Korean Journal of Community Nutrition

Educational Materials

[English]
Development of a campus-based intervention program to strengthen food literacy among university students: A qualitative formative study: Eunji Ko, Eunjin Jang, Jiwon Sim, Minjeong Jeong, Sohyun Park; Korean J Community Nutr 2023;28(6):495-508. Published online December 31, 2023; DOI: https://doi.org/10.5720/kjcn.2023.28.6.495

Abstract PDF: Objectives
This study aimed to develop a campus-based intervention program to enhance food literacy (FL) among university students.
Methods
In the initial phase, we conducted a literature review of FL intervention studies and held in-depth interviews with university students to identify facilitators and barriers to improving and practicing FL. Expert counseling sessions were conducted with nutrition education, marketing, and service design professionals. The results of this phase led to the creation of an initial curriculum draft. In the second phase, a follow-up survey was conducted with young adults to assess the acceptability of the developed curriculum. After the follow-up survey, additional meetings were conducted with the aforementioned experts, and the curriculum was further refined based on their input.
Results
An 11-week FL intervention program was devised using constructs from the Social Cognitive Theory. The weekly curriculum consisted of 90-min theory-based and 90-min hands-on experience sessions. Three primary aspects of FL were covered: nutrition and food safety, cultural and relational dimensions, and socio-ecological aspects. Program highlights included cooking sessions for crafting traditional Korean desserts, lectures on animal welfare, insights into zero-waste practices, and communal eating experiences. Based on the study team’s previous research, the program also addressed mindful eating, helping participants understand the relationship with their eating habits, and providing strategies to manage negative emotions without resorting to food. Yoga sessions and local farm visits were incorporated into the curriculum to promote holistic well-being.
Conclusions
This study elucidated the comprehensive process of creating a campus-based curriculum to enhance FL among university students, a group particularly susceptible to problematic eating behaviors and low FL levels. The developed program can serve as a blueprint for adaptation to other campuses seeking to bolster students’ FL.

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Research Articles

[Korean]
Dietary sodium and potassium intake of Koreans estimated using 2 different sources of their contents in foods, Food & Nutrient Database and the Korean Total Diet Study : a comparative study: Jee Yeon Lee, Sung Ok Kwon, Soo Hyun Lee, Min Jeong Seo, Gae Ho Lee, Cho-il Kim; Korean J Community Nutr 2023;28(3):235-244. Published online June 30, 2023; DOI: https://doi.org/10.5720/kjcn.2023.28.3.235

Abstract PDF: Objectives
Based on the results from the Korean Total Diet Study (KTDS), the sodium (Na) and potassium (K) intake of Koreans were estimated and compared with intake estimates from the Food & Nutrient Database (FNDB), as in the Korea National Health and Nutrition Examination Survey (KNHANES) to verify the validity of these estimates.
Methods
One hundred and thirty-four representative foods (RFs) covering 92.5% of the total food intake of Koreans were selected, and 228 pairs of corresponding ‘RF x representative cooking method’ were derived by reflecting the methods used mainly in terms of frequency and quantity in their cooking. RF samples were collected from three cities with a larger population size in three regions (nine cities) nationwide, and six composite samples were made for each RF, considering its regional and/or seasonal characteristics. One thousand three hundred and sixty-eight ‘RF x representative cooking method’ pair samples were prepared, and the Na and K contents were assessed using inductively coupled plasma atomic emission spectrometry (ICP-MS). The Na and K intake of the Korean population was estimated by linking the content with the food intake data from the 7th KNHANES.
Results
The mean Na and K intake of Koreans were 2,807.4 mg and 2,335.0 mg per person per day, respectively. A comparison with the Na and K intake from KNHANES, including only RFs of KTDS, showed comparable results with less than 5% variation. While the contribution and ranking of food items to Na intake were similar between KNHANES and KTDS, there were differences in K intake. This was attributed to the large discrepancies in the K content of rice and coffee between KTDS results and the values in the 9th Revision of the National Food Composition Table used in KNHANES.
Conclusions
The Na and K intake of Koreans estimated based on the KTDS, which performed nutrient analysis on samples prepared to a ‘table-ready’ state using foods of the representative collection, was similar and comparable with that of KNHANES. This supports the validity and usefulness of FNDB-based nutrient intake estimation at the population level. The list of nutrients studied in KTDS is expected to be expanded, allowing for intake estimation of nutrients with currently insufficient or absent information in the FNDBs in use.

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[Korean]
Dietary Iron Intake of Koreans Estimated using 2 Different Sources of Iron Contents are Comparable: Food & Nutrient Database and Iron Contents of Cooked Foods in the Korean Total Diet Study: Jeeyeon Lee, Sung Ok Kwon, Yoonjae Yeoh, Min Jeong Seo, Gae Ho Lee, Cho-il Kim; Korean J Community Nutr 2022;27(3):245-253. Published online June 30, 2022; DOI: https://doi.org/10.5720/kjcn.2022.27.3.245

