Korean Journal of Community Nutrition

Research Articles

[English]
Relationship of sodium index with the obesity indicators of university students in Daegu, South Korea: a cross-sectional study: Young-Won Jang, Jian Ma, Yeon-Kyung Lee; Korean J Community Nutr 2024;29(3):189-198. Published online June 30, 2024; DOI: https://doi.org/10.5720/kjcn.2024.29.3.189

Abstract PDF PubReader ePub: Objectives
The sodium index is an index that converts the estimated sodium intake calculated using a verified and reliable sodium estimation formula. This study aimed to determine the relationship between the sodium index and obesity indicators and the potential impact of excessive sodium consumption on obesity.
Methods
Obesity indicators, such as body mass index (BMI), body fat percentage, waist-to-hip ratio (WHR), and visceral fat levels, were analyzed in 120 university students (60 men and 60 women). The sodium index was calculated by indexing the estimated sodium intake according to age, sex, BMI, salt-eating habits, and salt-eating behaviors. The relationship between sodium index and obesity indicators was analyzed using multiple logistic regression.
Results
The estimated sodium intake was 3,907.1 mg, with 76.7% of the participants categorized under the “careful” level of sodium index and 10.8% under the “moderate” level. As the sodium index increased, the BMI, body fat percentage, WHR, and visceral fat levels significantly increased. All obesity indicators significantly increased in patients with a “severe” sodium index than in those with a “moderate” sodium index. In addition, a strong positive correlation was identified between obesity indicators and sodium index. When the “severe” sodium index was compared with the “moderate” sodium index, the risk of obesity based on body fat percentage increased by 2.181 times (95% confidence interval [CI], 1.526–3.118), while the risk of obesity based on visceral fat level increased by 4.073 times (95% CI, 2.097–7.911).
Conclusions
Our findings suggest a correlation between excessive sodium intake and obesity. Moreover, the sodium index can be used to determine sodium intake.

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[English]
Arterial stiffness index, physical activity and food and nutrient intake: cross-sectional study in adults aged 40 years and older: Eun-A Kim, Yun-Mi Kim, Eun-Kyung Kim; Korean J Community Nutr 2024;29(2):81-96. Published online April 30, 2024; DOI: https://doi.org/10.5720/kjcn.2024.29.2.81

Abstract PDF: Objectives
This study aimed to investigate arterial stiffness index, physical activity, and food and nutrient intake in middle-aged adults over 40 years when the incidence of cardiovascular disease begins to increase.
Methods
This study included 106 subjects (48 males and 58 females) aged between 40 and 64 years. The arterial stiffness index (brachial-ankle pulse wave velocity [baPWV], and anklebrachial index [ABI]) were measured using a blood pressure pulse wave testing device. Physical activity was assessed using the Korean version of the Global Physical Activity Questionnaire, and food and nutrient intake was calculated using the Food Frequency Questionnaire.
Results
The mean age of the subjects was 54.4 years. Although the ABI of the subjects was within the normal range, they were divided into tertiles to compare physical activity and food and nutrient intake. In males, the time spent on moderate to vigorous physical activity (MVPA) was significantly higher in T3 (600.6 min/week) than in T1 (304.4 min/week). In females, the time spent in sedentary behavior was significantly lower in T3 (294.5 min/week) than in T1 (472.1 min/week). In addition, the frequency of fish consumption was significantly higher in T3 (1.27 frequency/day) than in T1 (0.64 frequency/day) in females. Polyunsaturated fatty acid (PUFA) and ω-3 fatty acid intake, adjusted for energy intake, were significantly positively correlated with ABI (r = 0.200 and r = 0.218, respectively).
Conclusions
High MVPA (in males), low sedentary behavior (in females), and PUFA and ω-3 fatty acid intake through fish consumption may be associated with low peripheral artery stiffness. Therefore, arteriosclerosis can be prevented through physical activity and proper dietary therapy.

