yuan Zhang, Woori Na, Cheongmin Sohn, Taisun Hyun; Korean J Community Nutr 2023;28(2):141-159. Published online April 30, 2023; DOI: https://doi.org/10.5720/kjcn.2023.28.2.141

Objectives
This study aimed to determine whether a mobile health (mhealth) intervention is effective in reducing weight and changing dietary behavior among employees with overweight and obesity. The study also investigated whether engagement with the intervention affected its effectiveness.
Methods
The intervention involved the use of a dietary coaching app, a wearable device for monitoring physical activity and body composition, and a messenger app for communicating with participants and an intervention manager. A total of 235 employees were recruited for a 12-week intervention from eight workplaces in Korea. Questionnaire surveys, anthropometric measurements, and 24-h dietary recalls were conducted at baseline and after the intervention.
Results
After the intervention, significant decreases in the mean body weight, body mass index, body fat percentage, and waist circumference were observed. Furthermore, the consumption frequencies of multigrain rice and legumes significantly increased, whereas those of pork belly, instant noodles, processed meat, carbonated beverages, and fast food significantly decreased compared with those at baseline. The mean dietary intake of energy and most nutrients also decreased after the intervention. When the participants were categorized into three groups according to their engagement level, significant differences in anthropometric data, dietary behaviors, and energy intake were observed following the intervention, although there were no differences at baseline, indicating that higher engagement level led to greater improvements in weight loss and dietary behavior.
Conclusions
The intervention had positive effects on weight loss and dietary behavior changes, particularly among employees with higher engagement levels. These results indicate the importance of increasing the level of engagement in the intervention to enhance its effectiveness. The mhealth intervention is a promising model for health promotion for busy workers with limited time.

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Improving the nutrition quotient and dietary self-efficacy through personalized goal setting and smartphone-based nutrition counseling among adults in their 20s and 30s
Dahyeon Kim, Dawon Park, Young-Hee Han, Taisun Hyun
Journal of Nutrition and Health.2023; 56(4): 419. CrossRef
Process evaluation of a mobile healthcare program among employees with overweight and obesity: a 12-week intervention study investigating the role of engagement
Imhuei Son, Jiyoun Hong, Young Hee Han, Bo Jeong Gong, Meng Yuan Zhang, Woori Na, Cheongmin Sohn, Taisun Hyun
Korean Journal of Community Nutrition.2023; 28(6): 466. CrossRef
Systematic Review on the Study of the Childhood and Adolescent Obesity in Korea: Dietary Risk Factors
Eun Jeong Heo, Jae Eun Shim, Eun Young Yoon
Korean Journal of Community Nutrition.2017; 22(3): 191. CrossRef

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[Korean]
Program Evaluation using the RE-AIM Framework: A Systematic Review and Application to a Pilot Health Promotion Program for Children: Ji-Eun Lee, Jae Eun Shim, Kirang Kim, Jae-Heon Kang, Ji-Yun Hwang; Korean J Community Nutr 2022;27(4):296-308. Published online August 31, 2022; DOI: https://doi.org/10.5720/kjcn.2022.27.4.296

Abstract PDF: Objectives
This study aimed to develop evaluation criteria for the elementary-school-based health promotion program using the RE-AIM framework and to examine their feasibility.
Methods
Previous evaluation studies on health interventions for elementary-school students using the RE-AIM framework were reviewed systematically to identify appropriate evaluation criteria. A diet and physical activity intervention based on the transtheoretical model was implemented in a pilot study using the “Happy Me” application. The feasibility of using the RE-AIM framework to evaluate it was examined.
Results
The review yielded the following evaluation criteria: “reach,” the ratio of participants out of the total target population; “efficacy/effectiveness,” the difference in outcomes between the intervention and control groups, or between a pre- and post-test; “adoption,” the rate of use of the program and participation in the next stage of the program; “implementation,” the progress on the program components; “maintenance,” the participants’ and teachers’ intention to continue using the program. The pilot study reached 76.6% of the targeted population. The intake of sugar-sweetened beverages decreased (P < 0.0001), and the duration of walking increased (P < 0.0001). Other indicators could not be evaluated; therefore, potential indicators were suggested.
Conclusions
This study produced feasible evaluation criteria for elementary-school-based health promotion using the RE-AIM framework. Nevertheless, the feasibility needs to be validated with a broader range of studies and long-term interventions.