Abstract PDF

Objectives
This study was conducted to find out if the dietary iron intake of Koreans estimated by 2 different methods (iron content sources) using the food intake data from the Korea National Health and Nutrition Examination Survey (KNHANES) are comparable. One method was based on the KNHANES's Food & Nutrient Database (FND) derived mainly from the Korean Food Composition Table and the other used the iron content (IC) of food samples processed in the Korean Total Diet Study (KTDS).
Methods
Dietary intake data from the 2013-2016 KNHANES was used to select representative foods (RFs) in KTDS for iron analysis. Selection of the RFs and cooking methods for each RF (RF × cooking method pair) was performed according to the ‘Guidebook for Korean Total Diet Studies’ and resulted in a total of 132 RFs and 224 ‘RF × cooking method’ pairs. RFs were collected in 9 metropolitan cities nationwide once or twice (for those with seasonality) in 2018 and made into 6 composites each, based on the origin and season prior to cooking. Then, the RF composites prepared to a ‘table ready’ state for KTDS were analyzed by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). Dietary iron intake of the Korean population was estimated using only RFs’ intake data based on the 2 sources of iron content, namely FND-KNHANES and IC-KTDS.
Results
RFs in KTDS covered 92.0% of total food intake of Koreans in the 2016-2018 KNHANES. Mean iron intake of Koreans was 7.77 mg/person/day by IC-KTDS vs 9.73 mg/person/day by FND-KNHANES. The major food groups contributing to iron intake were meats (21.7%), vegetables (20.5%), and grains & cereals (13.4%) as per IC-KTDS. On the other hand, the latter source (FND-KNHANES) resulted in a very different profile: grains & cereals (31.1%), vegetables (16.8%), and meats (15.3%). While the top iron source was beef, accounting for 8.6% in the former, it was polished rice (19.2%) in the latter. There was a 10-fold difference in the iron content of polished rice between 2 sources that iron intakes excluding the contribution by polished rice resulted in very similar values: 7.58 mg/person/day by IC-KTDS and 7.86 mg/person/day by FNDKNHANES.
Conclusions
This study revealed that the dietary iron intake estimated by 2 different methods were quite comparable, excluding one RF, namely polished rice. KTDS was thus proven to be a useful tool in estimating a ‘closer-to-real’ dietary intake of nutrients for Koreans and further research on various nutrients is warranted.

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Dietary sodium and potassium intake of Koreans estimated using 2 different sources of their contents in foods, Food & Nutrient Database and the Korean Total Diet Study: a comparative study
Jee Yeon Lee, Sung Ok Kwon, Soo Hyun Lee, Min Jeong Seo, Gae Ho Lee, Cho-il Kim
Korean Journal of Community Nutrition.2023; 28(3): 235. CrossRef

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Review

[English]
Defining Food Literacy and Its Application to Nutrition Interventions: A scoping Review: Hye lim Yoo, Eun bin Jo, Kirang Kim, Sohyun Park; Korean J Community Nutr 2021;26(2):77-92. Published online April 30, 2021; DOI: https://doi.org/10.5720/kjcn.2021.26.2.77

Abstract PDF

Objectives
Food literacy (FL) can be an important concept that embodies the nutritional capabilities of individuals. The purpose of this study was to introduce the definition and core elements of FL from previous literature, to summarize measurement tools and intervention programs with FL, and to suggest the direction of future research and programs to integrate the concept of FL. Methods: The literature review was conducted through PubMed and Google Scholar databases by combining the search term ‘food literacy’ with ‘definition’, ‘measurement’, ‘questionnaire’, ‘intervention’, and ‘program’. Among the 94 papers primarily reviewed 31 manuscripts that suited the purpose of the study were used for analyses. Results: There is no consensus on the definition of FL that encompasses the multidimensional aspects of the concept. The definitions of FL were slightly different depending on the authors, and the interpretation of the core elements also varied. Based on the review, we propose a framework of FL that is in line with the current discussion among international researchers. This focuses on the core elements adapted from health literacy, namely functional, interactive, and critical FL. Specifically, we suggest some detailed elements for interactive and critical FL, which were often the subject of divergent views among researchers in previous literature. We found that most of the tools in the reviewed literature provided information on validity and reliability and were developed for a specific target population. Also, most of the tools were focused on functional FL. Similarly, most of the interventions targeted functional FL. Conclusions: This study reviewed the definition and core elements of FL, available measurement tools, and intervention programs using validated tools. We propose the development of tools with sound reliability and validity that encompass the three core elements of FL for different age groups. This will help to understand whether improving food literacy can translate into better nutritional intake and health status among individuals and communities.