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[English]
Dietary intake and food sources of essential fatty acids among Korean adolescents: a cross-sectional study based on the 2016–2021 KNHANES data: Enkhgerel Erdenetsetseg, Hye Ran Shin, SuJin Song; Korean J Community Nutr 2024;29(2):144-155. Published online April 30, 2024; DOI: https://doi.org/10.5720/kjcn.2024.29.2.144

Abstract PDF: Objectives
This study evaluated dietary intake and food sources of essential fatty acids in Korean adolescents.
Methods
This study was comprised of 3,932 adolescents (9–18 years) who participated in the 2016–2021 Korea National Health and Nutrition Examination Surveys. Dietary intake and food sources of essential fatty acids, including alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and linoleic acid (LA) were evaluated using data obtained from one-day 24-hour dietary recall. The proportions of adolescents consuming ALA, EPA + DHA, and LA above or below the adequate intake (AI) of the 2020 Dietary Reference Intakes for Koreans were calculated. All statistical analyses accounted for the complex sampling design effect and appropriate sample weights.
Results
The mean intakes of ALA, EPA, DHA, and LA among Korean adolescents were 1.29 g/day, 69.6 mg/day, 166.0 mg/day, and 11.1 g/day, respectively. Boys had higher intakes of all essential fatty acids compared to girls. By age group, adolescents aged 15–18 years showed lower intakes of EPA and DHA compared to adolescents in younger age groups. The 9–11-yearold adolescents had lower intakes of ALA and LA than older adolescents. The proportions of adolescents who consumed more than AI were 35.7% for ALA, 30.4% for EPA + DHA, and 41.5% for LA. Adherence to the AI for ALA did not differ by sex or age group, although boys showed a lower adherence to the AI for EPA + DHA than girls. Major food sources for ALA and LA were plant-based oils, mayonnaise, pork, and eggs. Mackerel was the most significant contributor to EPA and DHA intake (EPA, 22.6%; DHA, 22.2%), followed by laver, squid, and anchovy.
Conclusions
The proportion of Korean adolescents who consumed EPA + DHA more than AI was low. Our findings highlight that nutrition education emphasizing an intake of essential fatty acids from healthy food sources is needed among Korean adolescents.

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[Korean]
Estimating and evaluating usual total fat and fatty acid intake in the Korean population using data from the 2019–2021 Korea National Health and Nutrition Examination Surveys: a cross-sectional study: Gyeong-yoon Lee, Dong Woo Kim; Korean J Community Nutr 2023;28(5):414-422. Published online October 31, 2023; DOI: https://doi.org/10.5720/kjcn.2023.28.5.414

Abstract PDF

Objectives
This study evaluated usual dietary intakes of total fat and fatty acids among the Korean population based on the revised Dietary Reference Intakes for Koreans 2020 (2020 KDRIs).
Methods
This study utilized data from the eighth Korea National Health and Nutrition Examination Survey (KNHANES 2019–2021). We included 18,895 individuals aged 1 year and above whose 1-day 24-hour dietary recall data were available. To calculate the external variability using the National Cancer Institute 1-day method, data from the U.S. NHANES 2017-March 2020 Pre-pandemic dataset were employed. The total fat and fatty acid intake were evaluated based on the Acceptable Macronutrient Distribution Ranges (AMDRs) and Adequate intake (AI) of 2020 KDRIs for each sex and age groups.
Results
Approximately 86% of the Korean population obtained an adequate amount of energy from total fat consumption (within the AMDRs), indicating an appropriate level of intake. However, the percentage of individuals consuming saturated fatty acids below the AMDR was low, with only 12% among those under 19 years of age and 52% aged 19 years and older. On a positive note, approximately 70% of the population showed adequate consumption of essential fatty acids, exceeding the AI. Nevertheless, monitoring the intake ratio of omega 3 (n-3) to omega 6 (n-6) fatty acids is essential to ensure an optimum balance.
Conclusions
This study explored the possibility of estimating the distribution of nutrient intake in a population by applying the external variability ratio. Therefore, if future KNHANES conduct multiple 24-hour recalls every few years-similar to the U.S. NHANESeven for a subset of participants, this may aid in the accurate assessment of the nutritional status of the population.

