Korean Journal of Community Nutrition

Original Articles

[English]
Comparison of Physical Activity Level, Physical Activity Pattern and Energy Expenditure in Male and Female Elementary School Soccer Players using Accelerometer and Physical Activity Diary: Hae Sun An, Su Ji Choi, Mo Ran Lee, Jung Sook Lee, Eun Kyung Kim; Korean J Community Nutr 2017;22(6):529-542. Published online December 31, 2017; DOI: https://doi.org/10.5720/kjcn.2017.22.6.529

OBJECTIVES
The purpose of this study was to compare the physical activity level (PAL), the physical activity pattern and the energy expenditure in male and female elementary school soccer players using the accelerometer and the physical activity diary.
METHODS
Twenty-five (male 11, female 14) elementary school soccer players (9â€“12 years) participated in this study. During their daily activities, they wore an accelerometer for seven days (five weekdays and two weekend days) and completed the physical activity diary for three days (two weekdays and one weekend day). PAL was calculated by using the physical activity diary and three equations (Pate Preschool, Freedson Children, and Freedson) were used to calculate the intensity of physical activity and energy expenditure from the counts of accelerometer.
RESULTS
The average of physical activity by day of the week, CPM (Counts Per Minute) and METs (Metabolic Equivalents) were significantly higher in males (723.3 Â± 149.2 CPM, 2.07 Â± 0.18 METs) compared to females (505.6 Â± 119.9 CPM, 1.79 Â± 0.20 METs), but there was no significant difference in PAEE (Physical Activity Energy Expenditure) between the two groups (males: 15.5 Â± 9.1 kcal/day, females: 11.5 Â± 6.0 kcal/day). During weekdays, physical activity intensity was significantly higher in males compared to females at lunch time and training time than at other times. In both genders, the PAL was higher during weekdays (males 1.98, females 1.89) compared to weekend (males 1.62, females 1.61) (p<0.05).
CONCLUSIONS
Our study observations suggest the necessity to develop an accelerometer equation for accurately evaluating the physical activity of elementary school athletes.

Citations

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Validation of a physical activity classification table in Korean adults and elderly using a doubly labeled water method
Hye-Ji Han, Ha-Yeon Jun, Jonghoon Park, Kazuko Ishikawa-Takata, Eun-Kyung Kim
Journal of Nutrition and Health.2023; 56(4): 391. CrossRef
Establishment and future tasks of estimated energy requirement in 2020 dietary reference intakes for Koreans
Eun-Kyung Kim, Oh Yoen Kim, Jonghoon Park, EunMi Kim, Juhyeon Kim
Journal of Nutrition and Health.2021; 54(6): 573. CrossRef

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[English]
Comparison of Nutritional Status and Eating Behavior of Korean and Chinese Children using the Nutrition Quotient (NQ): Hua Ling, Hokyung Ryu; Korean J Community Nutr 2017;22(1):22-39. Published online February 28, 2017; DOI: https://doi.org/10.5720/kjcn.2017.22.1.22

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OBJECTIVES
This study was conducted to investigate the nutritional status and dietary behavior of Korean and Chinese elementary school children using Nutritional Quotient (NQ).
METHODS
The survey was conducted by distributing questionnaires to the parents of the child, after selecting four elementary schools located in Pusan city of Korea and three elementary schools located in Luoyang city, Henan Province of China, from Grade 1 to Grade 6 in each school.
RESULTS
The NQ scores of Korean children and Chinese children were 64.99 and 66.57, respectively, which did not show a statistically significant difference. Korean children significantly showed higher diversity score (p<0.001) than Chinese, but Chinese children significantly showed higher moderation (p < 0.001), regularity (p < 0.001) and practice score (p < 0.01) than Korean. NQ grades showed a statistically significant difference. According to food security of the household, NQ scores of the Chinese children of secure household were significantly higher than those of food insecurity household (p < 0.01). In particular, it showed a significant difference in the practice (p < 0.001), moderation (p < 0.05) and regularity score (p < 0.05). Korean children's NQ score showed a significant correlation with the score of following the Dietary Guidelines of parents, but Chinese did not show such a correlation.
CONCLUSIONS
There were differences in children's dietary behaviors and parents' impact to children's dietary attitude between Korean and Chinese. NQ developed for Korean could be successfully applied to Chinese.