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Development of an evaluation tool for dietary guideline adherence in the elderly
Young-Suk Lim, Ji Soo Oh, Hye-Young Kim
Journal of Nutrition and Health.2024; 57(1): 1. CrossRef
The development, psychometric properties and refinement of a food literacy scale for specific and general application
Hennie Fisher, Marietjie Potgieter
International Journal of Gastronomy and Food Science.2024; 35: 100862. CrossRef
Status of Food Literacy and Association with the Nutrition Quotient among Korean Adults
Geum-Bi Ryu, Young-Ran Heo
Human Ecology Research.2024; 62(3): 399. CrossRef
Who has a high level of food literacy, and who does not?: a qualitative study of college students in South Korea
Hyelim Yoo, Eunbin Jo, Hyeongyeong Lee, Eunji Ko, Eunjin Jang, Jiwon Sim, Sohyun Park
Nutrition Research and Practice.2023; 17(6): 1155. CrossRef
Development of a campus-based intervention program to strengthen food literacy among university students: A qualitative formative study
Eunji Ko, Eunjin Jang, Jiwon Sim, Minjeong Jeong, Sohyun Park
Korean Journal of Community Nutrition.2023; 28(6): 495. CrossRef
Food literacy and its relationship with food intake: a comparison between adults and older adults using 2021 Seoul Food Survey data
Seulgi Lee, Sohyun Park, Kirang Kim
Epidemiology and Health.2023; 45: e2023062. CrossRef
Nutrition and Food Literacy in the MENA Region: A Review to Inform Nutrition Research and Policy Makers
Hala Mohsen, Yonna Sacre, Lara Hanna-Wakim, Maha Hoteit
International Journal of Environmental Research and Public Health.2022; 19(16): 10190. CrossRef
Development of a Food Literacy Assessment Tool for Healthy, Joyful, and Sustainable Diet in South Korea
Hyelim Yoo, Eunbin Jo, Hyeongyeong Lee, Sohyun Park
Nutrients.2022; 14(7): 1507. CrossRef
Effects of University Students’ Perceived Food Literacy on Ecological Eating Behavior towards Sustainability
Yoojin Lee, Taehee Kim, Hyosun Jung
Sustainability.2022; 14(9): 5242. CrossRef
The Relationships between Food Literacy, Health Promotion Literacy and Healthy Eating Habits among Young Adults in South Korea
Yoojin Lee, Taehee Kim, Hyosun Jung
Foods.2022; 11(16): 2467. CrossRef

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Research Articles

[English]
Estimation of Dietary Iodine Intake of Koreans through a Total Diet Study (TDS): Jeeyeon Lee, Yoonjae Yeoh, Min Jeong Seo, Gae Ho Lee, Cho-il Kim; Korean J Community Nutr 2021;26(1):48-55. Published online February 28, 2021; DOI: https://doi.org/10.5720/kjcn.2021.26.1.48

Abstract PDF

Objectives
This study was conducted to estimate the dietary iodine intake of Koreans by a Total Diet Study (TDS) which provides ‘closer-to-real’ estimates of exposure to hazardous materials and nutrients through an analysis of table-ready (cooked) samples of foods. Methods: Dietary intake data from 2013-2017 Korea National Health and Nutrition Examination Survey (KNHANES) was used to select representative foods (RFs) for iodine analysis. A total of 115 RFs were selected and 158 ‘RF × cooking method-combination’ pairs were derived by pairing each RF to corresponding cooking method(s) used more frequently. RFs were collected from 9 mega-markets in 9 metropolitan cities nationwide and mixed into composites prior to cooking preparation to a ‘table ready’ state for iodine analysis by inductively coupled plasma mass spectrometry. Iodine intake of Koreans was estimated based on the food intake data of the 2016-2018 KNHANES. Results: High iodine content was detected in seaweeds such as sea mustard and kelp. The mean iodine intake/capita/day was 418.4 ㎍ and the median value was 129.0 ㎍. Seaweeds contributed to 77.4% of the total iodine intake and the contribution by food item was as follows: sea mustard (44.0%), kelp (20.4%), laver (13.1%), milk (3.9%), egg (3.5%). Compared to the Dietary Reference Intakes for Koreans 2020, the proportion of people with iodine intake exceeding the tolerable upper intake level or below the estimated average requirement was high in the physiologically vulnerable groups (infants, children, pregnant women, and lactating women). Conclusions: The results, drawn from a TDS, are regarded closer to real estimates for iodine intake of Koreans compared with values in existing literature, which were based on a very limited variety of foods. On the other hand, it seems necessary to seek out solutions for the problematic iodine intake among physiologically vulnerable groups through in-depth analyses on food intake data collected with significant scale & quality.

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Iodine intake from brown seaweed and the related nutritional risk assessment in Koreans
Sung Ok Kwon, Kwang-Il Kwon, Mi-Young Lee, Hye Young Lee, Cho-il Kim
Nutrition Research and Practice.2024; 18(3): 412. CrossRef
High intakes of iodine among women during pregnancy and the postpartum period has no adverse effect on thyroid function
Dal Lae Ju, Sun Wook Cho, Chae Won Chung, Young Ah Lee, Gi Jeong Cheon, Young Joo Park, Choong Ho Shin, Jong Kwan Jun, June-Key Chung, Sue K. Park, YoonJu Song
European Journal of Nutrition.2023; 62(1): 239. CrossRef
Interactions between Polygenetic Variants and Lifestyle Factors in Hypothyroidism: A Hospital-Based Cohort Study
Da Sol Kim, Sunmin Park
Nutrients.2023; 15(17): 3850. CrossRef
Dietary sodium and potassium intake of Koreans estimated using 2 different sources of their contents in foods, Food & Nutrient Database and the Korean Total Diet Study: a comparative study
Jee Yeon Lee, Sung Ok Kwon, Soo Hyun Lee, Min Jeong Seo, Gae Ho Lee, Cho-il Kim
Korean Journal of Community Nutrition.2023; 28(3): 235. CrossRef
Dietary Iron Intake of Koreans Estimated using 2 Different Sources of Iron Contents are Comparable: Food & Nutrient Database and Iron Contents of Cooked Foods in the Korean Total Diet Study
Jeeyeon Lee, Sung Ok Kwon, Yoonjae Yeoh, Min Jeong Seo, Gae Ho Lee, Cho-il Kim
Korean Journal of Community Nutrition.2022; 27(3): 245. CrossRef
Effect of iodine restriction on short-term changes in thyroid function in patients with subclinical hypothyroidism
Obin Kwon, Dong Yeob Shin, Eun Jig Lee
Journal of Nutrition and Health.2022; 55(2): 250. CrossRef