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[Korean]
Development and Validation of a Questionnaire on the Feasibility of a Mobile Dietary Self-Monitoring Application: Heejin Lee, Jeong Sun Ahn, Jung Eun Lee; Korean J Community Nutr 2022;27(2):146-157. Published online April 30, 2022; DOI: https://doi.org/10.5720/kjcn.2022.27.2.146

Abstract PDF: Objectives
This study aimed to develop and assess the content validity and internal consistency of a questionnaire on the feasibility of mobile dietary self-monitoring applications.
Methods
We developed a feasibility questionnaire to assess the overall usage, convenience, usefulness, and satisfaction of mobile dietary applications. The initial draft of the questionnaire contained 17 items with yes/no, multiple-choice, and open-ended questions and 52 items on 5-point Likert scales. To validate the content, ten experts evaluated the relevance of the items for each subscale using a 5-point scale. We calculated the item-level content validity index (I-CVI) and scale-level content validity index (S-CVI). A total of 102 adults answered the questionnaires which reflected the experts' reviews. We conducted an exploratory factor analysis to determine the underlying structure of responses and categorized convenience, usefulness, and satisfaction. We also calculated Cronbach's alpha coefficient to examine the internal consistency of items in each subscale.
Results
The S-CVI score of the items was 0.86, and we removed items with an I-CVI score of < 0.80. We combined, revised, or separated some remaining items and added one item as per the experts' comments. As a result, we included 16 items about overall usage and 42 sub-questions. Based on the responses of the 102 adults, we performed exploratory factor analysis using the principal axis method. We retained items with a factor loading of > 0.40, resulting in a final set of 35 questions (convenience: 15, usefulness: 12, satisfaction: 8 items). The Cronbach's alpha values of the three scales were 0.93, 0.91, and 0.91 for 1) usefulness, 2) convenience, and 3) satisfaction, respectively.
Conclusions
We developed a feasibility questionnaire for mobile dietary self-monitoring applications and examined its content validity and internal consistency. Our questionnaire has the potential to measure the feasibility of mobile dietary self-monitoring applications.

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[English]
The Perception of Laymen and Experts Toward Mobile Applications for Self-monitoring of Diet Based on in-depth Interviews and Focus Group Interviews: Jeong Sun Ahn, Sihan Song, Sang Eun Moon, Sejin Kim, Jung Eun Lee; Korean J Community Nutr 2018;23(3):202-215. Published online June 30, 2018; DOI: https://doi.org/10.5720/kjcn.2018.23.3.202

Abstract PDF PubReader

OBJECTIVES
We conducted a qualitative study to explore the feasibility of mobile applications for self-monitoring of diet.
METHODS
We conducted in-depth and focus group interviews with eight laymen who had used mobile dietary applications and eight experts. Interviews were audio-recorded and analyzed using an open coding method.
RESULTS
The qualitative data of our study revealed two key themes: (1) perceptions, opinions and attitudes towards mobile applications of self-monitoring of diet and (2) future directions to improve mobile applications.
CONCLUSIONS
Our qualitative study suggested the potential use of mobile applications as a food-tracking and dietary monitoring tool and the need for improved mobile applications for self-monitoring of diet. The results of our study may provide insights into how to technically improve mobile applications for self-monitoring of diet, how to utilize dietary data generated through mobile applications, and how to improve individual's health though mobile applications.