Citations

Citations to this article as recorded by

Diet-Related Disparities and Childcare Food Environments for Vulnerable Children in South Korea: A Mixed-Methods Study
Jiyoung Park, Seolhyang Baek, Gahui Hwang, Chongwon Park, Sein Hwang
Nutrients.2023; 15(8): 1940. CrossRef

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[English]
Factors Related to Calceneal Broadband Ultrasound Attenuation, Anthropometric Indexes and Nutrient Intakes among Elementary School Children in Chungnam: Ye Jung Kim, Yoon Jeong Choi, Hee Seon Kim; Korean J Community Nutr 2013;18(4):312-323. Published online August 31, 2013; DOI: https://doi.org/10.5720/kjcn.2013.18.4.312

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Variables affecting bone heath of growing children were analyzed among forty nine 10-12 year old elementary students in three rural regions of north west Chungnam area. Information on age of the parents, duration of breast feeding and birth weight were collected from the guardians of the participants and nutrient intake and diet quality were assessed by average of three-day food records of participants with the help of dietitians. Bone health status was measured by calceneal broadband ultrasound attenuation (BUA) using quantitative ultrasound (QUS). Results showed that anthropometic indexes and nutrient intake levels were not different between boys and girls. However, iron intake was significantly lower in girls than in boys. Girls after menarche showed lower intake levels for thiamin, riboflavin, pyridoxine and niacin than girls before menarche. z-scores of BMI were lower than -1 and higher than +1 showed shorter breast feeding period than others but the difference was statistically non-significant. Overall, the subjects did not consume enough s of calcium, vitamin C and folic acid. Zinc intake and BMI were the most significant factors affecting BUA by the results of backward elimination in multiple regression models. Phosphorous and beta-carotene intakes showed significant negative relation with BUA. This study showed that children living in the rural area of Chungnam need extra care to keep their health and nutrient intakes especially for the nutrients known to affect growth. Tailored nutrition education needs to be more focused on the improvement of bone health status of children.

Citations

Citations to this article as recorded by

Children's Food Intake and Nutrition Levels, and Obesity by Maternal Employment: Based on the Korea National Health and Nutrition Examination Survey 2013–2015
Geunyeong Kang, Yoonna Lee, Mihyang UM, Seunghee Kye
Korean Journal of Community Nutrition.2019; 24(4): 331. 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
Effects of Dietary Education on Elementary Children in After-school Program in Seoul
Kyung-Hee Kim
Journal of the Korean Society of Food Culture.2014; 29(2): 222. CrossRef

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[English]
Effects of Fusion-Food Cooking Activity on Elementary School Students' Knowledge, Preferences and Perceptions of Korean Traditional Foods: Jeong Hae Bae, Kyoung Ae Lee; Korean J Community Nutr 2012;17(4):376-389. Published online August 31, 2012; DOI: https://doi.org/10.5720/kjcn.2012.17.4.376

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The purpose of this study was to develop a fusion-food cooking program and apply that to sixth grade elementary school students, and to investigate its' effects on their knowledge, preferences, and perceptions of Korean traditional foods. The program focused on ten components. Students learned the general features of Korean traditional foods and Western foods in the 1st lesson. They learnt about kinds, nutrition value, and histories of kimchi, Tteok (rice cake), and Jeon (pan fried food), and cooked two fusion-foods of kimchi, Tteok, and Jeon each. As a result of learning about those food items, the students advanced their knowledge (p < 0.001) of kimchi, Tteok, and Jeon. Their preferences for Tteok (p < 0.05) and Jeon (p < 0.01) were increased, but those for kimchi remained unchanged. The interest (p < 0.05) and preferences (p < 0.01) for the general Korean traditional foods were increased. In conclusion, our results suggested that the fusion-food cooking program had the ability to improve elementary school students' perceptions of Korean traditional foods by increasing their knowledge, preferences, and interest in them. Furthermore it was considered that the program could help students understand the value of Korean traditional foods and in turn may encourage them to consume such food items more frequently. Since the fusion-food cooking activity program can be a good learning program as shown by the results of this study, more fusion-foods cooking activity programs, which are not discussed in this study, should be evaluated and developed in the future.