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[English]
Current Barriers of Obesity Management of Children Using Community Child Care Centers and Potential Possibility of Utilizing Mobile Phones: A Qualitative Study for Children and Caregivers: Bo Young Lee, Mi-Young Park, Kirang Kim, Jea Eun Shim, Ji-Yun Hwan; Korean J Community Nutr 2020;25(3):189-203. Published online June 30, 2020; DOI: https://doi.org/10.5720/kjcn.2020.25.3.189

Abstract PDF

Objectives
This study was performed to identify the current barriers of obesity management for children using Community Child Care Centers and their caregivers (parents and teachers working in the Centers). Further, this study explored the possibility of utilizing a mobile phone application for tailored obesity prevention and management programs to overcome the current difficulties associated with children's obesity management.
Methods
The qualitative data were collected through in-depth interviews with 20 obese and overweight children or children who wanted to participate in this study using Community Child Care Centers, 12 teachers working at the Centers, and a focus group interview with five parents of children using the Centers. Data were analyzed with a thematic approach categorizing themes and sub-themes based on the transcripts.
Results
The current barriers of obesity management of obese and overweight children using Community Child Care Centers were lack of self-directed motivation regarding obesity management (chronic obesity-induced lifestyles and reduced self-confidence due to stigma) and lack of support from households and Community Child Care Centers (latchkey child, inconsistency in dietary guidance between the Center and household, repetitive pressure to eat, and absence of regular nutrition education). Mobile phone applications may have potential to overcome the current barriers by providing handy and interesting obesity management based on visual media (real-time tracking of lifestyles using behavior records and social support using gamification), environmental support (supplementation of parental care and network-based education between the Community Child Care Center and household), and individualized intervention (encouragement of tailored and gradual changes in eating habits and tailored goal setting). It is predicted that the real-time mobile phone program will provide information for improving nutritional knowledge and behavioral skills as well as lead to sustainable children’s coping strategies regarding obesity management. In addition, it is expected that environmental factors may be improved by network-based education between the Community Child Care Centers and households using the characteristics of mobile phones, which are free from space and time constraints.
Conclusions
The tailored education program for children using Community Child Care Centers based on mobile phones may prevent and reduce childhood obesity by overcoming the current barriers of obesity management for children, providing environmental and individualized support to promote healthy lifestyles and quality of life in the future.

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An Interactive Live and Online Cooking Program for Children in Vulnerable Families—An Exploratory Study
Jiyoung Park, Sein Hwang, Seolhyang Baek, Gill A. Ten Hoor
Healthcare.2022; 10(12): 2389. CrossRef

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[English]
Qualitative Study on the Perception of Community Food-accessibility Environment among Urban Older Adults: Narae Yang, Kirang Kim; Korean J Community Nutr 2020;25(2):137-149. Published online April 30, 2020; DOI: https://doi.org/10.5720/kjcn.2020.25.2.137

Abstract PDF

Objectives
This study explored the community food environmental factors affecting food purchasing using a qualitative research methodology for the elderly as well as the various food environments under their socioeconomic diversity.
Methods
For the qualitative data collection, this study interviewed 20 elderly people aged 65 years or more, who participated in a public health program or lunch services operated by the senior welfare center in Seoul. Five dimensions, such as availability, physical accessibility, affordability, acceptability, and accommodation suggested in previous studies, were used to identify the community food environmental factors.
Results
The elderly participants showed overall similarities to the concepts derived from existing studies on the five dimensions of food accessibility environment. In addition, other important food accessibility environmental factors that were not present in previous studies, such as acceptability for a product of domestic origin, delivery service to home, and small-packaged food sales, were derived. On the other hand, the concept of some subjects differed depending on the household income and specifically for the physical accessibility concept. This showed that the close distance factor from a grocery store at home might not apply to older adults in low-income households in Korea.
Conclusions
This study found that five dimensions of the food environment suggested by previous studies could also be applied to vulnerable older adults in Korea. On the other hand, the socioeconomic characteristics of individuals and households would affect the perspectives of their local food environments differently. The findings of this study could help in the development of tools for evaluating the community food environment.