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The association between COVID-19 and changes in food consumption in Korea: analyzing the microdata of household income and expenditure from Statistics Korea 2019–2022
Haram Eom, Kyounghee Kim, Seonghwan Cho, Junghoon Moon
Journal of Nutrition and Health.2024; 57(1): 153. CrossRef
Dietary intake and food sources of essential fatty acids among Korean adolescents: a cross-sectional study based on the 2016–2021 KNHANES data
Enkhgerel Erdenetsetseg, Hye Ran Shin, SuJin Song
Korean Journal of Community Nutrition.2024; 29(2): 144. CrossRef

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[Korean]
The Consumption Pattern of Sugar-Sweetened Beverages and its Comparison with Body Composition Change from a Four-Week Time-Restricted Eating Intervention in Korean Young Adults: SuJeong Park, YoonJu Song; Korean J Community Nutr 2022;27(1):36-46. Published online February 28, 2022; DOI: https://doi.org/10.5720/kjcn.2022.27.1.36

Abstract PDF

Objectives
The purpose of this study was to evaluate the consumption pattern of sugarsweetened beverages (SSB) and compare body composition changes by SSB consumption based on 28 days of dietary records from a four-week time-restricted eating intervention among young adults in Korea.
Methods
A total of 33 participants completed the four-week dietary intervention with 8-hour time-restricted eating (TRE). The body composition was measured by bioelectrical impedance analysis at baseline, and daily dietary records were collected for 28 days during the intervention after 4 weeks.
Results
Based on 924 days of dietary records, the average eating occasion of SSB was 0.9 times per day, and the average amount of SSB was 205.8 g/times. Based on an individual’s usual intake of 28 days, the average eating frequency of SSB was 16.6 times out of 28 days, and the average amount of SSB was 184.0 g/day. The average energy intake from SSB was 131.0 kcal /day (8.7% of energy), and sugar intake from SSB was 18.2 g/day (4.9% of energy). The sugar intake was 2.6% of energy from sweetened dairy products, followed by 2.0% from coffee drinks, 0.5% from soda and juice and 0.2% from others. When subjects were divided into high (14 days or more) and low (less than 14 days) SSB groups based on eating frequency, the weight change in the low SSB group was -2.0 kg over 4 weeks, which was significantly lower than -0.7 kg in the high SSB group. However, no significant difference was found in muscle mass, fat mass and body fat percent between the two groups.
Conclusions
This study suggests that low consumption of sugar-sweetened beverages is more desirable in weight management despite having the dietary intervention of timerestricted eating without counting calories. Thus, further longitudinal studies on the association between SSB and obesity in Korean adults are necessary.

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Nutrition Knowledge, Dietary Attitude, and Dietary Behavior among Children and Adolescents with Type 1 Diabetes
Na-Yeon Noh, So-Young Nam, Hee-Suk Kang, Ji-Eun Lee, Soo-Kyung Lee
Korean Journal of Community Nutrition.2013; 18(2): 101. CrossRef
Needs Assessment for Web-based Self-management Program by the Nutrition Knowledge Levels of Diabetic Patients
Yun Ahn, Jeahurn Bae, Jung Eun Youn, Hee-Seon Kim
Korean Journal of Community Nutrition.2011; 16(1): 155. CrossRef

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[Korean]
Regional Differences in Dietary Total Fat and Saturated Fatty Acid Intake and Their Associations with Metabolic Diseases among Korean Adults: Using the 2016~2019 Korea National Health and Nutrition Examination Surveys: SuJin Song, Jae Eun Shim; Korean J Community Nutr 2021;26(6):495-507. Published online December 31, 2021; DOI: https://doi.org/10.5720/kjcn.2021.26.6.495

Abstract PDF

Objectives
This study examined regional differences in the intake of dietary total fat and saturated fatty acid (SFA) and their food sources among Korean adults. We also investigated the associations of SFA intake with metabolic diseases by region.
Methods
This study included 13,926 adults ( 19y) who participated in the 2016 ~ 2019 Korea National Health and Nutrition Examination Surveys. The regions were divided into urban and rural areas according to the administrative districts where the participants lived. Using dietary data obtained from a 24-h recall, intake of total fat and SFA and their food sources were assessed by region. Metabolic diseases included obesity, abdominal obesity, and elevated total cholesterol and their association with SFA intake by region were examined using multiple logistic regression.
Results
Of the participants, 19.6% lived in rural areas. In urban areas, the total fat and SFA intakes were higher than in rural areas: 21.2% of energy (%E) came from total fat and 6.9%E from SFA in urban areas, whereas 18.0%E came from total fat and 5.8%E from SFA in rural areas. The percentage of participants who exceeded the dietary reference intakes for total fat and SFA in urban areas was 16.5% and 41.9%, respectively, but 43.4% of participants in rural areas showed lower intake levels for total fat compared to the reference level. Young adults did not show regional differences in fat intake, and the percentage of subjects who exceeded the reference for SFA was high both in urban (58.5%) and rural (55.7%) areas. Among middle-aged and older adults, intake of fatty acids except for n-3 fatty acid was significantly higher in urban areas than in rural areas. About 69% of older adults in rural areas showed a lower intake of total fat compared to the reference level. The food sources for total fat and SFA were meat, soybean oil, eggs, and milk in both areas. The intake of fat from eggs, milk, mayonnaise, and bread was higher in urban areas, but the intake of fat from white rice and coffee mix was higher in rural areas. The SFA intake was positively associated with elevated serum total cholesterol in urban areas (4th quartile vs. 1st quartile, OR: 1.22, 95% CI: 1.06-1.40, P for trend: 0.043), but not in rural areas.