Citations

Citations to this article as recorded by

Traditional Food Consumption and Cultural Food Knowledge in Korean and Japanese Elementary School Students
Jiyu Choi, Sooyoun Kwon, Sang-Jin Chung
The Korean Journal of Food And Nutrition.2016; 29(2): 218. CrossRef

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[English]
Effects of Short-Term Food Additive Nutrition Education Including Hands-on Activities on Food Label Use and Processed-Food Consumption Behaviors: among 5th Grade Elementary School Students: Ji Hye Kim, Seungmin Lee; Korean J Community Nutr 2011;16(5):539-547. Published online October 31, 2011; DOI: https://doi.org/10.5720/kjcn.2011.16.5.539

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This study evaluated effects of food additive nutrition education on food additives-related knowledge, subjective awareness, and perception and dietary behaviors of food label use and processed-food intake. The study subjects were 5th grade students attending an elementary school in Seoul. A total of 101 subjects were assigned to either education (N = 50) or control (N = 51) group, and 3 food additive nutrition education classes were implemented to the education group. Self-administered questionnaires were collected from all the participants twice, a week before and after the nutrition education to compare the changes between two groups. The food additives-related knowledge and subjective awareness significantly improved in the education group compared to the control group. The changes in perceived harmfulness and perceived necessity for taste were also detected significantly different between the two groups, with more positive changes in the education group. Dietary behaviors of checking food labels and trying to purchase processed-foods with less food additives improved in the education group at a significant level in comparison with the control group. Additionally changes in intake frequency of several processed-food items were significantly different between the groups, again in a more positive direction in the education group. The study findings showed short-term food-additive nutrition education including hands-on activities could positively modify elementary school children's food additives-related knowledge, perception, and certain dietary behaviors, stressing better settlement of in-class nutrition education within an elementary school's education curriculum.

Citations

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Developing educational programs to increase awareness of food additives among elementary school students
Soo Rin Ahn, Jae Wook Shin, Jung-Sug Lee, Hyo-Jeong Hwang
Journal of Nutrition and Health.2024; 57(4): 451. CrossRef
Choice Experiment Assessment of Consumer Preferences for Yogurt Products Attributes: Evidence from Taiwan
Min-Yen Chang, Chien-Cheng Huang, Ying-Chi Du, Han-Shen Chen
Nutrients.2022; 14(17): 3523. CrossRef
A Study on Utilization of Processed Foods and Recognition of Food Labels among University Students
Jeong-Sill Lee, Hyun-Kun Oh, Kyung-Soon Choi
The Korean Journal of Food And Nutrition.2015; 28(1): 24. CrossRef
Association of Interpersonal Relationships with Preference and Intake Frequency of Snack with a Focus on Obesity Index and Snack Preparations in Upper Grade Elementary School Students
Eun Sil Her
The Korean Journal of Food And Nutrition.2015; 28(2): 178. CrossRef
Trends of Perception and Information Needs on Food Additives of Children and Parents by Analyzing the Safety Assessment Reports of Food Additives in 2008~2013
Suna Kim, Ji-Sun Kim, Joung-Mi Ko, Jeong-Weon Kim
Korean journal of food and cookery science.2014; 30(3): 249. CrossRef
Effect Evaluation of Nutrition Education for Improving Preferences to Korean Traditional Foods in Upper Grades Schoolchildren
Youngmi Jeong, Taejung Woo, Kyung-Hea Lee
The Korean Journal of Food And Nutrition.2014; 27(6): 1119. CrossRef
Need-based development of tailored nutritional education materials about food additives in processed foods for elementary-school students
Ki Nam Kim, A Reum Lee, Hae Ryun Lee, Kirang Kim, Ji-Yun Hwang
Journal of Nutrition and Health.2013; 46(4): 357. CrossRef
Interrelations Among Snack Preference, Purchasing Behaviors and Intake in Upper Grade Elementary School Students - Compared by the Gender and TV Watching Time -
Eun Sil Her
Korean Journal of Community Nutrition.2013; 18(5): 429. CrossRef

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[English]
Evaluation of a Nutrition Education Program for 3rd Grade Elementary School Students: Duk Ha Kwon, Sung Nim Han, Hye Kyeong Kim; Korean J Community Nutr 2011;16(2):183-194. Published online April 30, 2011; DOI: https://doi.org/10.5720/kjcn.2011.16.2.183