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NBH (Nutritious Balanced and Healthy) – An AI Enhanced Fitness Analyzer
Indhumathi Nagarajan, ABITHA V, AKSHAYA P, DHANSARA S, DHARANGINEE K R
SSRN Electronic Journal.2024;[Epub] CrossRef
Diet-Related Mobile Apps to Promote Healthy Eating and Proper Nutrition: A Content Analysis and Quality Assessment
Jihye Choi, Chongwook Chung, Hyekyung Woo
International Journal of Environmental Research and Public Health.2021; 18(7): 3496. CrossRef
Application and evaluation of mobile nutrition management service for breast cancer patients
Ji Hee Choi, Seon-Joo Park, Hee Kwon, Hae-Jeung Lee
Journal of Nutrition and Health.2020; 53(1): 83. CrossRef

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[English]
Development and User Satisfaction of a Mobile Phone Application for Image-based Dietary Assessment: Seo Yoon Kim, Sang Jin Chung; Korean J Community Nutr 2017;22(6):485-494. Published online December 31, 2017; DOI: https://doi.org/10.5720/kjcn.2017.22.6.485

Abstract PDF PubReader

OBJECTIVES
The objective of this study was to develop mobile phone application for image-based dietary assessment and evaluate satisfaction regarding respondent's use of the mobile phone application.
METHODS
We developed a mobile phone application to assess dietary intakes using 24 hour dietary recall. After initial development, application was reviewed by ten adults and revised based on their comments. We recruited 192 volunteers (92 males, 100 females) to use the mobile phone application and to respond to a satisfaction survey. Participants were instructed to use the mobile phone application with fiducial marker five centimeter in width, length and two centimeter height at each eating occasion during designated 4 days, capturing 45Â° angle and 90Â° angle images of all food and beverage items before and after consumption. After using the mobile phone application for 4 days, participants were asked to complete an online questionnaire on the satisfaction of the mobile phone app. User satisfaction items composed of 12 questions of application user interface, 8 questions of emotional response, 9 questions of eating behavior in 5 likert scale. Participants were also asked to provide additional open-ended comments on the use of mobile phone application. Statistical analysis was performed by using the SPSS 23.0 (Statistical Package for the Social Science).
RESULTS
The average user interface score was 2.82 Â± 1.08, which was close to the â€˜normalâ€™ response. Responses for emotion and eating behavior also were borderline to the â€˜normalâ€™.
CONCLUSIONS
This study found that the mobile phone application using 24-hour recall was acceptable to be used to assess dietary intakes for several days. However, there should be a need for such technology to be user-oriented instead of researcher-oriented. Easy and cost-effective new technology is needed for estimating the amounts of food eaten automatically when the photos are taken.

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Diet status of college students evaluated by applying the photographic analysis method
Chae Hong Lee, Kyung A Lee
Journal of Nutrition and Health.2023; 56(4): 439. CrossRef
Validity of Estimating Sodium Intake using a Mobile Phone Application of 24-hour Dietary Recall with Meal Photos
Seo-Yoon Kim, Sang-Jin Chung
Korean Journal of Community Nutrition.2020; 25(4): 317. CrossRef

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[English]
A study on Consumer's Needs for Development of Diet Guide Application for Pregnant Women: Sook Bae Kim, Jeong Weon Kim, Mi Hyun Kim, Young Sook Cho, Se Na Kim, Hee Sook Lim, Soon Kyung Kim; Korean J Community Nutr 2013;18(6):588-598. Published online December 31, 2013; DOI: https://doi.org/10.5720/kjcn.2013.18.6.588

Abstract PDF PubReader

This study was conducted to assess needs of educational mobile application (App) development for nutritional management and information on pregnant women. A total of 105 pregnant women were investigated on general characteristics, dietary habits, health behavior and needs for contents and composition of the application. The mean age of the subjects was 31.9 years and the mean gestation period was 25.4 weeks. The rate of skipping meal was 39.0% and the rate of irregular meal time was 46.6%. The consciousness of the meal as balanced nutrition and health was 19.9%. Eating out at least forth a week was 35.3%. Obtaining information about pregnancy and childbirth were internet (35.3%), hospital or health center (19.9%), books (17.1%), experience (15.2%), mobile (8.6%) and friends or acquaintances (4.8%). If the application is developed, subject replied 'frequently use' (51.4%), 'when needed' (47.6%) respectively. The favour topic in developing application were 'nutrition information of pregnant and fetal' (36.2%), 'weight management, feeding' (33.3%), 'food choice and cooking' (21.9%), 'shopping' (5.7%), 'example of menu' (1.9%), 'effect of smoking, drinking, exercising' (1.0%). The favorite content was 'include sufficient amount about information' (44.8%). Depending on the age and education level, the best age for pregnancy group have significantly higher ability for utilize and information gathering than old age pregnant group. Also the best age for pregnancy group have high demands of design, convenience and various contents in App development. Therefore, mobile application (App) for pregnant women could be widely used as an effective dietary guide.