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Spatial Disparity of Neighborhood Food Environment by Socioeconomic Status: Application of Urban Network Analysis
Taekyung Seong, Sugie Lee
Land.2024; 13(6): 865. CrossRef
Development and Validation of a Perceived Community Food Accessibility Measurement Questionnaire for Korean Older Adults
Jisoo Hong, Narae Yang, Kirang Kim
Nutrients.2023; 15(19): 4301. CrossRef
A relationship between food environment and food insecurity in households with immigrant women residing in the Seoul metropolitan area
Sung-Min Yook, Ji-Yun Hwang
Journal of Nutrition and Health.2023; 56(3): 264. CrossRef
Regional Difference in the Effect of Food Accessibility and Affordability on Vegetable and Fruit Acquisition and Healthy Eating Behaviors for Older Adults
Dong Eun Lee, Kirang Kim
International Journal of Environmental Research and Public Health.2022; 19(22): 14973. CrossRef
Analysis of Accessibility Changes to Neighborhood Food Environment and Food Desert Phenomenon in Seoul, Korea : Focused on the High-density Areas of Low-income Older Adults
Taekyung Seong, Sugie Lee
Journal of Korea Planning Association.2021; 56(1): 137. CrossRef
Effects of Perceived Food Store Environment on Malnutrition and Frailty among the Food-Insecure Elderly in a Metropolitan City
Yu-Mi Kim, Narae Yang, Kirang Kim
Nutrients.2021; 13(7): 2392. CrossRef
Analyzing Socio-Economic and Geographical Factors that Affect the Health of the Elderly
Zacharias Dermatis, Athina Lazakidou, Athanasios Anastasiou, Panagiotis Liargovas
Journal of the Knowledge Economy.2021; 12(4): 1925. CrossRef
Analysis of Awareness, Knowledge, and Behavior about Food Hygiene·Safety Among the elderly
Mi Sook Lee, Sim-Yeol Lee
Korean Journal of Community Nutrition.2021; 26(3): 200. CrossRef
Nutritional Status according to the Frailty Status of the Elderly at Home in Seo-gu, Gwangju, Korea
Ye Eun Kim, Young-Ran Heo
Korean Journal of Community Nutrition.2021; 26(5): 382. CrossRef

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Original Articles

[English]
Comparison of 24-hour Recalls with a Food Frequency Questionnaire in Assessing Coffee Consumption: The Health Examinees (HEXA) Study: An Na Kim, Jiyoung Youn, Hyun Jeong Cho, Taiyue Jin, Sangah Shin, Jung Eun Lee; Korean J Community Nutr 2020;25(1):48-60. Published online February 29, 2020; DOI: https://doi.org/10.5720/kjcn.2020.25.1.48

Abstract PDF PubReader ePub

OBJECTIVES
Most cohort studies used food frequency questionnaires (FFQ) to evaluate coffee consumption as it assesses habitual dietary patterns, whereas some studies have used the 24-hour recalls (24HR) as it elicits in-depth description of foods and the amount eaten. The aim of this study was to compare FFQs and 24HR to assess the consumption of various types of coffee.
METHODS
We included 25,904 participants aged 40 years or older from the Health Examinees (HEXA) Study of the Korean Genome and Epidemiologic Study (KoGES). Each participant completed one FFQ and one-day (n=11,280) or two-day 24HR (n=14,624). We classified coffee types into: black coffee, coffee with sugar and cream, and coffee with sugar alone or cream alone. We compared the proportions of nondrinkers, black coffee, and coffee with sugar and cream through FFQ and 24HR.
RESULTS
Among those who completed one FFQ and one-day 24HR, 39.4% of â€œnondrinkersâ€ on one-day 24HR reported that they did not drink coffee on their FFQs. Whereas among those who complete two-day 24HR, 71.2% of â€œnondrinkersâ€ on two-day 24HR said that they did not drink coffee on their FFQs. Among those who completed one FFQ and oneday 24HR, 58.3% marked â€œblack coffeeâ€ on one-day 24HR said that they drank black coffee on their FFQs. Among those who complete two-day 24HR, 58.8% marked â€œblack coffeeâ€ on two-day 24HR said that they drank black coffee on their FFQs. The kappa coefficients and percent agreements were 0.4 and 59.6%, respectively, for the comparison of coffee intake between FFQ and one-day 24HR, and 0.6 and 72.8%, respectively, for the comparison of coffee intake between FFQ and two-day 24HR.
CONCLUSIONS
We found discrepancies between FFQs and 24HR in the types of coffee consumed. Such limitations should be considered when using the 24HR data to examine the effect of coffee consumption on disease development.

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Association Between Instant Coffee Consumption and the Development of Chronic Obstructive Pulmonary Disease: Results From a Community-Based Prospective Cohort
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Genetic variation rs1121980 in the fat mass and obesity-associated gene (FTO) is associated with dietary intake in Koreans
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Journal of the Academy of Nutrition and Dietetics.2021; 121(11): 2221. CrossRef

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[English]
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 J Community Nutr 2019;24(2):117-126. Published online April 30, 2019; DOI: https://doi.org/10.5720/kjcn.2019.24.2.117

Abstract PDF PubReader

OBJECTIVES
This study was conducted to investigate the current difficulties surrounding children's obesity management and evaluate the application of a mobile phone as a tool to overcome such difficulties of obesity management from the perspective of main caregivers of elementary school students.
METHODS
The qualitative data were collected through 3 focus group interviews including 6 full-time housewives, 7 mothers with overweight children, and 4 working mothers. Data were analyzed using a thematic approach.
RESULTS
The limitations of current children's obesity management included difficulty in diet management and exercise as well as challenges of setting goals and lack of support at the household and school levels. Mobile technology may be useful to overcome the current problems by providing real-time knowledge on diet management and physical activity, online compensation scheme according to goal setting, and interactive environmental supports at both household and school levels for promoting overall health.
CONCLUSIONS
The mobile-based multiple support program may assist in overcoming the current limitations of child obesity management by providing tailored information and by creating a more supportive environment.