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This study examined the effects of a nutrition education program on nutrition-related knowledge, eating habits, and dietary behavior. Subjects were 3rd grade elementary school students in Anyang, Gyeonggi-do. A 5-week nutrition education program was implemented to 28 children and another 26 children were included in the study as a control group. A self-administered questionnaire was used to assess the effects of nutrition education program. Mean nutrition related knowledge score was improved after education (p < 0.001). There was a significant improvement in knowledge of nutrient source (p < 0.05), role of protein (p < 0.05), food tower (p < 0.001), getting information from nutrition labeling (p < 0.05), and proper way of snacking (p < 0.001). Eating habits and self-efficacy also tended to improve by nutrition education, especially eating habit of snack and self-efficacy on balanced diet reached significant improvement (p < 0.05). Food consumption frequency was not changed significantly, only consumption of sea weeds which is considered as a reluctant food among children was increased after education (p < 0.05). In addition, the number of leftover food items and total amount of leftover at school lunch reduced significantly after education when compared with the same 10-day menu prior to education (p < 0.01). This result suggests that unbalanced dietary behavior has been changed with the nutrition education program. In conclusion, the nutrition education program was found to be effective in improving nutrition-related knowledge, eating habits, and dietary behavior.

Citations

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Effect of Nutrition Education on Reduced Sugar Intake in Elementary School Students
Young-Mi Seo, Ok-Jin Park, Min-June Lee
Journal of the East Asian Society of Dietary Life.2021; 31(1): 14. CrossRef
Status of Dietary Life Related Knowledge, Self-Efficacy, Food Preference and Dietary Behavior of Preschoolers in Kyunggi Area
A Reum Lee, Ye Lee Yu, Hye Jin Kim, Kyung A Kim, Kyung Won Kim
Korean Journal of Community Nutrition.2016; 21(3): 274. CrossRef
Effectiveness Evaluation of Food Allergy Education Program for Elementary School Children
Harim Kim, Kyunghee Song, Youngmi Lee, Youngshin Han, Bomi Kang, Soun Ju Kweoun
Journal of the East Asian Society of Dietary Life.2015; 25(6): 1058. CrossRef
Effects of Dietary Education on Elementary Children in After-school Program in Seoul
Kyung-Hee Kim
Journal of the Korean Society of Food Culture.2014; 29(2): 222. CrossRef
Perception on Nutrition Labeling of the Processed Food among Elementary School Students and Parents in Daegu Area
Jung Mi Kim, Mi Hee Lee, Nan Hee Lee
The Korean Journal of Food And Nutrition.2014; 27(6): 1107. CrossRef
Relationships between Eating Behavior, Dietary Self-Efficacy, and Nutrition Knowledge of Elementary School Students by Food Service Type in Gangwon Province
Hyang-Rye Won, Gi-Beum Shin
Journal of the Korean Society of Food Science and Nutrition.2012; 41(5): 638. CrossRef
Effects of Short-Term Food Additive Nutrition Education Including Hands-on Activities on Food Label Use and Processed-Food Consumption Behaviors: among 5th Grade Elementary School Students
Ji-Hye Kim, Seungmin Lee
Korean Journal of Community Nutrition.2011; 16(5): 539. CrossRef

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[English]
Food Habits, Eating Behaviors and Food Frequency by Gender and among Seoul and Other Regions in Upper-Grade Elementary School Children: Kyung Hee Kim; Korean J Community Nutr 2010;15(2):180-190. Published online April 30, 2010

Abstract PDF: This study was conducted to investigate the differences in food habits, eating behaviors and food frequency by gender and regions in upper grade elementary school children in Korea. Subjects of this study were 1,211 children, 645 boys and 566 girls, attending 6 elementary schools (4th, 5th and 6th graders). 389 children lived in Seoul and 822 children lived in other regions. Mean height, weight and BMI of subjects were 142.4 cm, 38.7 kg and 18.8 kg/m2 respectively. 70.5% of the subjects had breakfast every day and 12.4% of the subjects skipped breakfast. There were significant differences between boys and girls in causes of skipping breakfast, overeating, meal volume, and duration of meals. Girls showed more desirable eating behavior than boys (p < 0.001). Scores for specific eating behaviors such as unbalanced diet and intake of meats and vegetables were better in girls (p < 0.001), and boys ate meals faster than girls (p > 0.001). There were significant differences between Seoul and other regions in eating behavior. Eating behavior scores of children in other regions were higher than in Seoul (p < 0.01). Children in Seoul had a higher frequency of watching television with meals. Frequency of fruits (p < 0.001), milk products (p < 0.01), and meats (p < 0.05) of children in Seoul were higher than other regions. Otherwise the frequency of simple sugar products of children in other regions was higher than Seoul (p < 0.001). Frequency of green vegetables was higher for girls than boys, and frequency of fast foods was higher for boys than girls. These results showed that in nutrition education programs designed to improve the nutritional health of elementary school children, we need to focus more on differences in the children's food habits and eating behaviors by gender and regions. In consideration of these differences, such educational programs need to have a different emphasis for each gender and regions to serve its specific needs.