Citations

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A Keyword Analysis Study on Postpartum Obesity Using Big Data
Hyung-ui Baik, Bo-Kyung Seo, Gyu-Ri Kim, Jung-Eun Ku
International Journal of Environmental Research and Public Health.2021; 18(16): 8807. CrossRef
A comparative study on nutritional knowledge and dietary behavior between Korean and Chinese postpartum women
Sohyun Kim, Heewon L Gray, Jia Li, Haeryun Park, Youngmi Lee, Kyunghee Song
Nutrition Research and Practice.2019; 13(6): 535. CrossRef
Development of Education Materials as a Card News Format for Nutrition Management of Pregnant and Lactating Women
Young-Hee Han, Jung Hyun Kim, Min Jun Lee, Taeksang Yoo, Taisun Hyun
Korean Journal of Community Nutrition.2017; 22(3): 248. CrossRef
Development of Nutrition Education Contents for Pregnant Women Based on Effective Communication Strategies
Taeksang Yoo, Young-Hee Han, Jung Hyun Kim, Min Jun Lee, Taisun Hyun
Korean Journal of Community Nutrition.2017; 22(2): 115. CrossRef
Comparison on the Use of Smartphone Application between International and Korean Pregnant Women
Hyeon Jihye, Syed Nitas Iftekhar
International Journal of Information and Education Technology.2016; 6(5): 404. CrossRef
Comparing Nutrition Knowledge, Eating Habits, and Neonatal Health Status of Primipara for Pregnant Women of Advanced Maternal Age Compared to Those of Younger Ages
Sun-Ok Lee, Kyung-Yeon Park, Mi-Jung Han
Korean Journal of Women Health Nursing.2015; 21(4): 253. CrossRef

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[English]
Development of 'Children's Food Avatar' Application for Dietary Education: Joo Han Cho, Sook Bae Kim, Soon Kyung Kim, Mi Hyun Kim, Gap Soo Kim, Se Na Kim, So Young Kim, Jeong Weon Kim; Korean J Community Nutr 2013;18(4):299-311. Published online August 31, 2013; DOI: https://doi.org/10.5720/kjcn.2013.18.4.299

Abstract PDF PubReader

An educational application (App) called 'Children's Food Avatar' was developed in this study by using a food DB of nutrition and functionality from Rural Development Administration (RDA) as a smart-learning mobile device for elementary school students. This App was designed for the development of children's desirable dietary habits through an on-line activity of food choices for a meal from food DB of RDA provided as Green Water Mill guide. A customized avatar system was introduced as an element of fun and interactive animation for children which provides nutritional evaluation of selected foods by changing its appearance, facial look, and speech balloon, and consequently providing chances of correcting their food choices for balanced diet. In addition, nutrition information menu was included in the App to help children understand various nutrients, their function and healthy dietary life. When the App was applied to 54 elementary school students for a week in November, 2012, significant increases in the levels of knowledge, attitude and behavior in their diet were observed compared with those of the control group (p < 0.05, 0.01). Both elementary students and teachers showed high levels of satisfaction ranging from 4.30 to 4.89 for the App, therefore, it could be widely used for the dietary education for elementary school students as a smart-learning device.