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Regional differences in protein intake and protein sources of Korean older adults and their association with metabolic syndrome using the 2016–2019 Korea National Health and Nutrition Examination Surveys: a cross-sectional study
You-Sin Lee, Yoonna Lee
Korean Journal of Community Nutrition.2024; 29(3): 173. CrossRef
Estimating and evaluating usual total fat and fatty acid intake in the Korean population using data from the 2019–2021 Korea National Health and Nutrition Examination Surveys: a cross-sectional study
Gyeong-yoon Lee, Dong Woo Kim
Korean Journal of Community Nutrition.2023; 28(5): 414. CrossRef
Associations of Dietary Intakes of Total and Specific Types of Fat with Blood Lipid Levels in the Filipino Women’s Diet and Health Study (FiLWHEL)
Heejin Lee, Hyojin Kim, Sherlyn Mae P. Provido, Minji Kang, Grace H. Chung, Jae W. Lee, Sangmo Hong, Sung Hoon Yu, Chang Beom Lee, Jung Eun Lee
Global Heart.2023; 18(1): 29. CrossRef
Regional Differences in Metabolic Risk in the Elderly in Korea
Ji-Myung Kim, Yun-Jung Bae
International Journal of Environmental Research and Public Health.2022; 19(18): 11675. CrossRef

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Original Articles

[English]
Effects of Low-carbohydrate and High-fat Diet Supplemented with Ketogenic Drink on Cognitive Function and Physical Performance in the Elderly at High Risk for Dementia: Eun Ji Kim, Jung Sik Park, Won Sun Choi, Yoo Kyoung Park; Korean J Community Nutr 2019;24(6):525-534. Published online December 31, 2019; DOI: https://doi.org/10.5720/kjcn.2019.24.6.525

Abstract PDF PubReader

OBJECTIVES
Reduced glucose utilization in the main parts of the brain involved in memory is a major cause of Alzheimer's disease, in which ketone bodies are used as the only and effective alternative energy source of glucose. This study examined the effects of a low-carbohydrate and high-fat (LCHF) diet supplemented with a ketogenic nutrition drink on cognitive function and physical activity in the elderly at high risk for dementia.
METHODS
The participants of this study were 28 healthy elderly aged 60-91 years showing a high risk factor of dementia or whose Korean Mini-Mental State Examination (K-MMSE) score was less than 24 points. Over 3 weeks, the case group was given an LCHF diet with nutrition drinks consisting of a ketone/non-ketone ratio of 1.73:1, whereas the control group consumed well-balanced nutrition drinks while maintaining a normal diet. After 3 weeks, K-MMSE, body composition, urine ketone bodies, and physical ability were all evaluated.
RESULTS
Urine ketone bodies of all case group subjects were positive, and K-MMSE score was significantly elevated in the case group only (p=0.021). Weight and BMI were elevated in the control group only (p<0.05). Grip strength was elevated in all subjects (p<0.01), and measurements of gait speed and one leg balance were improved only in the case group (p<0.05).
CONCLUSIONS
We suggest that adherence to the LCHF diet supplemented with a ketogenic drink could possibly influence cognitive and physical function in the elderly with a high risk factor for dementia. Further, we confirmed the applicability of this dietary intervention in the elderly based on its lack of any side effects or changes in nutritional status.