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[English]
Nutrition Knowledge and Eating Behaviors of Elementary School Children in Seoul: Na Young Jeong, Kyung Won Kim; Korean J Community Nutr 2009;14(1):55-66. Published online February 28, 2009

Abstract PDF: This study was aimed to examine nutrition knowledge, dietary attitudes, and eating habits of elementary school students and to examine if their characteristics differ by gender. Subjects were 5th and 6th graders of an elementary school (n = 317) in Seoul, and the survey was done during July 2007. Mean height, weight, BMI of subjects was 148.1 cm. 41.7 kg, 19.0, and 14.3% of subjects were categorized as the overweight/obese group. Anthropometric data were not significantly different by gender. Mean score of nutrition knowledge was 14.9 out of 20 showing moderate knowledge levels, and girls scored higher on nutrition knowledge than boys (p < 0.05). Subjects showed knowledge deficit in areas such as nutrients, food groups and specific weight control information. The percentages of correct answers regarding meals for brain function were significantly higher in girls than in boys (p < 0.05). They got nutrition information mainly from mass media and family/relatives. The mean score of dietary attitudes was 41.2 (possible score: 10-50) indicating somewhat positive attitudes, and the score of eating behaviors was 34.8 (possible score: 15-45). Subjects showed problems in eating habits such as having unbalanced diets and snack foods. 82.6% of subjects had unbalanced meals, and these percentages were higher in girls (87.2%) than in boys (78.1%, p < 0.05). Vegetables and fish/shellfish were the most disliked foods. Specific eating behaviors, such as eating slowly, eating grains and having processed foods less frequently, were better in girls than in boys (p < 0.05). Results also showed that majority of subjects need to improve specific behaviors including having diverse foods, eating meals slowly, having meals at regular times, having adequate foods in each food groups, and eating sweets or salty foods less frequently. Only 52.7% of subjects perceived their body images as normal, and 56.4% had experience of weight control. Reasons for weight control were different by gender (p< 0.05). Based on these findings, nutrition education for school children should focus on modifying eating habits or eating behaviors, by suggesting practically applicable methods and providing nutrition information that is interesting and suitable to school-aged children.

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[English]
Elementary School Children's Intake Patterns of Health Functional Foods and Parent's Requirements in Daejeon Area: Jin Seon Park, Joon Ho Lee; Korean J Community Nutr 2008;13(4):463-475. Published online August 31, 2008

Abstract PDF: This study investigated intake patterns of health functional foods (HFF) in elementary school children and requirements of their parents in the Daejeon area using a questionnaire by 432 parents. Participating parents were composed of female, 83.6% and male, 16.4%. Most of the parents were in their 40's (53.0%) and 30's (45.8%). 47.9% of the children were male and 52.1% were female. The school year of the children was distributed evenly, ranging from the first year to the sixth year. The intake rate of HFF for parents appeared to be 65.3% and for children it appeared to be 63.2%. The primary reason of using HFF to their child was 'For health promotion' (54.4%); the largest reason of non-using HFF was 'Do not feel necessity because is healthy' (48.8%). In regards to purchase place, 'Drugstore' was most selected by 26.1%, while the largest amount of purchase motive was 'Decided by oneself for children's health' (37.7%). The average expense per month was, 'Less than 50 thousand portion' (20.3%). The intake period, 'less than 6 months' was won' for 54.9%. For intake items, 'Vitamin supplementation products' was the largest portion' (20.3%) was indicated. The intake period, 'less than 6 months' was the most selected by 51.3%. Most people (66.7%) selected '1 kind' of intake item. As for intake effect, 45.4% claimed 'A little help'. In regard to experiencing side effects, 'Is not' was 92.7%, however, diarrhea, nettle rash, nausea etc. were a little. The biggest problem of HFF was 'Falsehood/exaggerative advertisement' as identified by 53.1%. For improvement of the HFF system was, 'Verify by more strict formality' as selected by 55.8%. In regards to experience of nutrition education on HFF, 'Is not' was most selected by 51.0%. The most desirous form of nutrition education was, 'Simple paper material' (31.3%). The most desirous content of nutrition education was, 'nutritional management of classified by life cycle' (37.2%). Therefore, HFF must be used properly to promote the health and growth development of children by acquiring scientific and reasonable information about the ability and usage of the food.