Citations

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A Qualitative Study on the Potential Utilization of a Mobile Phone for Obesity Management in Elementary-School Children : Parents Perspective
Bo Young Lee, Mi-Young Park, Kirang Kim, Jea Eun Shim, Ji-Yun Hwang
Korean Journal of Community Nutrition.2019; 24(2): 117. CrossRef
Effects of Nutrition Education Using Dietary Guidebook in Higher Grade Elementary Students of Jeonbuk Area
Mi-Ran Park, Sook-Bae Kim
Korean Journal of Community Nutrition.2018; 23(1): 13. CrossRef
Development of Education Materials as a Card News Format for Nutrition Management of Pregnant and Lactating Women
Young-Hee Han, Jung Hyun Kim, Min Jun Lee, Taeksang Yoo, Taisun Hyun
Korean Journal of Community Nutrition.2017; 22(3): 248. CrossRef
A study on Consumer's Needs for Development of Diet Guide Application for Pregnant Women
Sook-Bae Kim, Jeong-Weon Kim, Mi-Hyun Kim, Young-Sook Cho, Se-Na Kim, Hee-Sook Lim, Soon-Kyung Kim
Korean Journal of Community Nutrition.2013; 18(6): 588. CrossRef

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[English]
Importance, Support and Application for Contract Foodservice Management Company's Infra-System in the Viewpoint of Headquarters and Branch Office: Il Sun Yang, Moon Kyung Park, Kyung Soo Han, In Sook Chae, So Hyun Park, Hae Young Lee; Korean J Community Nutr 2004;9(2):233-240. Published online April 30, 2004

Abstract PDF: This study was design to grope the suggestions leading synergic effects by bridging the gap between headquarters and branch office, and so to identify the infra-system of contract foodservice management company (CFMC) necessary for operating any kind of branch office including school, hospital and business and industry (B&I). Among 8 categories consisted of infra-system in CFMC, 'C8. Evaluation & analysis for branch office's operation' was the most important category in the headquarter's viewpoint, while 'C3. Sanitation management system' was the most important category in branch office's viewpoint. In support and application, 'C3. Sanitation management system' was the highest category in both headquarters and branch offices including school, hospital and B&I. As a result of analysis on gap between main and branch office in importance, support and application in 8 categories, the efforts of communication and community of perception for infrastructure were needed, because 'C4. Education & training for human resource management (HRM) system' and 'C8. Evaluation & analysis for branch office's operation' in importance, 'C2. Menu management system', 'C4. Education & training for HRM system', 'C6. Facility & utility support system' and 'C8. Evaluation & analysis for branch office's operation' in support had a gap. Correlation analysis to grasp the relation between importance of infra-system and headquarters' support or branch office's application showed that headquarters's importance and support were correlated positively in 'C3. Sanitation management system', 'C6. Facility & utility support system', 'C7. Customer satisfaction management system' and 'C8. Evaluation & analysis for branch office's operation' and branch office's importance and application were correlated positively in 'C1. Procurement & food processing system', 'C5. Management Information system', 'C7. Customer satisfaction management system' and 'C8. Evaluation & analysis for branch office's operation'. Lastly, 'C6. Facility & utility support system' in the branch office of school and hospital and 'C2. Menu management system' in the branch office of B&I were high in importance, low in support and application, therefore intensive support for these categories was needed. In conclusion, continuous check and improvement for categories, which were identified as an urgent problems to be solved in this study, among infra-structure qualifying for CFMC,would enable contract foodservice industry that has grown quantitatively till now to grow qualitatively.

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[English]
Study on Hygiene Knowledge and Recognition on Job Performance Levels for HACCP Application for Employees at Contract Foodservices: Hye Kyung Moon, Jam Ok Hwang; Korean J Community Nutr 2003;8(1):71-82. Published online February 28, 2003

Abstract PDF: In this study, hygiene knowledge and recognition on job performance levels of foodservice employees at different degrees of HACCP application had been compared. As for the comparison of hygiene knowledge for HACCP application, foodservice employees at "Appointed" showed significantly higher HACCP knowledge (p < 0.01). As for recognition on job performance levels, this status also assured the significant difference between the comparison groups (p < 0.01): "Appointed" showed the highest point of 4.24 while "Voluntary applying" and "Non-applying" showed 3.39 and 2.53 respectively. The "Appointed" group showed the well performance of most of the surveyed items. "Voluntary applying" group showed unsatisfactory performance in various log recordings and some part of surveyed items. As for "Non-applying", many items were performed under the average score as they do not apply HACCP.

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