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Current Barriers of Obesity Management of Children Using Community Child Care Centers and Potential Possibility of Utilizing Mobile Phones: A Qualitative Study for Children and Caregivers
Bo Young Lee, Mi-Young Park, Kirang Kim, Jea Eun Shim, Ji-Yun Hwang
Korean Journal of Community Nutrition.2020; 25(3): 189. CrossRef
Consumers’ Impulse Buying Behavior on Instagram: Examining the Influence of Flow Experiences and Hedonic Browsing on Impulse Buying
Forough Shahpasandi, Azim Zarei, Mohsen Shafiei Nikabadi
Journal of Internet Commerce.2020; 19(4): 437. CrossRef

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[English]
Consumption of Han-sik and its Association with Socioeconomic Status among Filipino Immigrant Women: the Filipino Women's Diet and Health Study (FiLWHEL): Nayeon Kim, Minji Kang, Grace Abris, Sherlyn Mae P Provido, Hyojee Joung, Sangmo Hong, Sung Hoon Yu, Chang Beom Lee, Jung Eun Lee; Korean J Community Nutr 2018;23(6):475-487. Published online December 31, 2018; DOI: https://doi.org/10.5720/kjcn.2018.23.6.475

Abstract PDF PubReader: OBJECTIVES
This study examined the consumption of Han-sik and its association with the years of residence in Korea and the socioeconomic status among Filipino immigrant women of the Filipino Women's Diet and Health Study (FiLWHEL).
METHODS
A total of 474 Filipino women married to Korean men were included in the analysis. Their dietary intake was assessed using a single-day 24-hour recall. The participants provided information on the demographics, socioeconomic, and health-related factors through face-to-face interviews. The generalized linear model and logistic regression model were used to examine the association between the socioeconomic status and consumption of Han-sik.
RESULTS
The mean age of the participants was 34.3 years old, and the average duration of residence in Korea was 8.2 years. Among 474 Filipino women, a total of 467 consumed Han-sik, with an average of 6.8 food items per day. The Han-sik foods that the participants consumed most frequently were rice, cabbage kimchi, mixed-grain rice, and fried eggs. The average ratio of Han-sik was 58.57%. The ratio of Han-sik showed no significant associations with the years of residence, years of living together with their husband, education levels, total annual family income, or linguistic competence of Korean. However, the ratio of Han-sik use was associated with cohabitation with parents-in-law; the odds ratio (95% confidence interval) was 2.41 (1.18â€“4.92, p-trend = 0.002) comparing the fourth quartile with the first quartile of the Han-sik ratio.
CONCLUSIONS
Filipino immigrant women in the FiLWHEL study consumed a larger number of Han-sik than Philippine foods. In addition, cohabitation with their parents-in-law was associated with the consumption of Han-sik. Further epidemiologic studies will be needed to determine how the diet affects the health and wellbeing of immigrant women in Korea.

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[English]
Leveraging Multimodal Supports using Mobile Phones for Obesity Management in Elementary-School Children: Program Providers' Perspective from a Qualitative Study: Mi Young Park, Jae Eun Shim, Kirang Kim, Ji Yun Hwang; Korean J Community Nutr 2017;22(3):238-247. Published online June 30, 2017; DOI: https://doi.org/10.5720/kjcn.2017.22.3.238

Abstract PDF PubReader

OBJECTIVES
This study was conducted to investigate providers' perspectives on current challenges in implementing a program for prevention and management of childhood obesity and adoption of mobile phone as a potential solution of leveraging multimodal delivery and support in a school setting.
METHODS
The qualitative data were collected through face-to-face in-depth interviews with 23 elementary-school teachers, 6 pediatricians, and 6 dieticians from community health centers and analyzed using a qualitative research methodology.
RESULTS
Current challenges and potential solutions of obesity-prevention and -management program for obesity program for elementary school children were deduced as two themes each. Lack of tailored intervention due to limited recipient motivation, lack of individualized behavioral intervention, and different environmental conditions can be solvable by mobile technology-based personalized intervention which brings about interactive recipient participation, customized behavioral intervention, and ubiquitous accessibility. Lack of sustainable management due to stigmatization, limited interactions between program providers and inconsistent administrative support can be handled by multimodal support based on school setting using mobile platform providing education of health promoting behaviors toward larger scale and interactive networking between program participants, and minimizing administrative burden.
CONCLUSIONS
Adoption of mobile-based health management program may overcome current limitations of child obesity program such as lack of tailored intervention and sustainable management via personalized intervention and multimodal supports although some concerns such as increased screen time need to be carefully considered in a further study.

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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

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Optimal Waist Circumference for the Prevention of Cardiovascular Disease: Inkyung Baik, Chol Shin; Korean J Community Nutr 2010;15(2):275-283. Published online April 30, 2010