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[English]
Assessment of Daily Steps, Physical Activity and Activity Coefficient of the Elementary School Children in the Rural Area: Hyun Mi Lee, Eun Kyung Kim; Korean J Community Nutr 2007;12(3):361-371. Published online June 30, 2007

Abstract PDF: The purpose of this study was to assess the daily steps, physical activities and activity coefficient of the elementary school children in the rural area. Body weight, height and daily steps were measured and one-day activity diaries were collected by interviewing children. The average age of the subjects was 9.96+/-1.02 years. Average height, weight, obesity index, body fat and muscle of subjects were 136.2+/-8.9 cm, 35.2+/-8.5 kg, 99.6+/-18.8%, 22.9+/-8.5% and 35.8+/-6.0%, respectively. The average daily steps of the subjects was 17,584 and daily steps (19,314) of 3rd grade students was significantly higher than that (15,712) of 5th grade children. But there was no significant difference in daily steps and activity coefficients between boys and girls. Daily steps (23,347) of exercise group showed the significantly higher than that (16,144) of nonexercise group. Gender and grade of subjects did not have significant influence on activity coefficients, but there was a significant difference in activity coefficient on weekdays between the exercise group (1.82+/-0.30) and non-exercise group (1.50+/-0.21). Analysis of variance revealed stronger associations between daily steps and body fat (%) than between daily steps and BMI. Daily steps showed significant negative correlation with body fat (%) measured using two methods r =-0.321 and r = -0.365, respectively. Activity coefficient was significantly correlated (r = 0.436) with daily steps, thus increasing daily steps can prevent and treat childhood obesity by increasing the energy expenditure. The higher activity coefficients (weekday 1.56, weekend 1.53) of the subjects was caused by the fact that rural students spent more time outside and enjoyed stronger activities than urban students. The results of this study can be used to estimate energy requirements for Korean children based on exercise levels and living areas.

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[English]
Assessment of Intake of Nutrient and Dietary Fiber among Children at the 6th Grade of Elementary School in Gimhae: Suk Hee Jung, Jung In Kim, Sang Ae Kim; Korean J Community Nutr 2005;10(1):12-21. Published online February 28, 2005

Abstract PDF: The aim of this study was to assess dietary fiber intake and the relationship between dietary fiber intake and nutrient intakes of elementary school students. Food consumption of 200 elementary school students (100 boys, 100 girls) in the 6th grade in Gimhae was assessed by 2-day estimated food records. Nutrient intakes were calculated using CAN-pro and total dietary fiber (TDF) intake using the TDF tables of the common Korean foods. The mean height and weight of the boys were 147.7 cm and 42.1 kg. The mean height and weight of the girls were 149.1 cm and 41.1 kg. The mean body mass index (BMI) of the boys (19.3 kg/m2) was significantly higher than that of the girls (18.4 kg/m2, p +/- 0.05). Average daily intake of energy of the boys and girls was 1733 and 1778 kcal, respectively. Intakes of protein, P, and niacin of the boys and girls exceeded 110% of current RDA. Intakes of Fe, vitamin B1, and vitamin B2 of the boys were similar to RDA. Intake of vitamin B1 exceeded 110% of current RDA and intakes of Fe and vitamin A were similar to RDA among the girls. Ca intake of the boys and girls was 74.2% and 60.1% of RDA, respectively. Vitamin C intake of the boys and girls were 63.6% and 71.7% of RDA, respectively. Intakes of fat, Ca, P, and vitamin B2 of the boys were significantly higher than the girls. Intakes of Fe and vitamin A of the boys were significantly lower than the girls. Average daily intakes of TDF of the boys and girls were 11.2 g and 11.1 g, respectively. TDF intake of the children at the 6th grade of elementary school was about 70% of "age (yr) + 5 g", a recommended level for American children. Major food groups to supply dietary fiber were vegetables, grains, and seasonings among the boys and girls. Major sources of dietary fiber were Kimchi, rice, and red pepper powder which supplied 17.85%. 15.71%, and 5.18% of TDF among the boys and 18.02%, 16.22%, and 6.58% among the girls. Daily fiber intake showed significant positive correlations with intakes of grains, vegetables, fruits, legumes, and seasonings among the boys and girls. Daily fiber intake showed significant positive correlations with intakes of energy, carbohydrates, protein, lipids, Ca, P, vitamin A, vitamin B1, vitamin B2, niacin, and vitamin C among both the boys and girls. From the results of this study we could conclude that it is recommended to increase dietary fiber intake in elementary school students at upper level.