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To Keto or Not to Keto? A Systematic Review of Randomized Controlled Trials Assessing the Effects of Ketogenic Therapy on Alzheimer Disease
Maria G Grammatikopoulou, Dimitrios G Goulis, Konstantinos Gkiouras, Xenophon Theodoridis, Kalliopi K Gkouskou, Athanasios Evangeliou, Efthimis Dardiotis, Dimitrios P Bogdanos
Advances in Nutrition.2020; 11(6): 1583. CrossRef

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[English]
Evaluation of Total Fat and Fatty Acids Intakes in the Korean Adult Population using Data from the 2016–2017 Korea National Health and Nutrition Examination Surveys: SuJin Song, Jae Eun Shim; Korean J Community Nutr 2019;24(3):223-231. Published online June 30, 2019; DOI: https://doi.org/10.5720/kjcn.2019.24.3.223

Abstract PDF PubReader

OBJECTIVES
This study evaluated dietary intakes of total fat and fatty acids among the Korean adult population.
METHODS
This cross-sectional study used the 2016â€“2017 Korea National Health and Nutrition Examination Survey data. A total of 10,772 subjects aged â‰¥19 y for which dietary data were available were selected. Data pertaining to energy and nutrient intakes were obtained by a 24-h recall method. Total fat and fatty acids intakes were evaluated based on the Acceptable Macronutrient Distribution Ranges (AMDR) of 2015 Dietary Reference Intakes for Koreans by sex and age groups. All statistical analyses accounted for the complex sampling design effect and sampling weights.
RESULTS
The mean intakes of energy and total fat were 1,952 kcal (95% CI: 1928â€“1977) and 46.1 g (45.2â€“47.1), respectively, and about 21% of the energy was obtained from fat in this study population (21.7% in men and 20.2% in women). The mean percentages of energy from saturated, monounsaturated, and polyunsaturated fatty acids were 6.4%, 6.7%, and 5.2%, respectively. About 18% of adults exceeded the AMDR for fat (30% of energy), whereas 37.6% exceeded the AMDR for saturated fatty acids (7% of energy). The proportions of subjects who consumed more than the AMDR for fat and saturated fatty acids decreased across age groups in both sexes. Among young adults (19â€“29 y), about 63% of the subjects obtained â‰¥7% of their energy from saturated fatty acids. About 61% of older adults obtained less than 15% of their energy from total fat.
CONCLUSIONS
Increased intake of fat energy was prominent in saturated fatty acids. Our findings suggest current information on total fat and fatty acids intakes in Korean adults and can be used to provide dietary guidelines for the improvement of public health.

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Dietary patterns derived by reduced rank regression are associated with lipid disorders among Korean adults: a cross-sectional analysis
Hyun Ah Kim, Hye Ran Shin, SuJin Song
Lipids in Health and Disease.2024;[Epub] CrossRef
Dietary intake and food sources of essential fatty acids among Korean adolescents: a cross-sectional study based on the 2016–2021 KNHANES data
Enkhgerel Erdenetsetseg, Hye Ran Shin, SuJin Song
Korean Journal of Community Nutrition.2024; 29(2): 144. CrossRef
Evaluation of Nutritional Content of Snacks for Smart Snack Choices
Chae Young Yoon, Eunju Kim
Journal of the East Asian Society of Dietary Life.2023; 33(4): 264. CrossRef
Trends in dietary intake and food sources of long-chain polyunsaturated fatty acids among Korean adults between 2007 and 2018
Jae Eun Shim, Youngmi Lee, SuJin Song
Epidemiology and Health.2023; : e2023069. CrossRef
Diabetes and Dietary Fats
Jae Won Cho
The Journal of Korean Diabetes.2023; 24(3): 154. CrossRef
Association of Saturated Fatty Acid Intake and Its Food Sources With Hypercholesterolemia in Middle-Aged Korean Men and Women
In Young Jeong, Jae Eun Shim, SuJin Song
CardioMetabolic Syndrome Journal.2022; 2(2): 142. CrossRef
Increasing trends in dietary total fat and fatty acid intake among Korean children: using the 2007–2017 national data
SuJin Song, Jae Eun Shim
Nutrition Research and Practice.2022; 16(2): 260. CrossRef
Substitution of Carbohydrates for Fats and Risk of Type 2 Diabetes among Korean Middle-Aged Adults: Findings from the Korean Genome and Epidemiology Study
Hye-Ah Lee, Hyesook Park
Nutrients.2022; 14(3): 654. CrossRef
Food behaviors accounting for the recent trends in dietary fatty acid profiles among Korean adults
SuJin Song, Jae Eun Shim
Nutrition Research and Practice.2022; 16(3): 405. CrossRef
Current status of nutrient intake in Korea: focused on macronutrients
Seung-Won Oh
Journal of the Korean Medical Association.2022; 65(12): 801. CrossRef
Regional Differences in Dietary Total Fat and Saturated Fatty Acid Intake and Their Associations with Metabolic Diseases among Korean Adults: Using the 2016~2019 Korea National Health and Nutrition Examination Surveys
SuJin Song, Jae Eun Shim
Korean Journal of Community Nutrition.2021; 26(6): 495. CrossRef
The number of teeth is associated with diet quality in Korean adult population
Hye-Sun Shin
Archives of Oral Biology.2020; 118: 104882. CrossRef
Trends in Dietary Intake of Total Fat and Fatty Acids Among Korean Adolescents from 2007 to 2017
SuJin Song, Jae Eun Shim
Nutrients.2019; 11(12): 3073. CrossRef