Abstract PDF: There are few studies reporting optimal waist circumference that can be utilized to prevent the incidence of cardiovascular disease (CVD). We evaluated the association of waist circumference and waist and hip circumference ratio (WHR) with incident cases of CVD developed over 6 years in a population-based prospective study including Korean adults. Analyses for receiver-operating characteristic (ROC) curve were performed with data for 1,733 men and 1,579 women who were aged 40 to 69 years and were free of a physician-diagnosis of CVD at baseline. Information on the diagnosis of CVD was periodically reported using interviewer-administered questionnaires and anthropometric measures were obtained by biennial health examinations. We newly identified 77 cases of CVD during a follow-up period between 2003 and 2008. On the basis of measures of diagnostic accuracy including minimum distance to ROC curve and Youden index, waist circumference of 85 cm for men, in particular for male nonsmokers, and of 80 cm for women and WHR of 0.88 to 0.90 for men and of 0.83 for women were found to be optimal cutoff points to identify individuals at CVD risks. The study also found that the use of the suggested optimal values for waist circumference show higher sensitivity and lower specificity compared with 90 cm for men and 85 cm for women, which are waist cutoff points given by the Korean Society for the Study of Obesity to define abdominal obesity for Korean adults. Although lower cutoff points of waist circumference (83 cm) and WHR (0.87) were observed to be optimal for male smokers compared with male nonsmokers, whether suggesting waist cutoff points specific to smokers is needed warrants further studies. After taking into account other cardiovascular risk factors including smoking, men with waist circumference of 85 cm or greater and women with 80 cm or greater were at an increased risk of CVD. Thus, these cutoff points of waist circumference may be able to capture more individuals at CVD risks contributing to the prevention of future development of CVD.

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[English]
Developing Dish-based Food Frequency Questionnaire for the Epidemiology Study of Hypertension Among Korean: Mi Kyung Kim, Young Mi Yun, Youngok Kim; Korean J Community Nutr 2008;13(5):701-712. Published online October 31, 2008

Abstract PDF: The purpose of the present study was aimed to identify dish items applicable in developing dish?based food frequency questionnaire (DFFQ) for a hypertension study of Koreans. The 24-hour recall data of 4,401 subjects aged 20~65 years from the 2001 Korean National Health and Nutrition Examination Survey were used for the analysis. Logistic regression model was used to identify the nutrient related with hypertension. Energy, fiber, sodium, calcium, carotene, vitamin B1 and vitamin C were associated with hypertension. Selection the top 30 dish items for these seven nutrients was performed based on their degree of contribution in supplying nutrients in terms of the cumulative percent contribution (cPC), as well as on their degree of explanation for between?person variation, in terms of the cumulative regression coefficient (cMRC). Rice supplied 43% of total energy consumption. Korean cabbage and radish kimchi were two major sources of sodium and it also covered the 27% of between person variation of sodium intake. Soybean paste soup and single item of orange?colored fruits supplied 43% of total vitamin C intake for Koreans and it covered the almost 79% of between person variation among the Korean population. Korean cabbage kimchi was the major source of fiber, calcium, sodium, carotene, and vitamin C for Koreans. In summary, the top 30 selected dish items supplying the 78% to 89% of the 7 nutrients. Those items also covered the 79% to 94% of between person variation of the 7 nutrients consumption. Therefore, the selected 30 dish items in each categories of nutrient could be applicable in developing dish based food frequency questionnaire for hypertension study.

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The Estimation of the Daily Energy Expenditure of Korean Adolescents: Youngnam Kim, Hyeon Ju Na; Korean J Community Nutr 2003;8(3):270-279. Published online June 30, 2003

Abstract PDF: Middle and high school students in Korea spend a lot of time at school. In other words, many Korean teenagers spend most of their time studying, and have little time for other activities, such as physical workouts. Fewer physical activities, and consumption of many snacks, etc. may lead to overweight or obesity in some teenagers. This study was conducted to find out the activity levels of teenagers' in order to calculate their daily energy expenditures. A total of 1,192 students (461 middle school students and 731 high school students) who lives in either a city or a country area were recruited for this study. One-day Activity Diaries were collected using questionnaires and analyzed by means of SPSS/win. The participating students spent about 7 hours 24 minutes resting including sleeping; 6 hours 28 minutes studying, 4 hours 4 minutes in leisure activities, 1 hour 32 minutes in personal hygiene activities such as washing, dressing and undressing, etc., 50 minutes on transportation : and 23 minutes on household chores such as cleaning, doing the laundry, etc. The average activity factor was 1.49. That of middle school female students was the lowest at 1.47, followed by middle school male students at 1.48, high school female students at 1.49, and high school male students at 1.51. The daily energy expenditure of middle and high school male students was 2,289 kcal and 2,600 kcal, respectively. That of female students was 1,959 kcal and 2,067 kcal, respectively.

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[English]
Follow-up Study of Health-Related Habits and Health Status of Middle-Aged Men and Women in Chonju: Mee Sook Lee, Mee Kyung Woo, In Sook Kim; Korean J Community Nutr 2000;5(2):185-192. Published online July 31, 2000

Abstract PDF: As the percentage of the elderly in the population increases, research to identify the nutritional and health status of the elderly, to understand the factors influencing on them, and to delay aging have been done actively. It is necessary for these studies to be longitudinal. This study was carried out to assess the change of health-related habits such as dietary behaviors and smoking, alcohol drinking and exercising habit, and health status between previous study(1991/1994) and post study(1998) for middle-aged men and women living in Chonju. For the present study, the data of 63 pairs(23 men and 40 women) were analyzed. They were 11 men and 12 women followed up from 82 men and 100 women surveyed in 1994. Mean ages in the 1991/4 and 1998 studies were 53.6y(range 42-63y) and 59.0y(range 46-72y) respectively. The survey was conducted with interview using a questionnaire including dietary behaviors and health-related habits, and anthropometric measurement and blood test for analyzing biochemical indices in 1991/4 and 1998. To understand these changes over time, chi2-statistics, t-test and paired t-test were analyzed with an SAS package program. As people age, there were significantly decreases in the proportions to eat lightly salted foods and drink alcohol. Significant longitudinal increases in triceps skin fold thickness, gamma-GPT and HDL-cholesterol and significant decrease in hemoglobin value were noted over time in both men and women. In addition a significant decrease in blood glucose level was noted over time in women. Weight, blood glucose and total cholesterol increased significantly with age in those had had breakfast regularly or those had not used more slat at the table in the past. From this study, were found out the subjects of this study had relatively desirable health-related habits. But as improper health-related habits are likely to result in inappropriate health status(eg, increase in WHR, triglyceride, total cholesterol and LDL-cholesterol), it is recommended that nutrition education in necessary as soon as possible to meet the health elderly.