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[English]
Factors Associated with Breakfast Skipping in Elementary School Children in Korea: Sang Jin Chung, Yoonna Lee, Sunja Kwon; Korean J Community Nutr 2004;9(1):3-11. Published online February 29, 2004

Abstract PDF: The objective of this study was to examine relationships between breakfast skipping and ecological factors related to eating practice. Participants were 537 children (male: 274, female: 263) from two elementary schools in Kyunggido (School A) and Seoul (School B). Analysis included cross-tabulation of demographics, factors related to eating practice and weight status, frequency of breakfast skipping and types of breakfast and the number of foods at breakfast by schools. Logistic regression were conducted to identify the factors associated with breakfast skipping. Children in school B showed higher socioeconomic status by living environment and the type of fathers' job than those in school A. Eighty six percent of children in school B and 75% in school A ate breakfast 5 times and more per week. School and father's occupation differences correlated with the frequency of breakfast, but not mother's employ status was not. After controlling school, type of father's job, mother's employ status, eating breakfast 5 times and more was associated with eating with other family members, feeling hungry before breakfast, normal weight status, eating Korean traditional meal type and number of food eaten at breakfast. The results stress the need for intervention programs aimed at decreased skipping breakfast among elementary school children. While programs need to reach all children skipping breakfast, approaches need to be suitable to in particular those from low socioeconomic backgrounds.

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[English]
Effect of obesity on the Satisfaction with School Lunches and the Behavior of Leaving Lunch Food in Elementary School Children: Sunja Kwon; Korean J Community Nutr 2001;6(2):139-149. Published online May 31, 2001

Abstract PDF: The purpose of this study was to investigate the effects of obesity on the satisfaction with school lunches and school lunch leftovers of elementary school children in the Kyeonggi area. The study was carried out on 235 children(male : 111, female :124) in December of 2000. The results are summarized as follows. A Rohrer index was used to define obesity. The proportions of severe underweight, underweight, normal, overweight, and obese were 0.9%, 16.6%, 57.9%,17.0%, and 7.7% respectively. For the data analysis, the subjects were divided into 3 groups : an underweight group(Rohrer index 109 including severe underweight), a normal group(Rohrer index 110-140), and an obese group(Rohrer index 141 including overweight). With regard to the satisfaction with school lunches, the proportions of children who were satisfied, neutral, and unsatisfied were 27.2%, 59.6% and 13.2% respectively. The proportion of the satisfaction with school lunches was significantly higher in the male group than in the female group(p<0.05), and the proportion of the dissatisfaction with school lunches was significantly increased with obesity index(p<0.05). The largest proportion of children who were satisfied with school lunches answered they felt hungry(56.3%) and the food tasted good(42.2%). Children sho were not satisfied with school lunches answered that the food was not tasty(93.5%), they did not have ant appetite(9.7%), and others. The children not finishing school lunches(leftovers) occasionally or always were 47.7% of the subjects. The behavior of leaving lunch foods was not significantly related to the gender or the frequency of eating snacks, wile it was positively related with dissatisfaction with school lunches(p<0.01), obesity index(p<0.05), and the decreased frequency of eating meals per day(p<0.01). The reasons of school lunch leftovers were food dislikes(67.9%), excess of quantity(39.3%), tastelessness(31.3%), poor appetite(13.4%), and other. The children eating meals twice, 3 times, and 4 times per day were 18.7%, 74.9%, and 6.4% of the subjects respectively. The proportions of the obese and the satisfaction with school lunches were not changed significantly according to the frequency of eating meals, while the proportion of children leaving school lunches was significantly higher in the group of eating meals twice per day than in the other groups(p<0.01). The frequency of eating snacks was not related to the obesity index, the proportion of school lunch leftovers, or the frequency of eating meals, while the proportion of satisfaction with school lunches was significantly higher in the group of eating snacks 1-2 times per day than in the other groups(p<0.01). In conclusion, it is necessary to have children enjoy school lunches with efforts to improve the food's taste in the school food services and to reexamine the serving sizes for the children, in addition to the nutrition education for the children to eat a variety of foods.