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[English]
Milk Intake Patterns with Lactose and Milk Fat in Korean Male Adults: Jung Hyun Kim, Min Sook Kyung, Sung Hee Min, Myung Hee Lee; Korean J Community Nutr 2018;23(6):488-495. Published online December 31, 2018; DOI: https://doi.org/10.5720/kjcn.2018.23.6.488

Abstract PDF PubReader

OBJECTIVES
This study examined the milk intake patterns with lactose and milk fat in Korean male adults using the following variables: milk intake level, awareness of lactose, and milk fat, health problems, and necessity of milk intake. In addition, the factors affecting milk intake were analyzed by multiple regression analysis.
METHODS
The subjects were 532 males aged 20 years or older among the nationwide milk purchasing group. The subjects were 223 (41.9%) in the 20â€“29 year age group, 188 (35.3%) in the 30â€“49 year age group and 121(22.7%) in the over 50 year age group. The survey was conducted using ANOVA and multiple comparative analysis to examine the differences in age and multiple regression analysis was performed to investigate the factors affecting the intake of milk.
RESULTS
The intake of milk in the subjects was 538.14 Â± 494.23 ml per week. There were statistically significant differences in the subjects' age according to processed milk, low fat, nonfat milk, cheese, and ice cream. The perception of milk and lactose and milk fat was recognized as a good food for skeletal health when milk was consumed. Among the milk nutrients, lactose was highly recognized at the age of 20â€“29, and milk fat was recognized in those over 50 years. In addition to lactose and milk fat, calcium was the most highly recognized among the milk nutrients. Health problems associated with milk were skeletal health, obesity, and lactose intolerance. The perception of lactose intolerance was related to lactose intolerance and fatness, and the dietary behavior was unaffected.
CONCLUSIONS
This study examined the milk intake patterns of adult Korean males. Many variables were found to be related to the intake of milk. In this study, the milk intake was high when there was no problem with the perception and dietary behaviors of milk nutrition (lactose and milk fat). This study focused on lactose and milk fat, which are major nutrients in milk, and it is a new perspective study among milk-related research.

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Association of milk and dairy product consumption with the incidence of cardio-cerebrovascular disease incidence in middle-aged and older Korean adults: a 16-year follow-up of the Korean Genome and Epidemiology Study
Yeseung Jeong, Kyung Won Lee, Hyekyeong Kim, Yuri Kim
Nutrition Research and Practice.2023; 17(6): 1225. CrossRef

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[English]
Relationship among Life Stress, Dietary Behaviors and High-fat Snack Intake in High School Students in Gyeonggi Area: Seorin Doo, Youngmi Lee, Haeryun Park, Kyunghee Song; Korean J Community Nutr 2017;22(4):289-297. Published online August 31, 2017; DOI: https://doi.org/10.5720/kjcn.2017.22.4.289