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[English]
A Long Term Observation of Total Cholesterol, Blood Pressure, BMI and Blood Glucose Concerned with Dietary Intake: In Sook Kim, Eun A Seo; Korean J Community Nutr 2000;5(2):172-184. Published online July 31, 2000

Abstract PDF: To establish a basic cohort which can survey the nutrient and food intake related to the health status of the middle and old-aged vertically, a longitudinal survey of 110 adults over forty years old was conducted three times in Chon-ju city over 5 years (1994-1999), and the influences of health status by changes in their nutrient and food intake were examined in this study. The results were as follows ; The number of subjects was 110(43 man, 67 women), 10.0% in their forties, 28.2% in their fifties, 45.4% in their sixties 6.4% over seventy, and their average age was 61.4. There were decrease of height about 1 cm, increase of body fat % and few changes of BMI during the testing period. As the subjects were aging, the percentage of anemia increased, but averages of blood pressure and blood glucose(men : 91.8 mg/dl, women : 90.3 mg/dl) were constant. Total cholesterol increased from 196.7 mg/dl to 212.6 mg/dl(P 0.05) over five years, and the numerical values for women were higher than that of men. In many cases, lack of nutrient intake was shown, as compared with the Recommended Dietary allowance(RDA) especially calcium and vitamin A(71.7%, 64.9% of RDA). Grains intake showed a tendency to decrease(P 0.01). On the contrary, fruit intake showed a tendency to increase(P 0.001). On whole meal, plant foods were 85.1% and animal foods were 14.9%. As dietary factors influencing health status were investigated, blood glucose was influenced by vitamin B2, potatoes and triglyceride, DBP and SBP were affected by vitamin B1, vitamin C, legumes, fishes, triglyceride and age. Total cholesterol was under the influence of triglyceride, milk, seeds and fat. BMI was influenced by iron, SBP, animal food, and age.

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[English]
A Longitudinal Study on the Change of Nutrients and Food Consumption with Advance in Age among Middle-aged and the Elderly: In Sook Kim, Eun A Seo, Hyeon Hee Yu; Korean J Community Nutr 1999;4(3):394-402. Published online September 30, 1999

Abstract PDF: The purpose of this study is to investigate diet quality and changes in nutrient and food intake with increase in age. Subjects were 69 patients(28 males, 41 females) living in Jeon-ju city, over middle-aged, and they were the same patients studied 4-7 years ago in a previous study. Dietary survey with one day 24-hour recall method was used. Energy, calcium, vitamin A and vitamin B2 intakes were lower than the RDA and vitamin C was in excessive status in pre-test and post-test. In food groups examrned, the consumption of potatoes, beans, vegetables, seaweeds, beverages, seasonings, oils, fish & shells and milks was increased amount than 4-7 years before but the consumption of cereals(p<0.01), sugars, seeds, fruits, processed food, meats and eggs was decreased. Diet quality was assessed by %RDA, nutrient adequacy ratio(NAR), mean adequacy ratio(MAR), dietary diversity score(DDS), meal balance and food group pattern. In %RDA, those proportion of appropriate intake in post-test in were higher than those in pre-test. For most nutrient except vitamin A, the levels of NAR in post-test were higher than in pretest. The MAR, an index of overall dietary quality, was 0.77 for pre-test and 0.83 for post-test(p<0.05). When we counted the major food groups consumed(KDDS), 62.3% of subjects had a KDDS of 3 in pre-test and 42.0% of subjects had a KDDS of 4 in post-test. Based on these results, in terms of variety and balance, total diet quality was improved with advancing of age

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[English]
The Longitudinal Study of Diet and Sexual Maturity as a Determinant of Obesity for Adolescents: Young Ok Kim, yoon Sun Choi; Korean J Community Nutr 1998;3(5):679-684. Published online November 30, 1998

Abstract PDF: This study was conducted to investigate the determinants of obesity during adolescnece. A total of 726 adolescents living in rural areas in Korea had been observed for four years from 1992 to 1996 regarding their diet, sexual maturity, blood profile and physical growth. Stepwise multiple regression analysis was used to identify priorities fo the importance between the factors influencing obesity. The average nutrient intake over the three year period was higher than that of the Korean Recommended Dietary Allowances. The prevalence of obesity for the subjects based on BMI was 9.5%. Results of the stepwise multiple regression analysis showed that blood components and sexual maturity were more significant factors for determining the obesity than the dietary factors. The result may suggest that to understand obesity in children it is necessary to develop on analytical model for the children rather than using the existing analytical model developed mostly for adult patients of obesity. The model should include a wide range of variables such as diet, sexual maturity and changes in blood.

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