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[English]
Effect of Nutrition Education Program on Nutrition Knowledge, Dietary Diversity of Elementary School Children: Hyun Sook Yoon, Hal La Yang, Eun Sil Her; Korean J Community Nutr 2000;5(3):513-521. Published online September 30, 2000

Abstract PDF: The purpose of this study was to promote health for elementary school children. It was conducted with a 7 week program focused on the teaching of the food tower and evaluation of its educational effects. Subjects consisted of 75 boys and girls (control group : 37, treatment group : 38) in the 4th grade of elementary school. The results showed as follows. The proportion of boys was a little higher than that of girls. Of their mothers age, the thirties and forties were 66.7% and 33.3%, respectively. 61.3% of mothers had jobs and 86.7% of mothers prepared meals. The average of the anthropometric data of the 2 groups show were all in the normal range. The degree of nutritional knowledge in treatment group after education was significantly increased in all concepts, however, the degree of the control group appeared to show significant increase in only two concepts, such as "snack" and "one-sided diet". The diversity of dietary intake was investigated to evaluate the educational effect using food picture cards. The treatment group showed significant increase in all food groups except "cooked rice", "potatoes" and "fruits", but the control group showed no significant change. The level of nutrition knowledge has a significant correlation with the diversity of the food intake in the treatment group. The preferred lesson for children were "games", "doll playing" and "role playing". The impressive lesson contents were "diverse food intake without one-sided diet", "eating breakfast everyday", "choosing good snacks for health" and "eating less procesed food". These findings indicate that a well-designed program for nutrition education can help to change food habits, and that childrens education helps them to grow and to live as healthy adults. The performance of an educational program for preventive nutrition is more beneficial for children than for the adults based on the cost reduction and effect of this education.

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[English]
Nutritional Status and Food Preference of School Children in Ulsan: Hye Kyung Kim; Korean J Community Nutr 1999;4(3):345-355. Published online September 30, 1999

Abstract PDF: This study was intended to provide basic information for nutrition education and meal planning by evaluating the nutritional status, food habits, and food preference of elementary school children with school lunch program and without school lunch program(lunch box). The subjects of this study consisted of 266 elementary school children aged from 10 to 12(136 male, 130 female) in Ulsan the area. The survey was conducted by questionnaires and data were analyzed by SPSS program. The average body weight was 38.4+/-6.9 kg for boys and 36.8+/-7.4 kg for girls and the average heights was 141.3+/-5.6cm for boys and 141.2+/-5.7cm for girls. These values were lower than that of the Korean reference. 56.0% of the subjects skip breakfast 1 to 2 times a week, 58.2% of the subjects had prejudice for special food, such as bean, anchovy, and pork. The food habit scores of the subjects was divided into poor(11.7%), fair(63.5%), and good(24.8%). The average score of girl's was significantly(p<150) higher than that of the boy's. Compare to 1/3 of RDA for children, the average intake of nutrients provided lower amounts of all nutrients. Therefore Calcium and vitamin A intakes were especially lower than the others. Therefore the importance of milk and green vegetables must be emphsized to them through nutrition education. Children preferred ssalbab to jabkogbab and liked beef-based soup, and baechu kimchi. There were significant differences in food habit scores with gender, parent's education, and exercise. The results of this study indicate that nutrition education and menu planning program should be applied to elementary school children who are served by the school lunch program.

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[English]
The Study on the Food Habits and Prdferences of Elementary School Children: Nan Suk Lee, Yang Soon Im, Bok Ran Kim; Korean J Community Nutr 1997;2(2):187-196. Published online May 31, 1997

Abstract PDF: This study was carried out with 343(161 male, 182 female) elementary school children to investigate the relationship between 5th and 6th grade males and females of living in Chuncheon city. The degrees of going without a meal and overeating showed high in breakfast and dinner respectively. Also most children responded that they eat more than usual when they are under stress. After having dinner, 52.8% of the children ate snacks. 64.7% of the children have unbalanced diets with the main reason being they don't like the peculiar smell that some foods have. Most children sleep 8 hours and go to school on foot, and 74.3% of the children enjoy indoor activities in their spare time. The regularity of exercise shows a low level of 39.1%. In weight control, 51.0% of the children take no interest in it. Thirty percent of the children get their nutrition knowledge from school and the order of average mark of their nutrition knowledge is poor(40.5%), fair(36.4%), and excellent(23.0%). Most children like sweet taste. It is prevalent that the children think instant food is not good for their health, and their preference for instant food is on a fair level. The most popular instant food is in the order of ddogbbokki, ice-cream, kimbap, fried chicken and pork cutlet.

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