Abstract PDF PubReader

OBJECTIVES
Stress during adolescence is related to undesirable nutritional intake and negatively affects the growth and development. This study was performed to investigate the relationship among life stress, dietary behaviors and the intake of high-fat containing snacks in male and female high school students in Gyeonggi-do area.
METHODS
The subjects were 700 high school students (350 males, 350 females) in Gyeonggi-do from July to September 2014 and the survey was performed by using questionnaire that included general characteristics, dietary behaviors, high-fat containing snacks intake, and daily life stress.
RESULTS
There was a gender difference in health-related life style and dietary behaviors, and the life stress was significantly higher in female students than in male students. For health-related life style, exercise frequency, hours of sleep and conversation time with parents had significantly negative correlations with life stress, while smoking and perceived stress had significantly positive correlations with life stress. For dietary behaviors, the frequency of eating-out had a significantly negative correlation with life stress, while the changes in amount of meal intake under stress had a significantly positive correlation with life stress. The fat intake of â€˜high-stress groupâ€™ was significantly higher and high-fat containing snacks consumed by this group consisted of cookies, honey bread and fried foods.
CONCLUSIONS
It is necessary to develop appropriate programs for the emotional stability and stress relief of adolescents that provide continuous nutrition education focused on proper snack intake, desirable dietary behaviors and nutritional aspects.

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Effects of watching Mukbang and Cookbang videos on adolescents’ dietary habits and mental health: cross-sectional study using the 18th Korea Youth Risk Behavior Survey
Seung-Hee Hong
Korean Journal of Community Nutrition.2024; 29(2): 156. CrossRef
Study on the relationship between dietary habits and the quality of life of some high school students in Seoul based on the nutrition quotient for adolescents (NQ-A)
Ho-Jung Kim, Jung-Sug Lee, Yookyung Kim
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Life stress, dietary attitudes, and frequency of snack intake for college students in Seoul and Gyeonggi area: the difference between male and female students
Hyun Seung Oh, Yu bin Kim, Soyoung Park, Kyunghee Song
Nutrition Research and Practice.2023; 17(1): 91. CrossRef
Actual Status of Mukbang Viewing and Food Habits of University Students in Wonju Area
Seung-Lim Lee, Sun Hee Lee
The Korean Journal of Community Living Science.2022; 33(4): 631. CrossRef
Assessment of Sugar and Sodium Contents and Their Intakes in Snack Food Groups : A Focus on Cookies, Nuts, Fruits, Dairy Products, and Beverages
Yun-Jung Bae, Kyoung-A Choi, Yu-Mi Kim, Mi-Kyeong Choi
Journal of the East Asian Society of Dietary Life.2022; 32(4): 263. CrossRef
A Comparative Study of the Dietary Behavior of Adults Aged 20 and Over according to theMukbangViewing Time
Ha-Yan Nam, Bok-Mi Jung
Korean Journal of Community Nutrition.2021; 26(2): 93. CrossRef
Relationship between Dietary Habits, Life Stress and Nutrition Knowledge of High School Students in Gyeonggi Area
Kyung Ae Park, Hongmie Lee, Kyunghee Song
Korean Journal of Community Nutrition.2020; 25(2): 126. CrossRef
Association between Stress and Nutritional status of High School Students in Chungbuk using Nutrition Quotient for Korean Adolescents
In Young Kim, Mi-Kyeong Choi
Korean Journal of Community Nutrition.2020; 25(5): 361. CrossRef
Relationship between Dietary Behaviors and Life Stress of Middle School Students in Gyeonggi Area
Kyung Ae Park, Myoung Sook Lee, Kyung Hee Song
Korean Journal of Community Nutrition.2019; 24(5): 384. CrossRef
Body Image Perception and Eating Behaviors among Male Middle and High School Students according to Weight Status in Seoul
Bo-Mi Kim, Kyung-Hee Kim
Journal of the East Asian Society of Dietary Life.2018; 28(2): 123. CrossRef

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[English]
Lifestyle, Diet, Self-care, and Diabetes Fatalism of Diabetic Patients with and without Diabetic Foot: Jungha Choi, Juhee Kang, Hongmie Lee; Korean J Community Nutr 2014;19(3):241-249. Published online June 30, 2014; DOI: https://doi.org/10.5720/kjcn.2014.19.3.241

Abstract PDF PubReader

OBJECTIVES
This study was to determine diabetes fatalism of diabetic patients with and without diabetic foot and its association with lifestyle, diet, and self-care.
METHODS
The subjects were diabetic patients with (male/female 48/21) and without diabetic foot (male/female 33/26). We administered the questionnaires which were designed to determine diabetes fatalism, lifestyle, diet, and self-care. Diabetes fatalism was determined by Diabetes fatalism scale (DFS), which consisted of total 12 items in three subscales namely, emotional stress, religiou.spiritual coping, and perceived self-efficacy.
RESULTS
The patients with diabetic foot had undesirable diets more frequently (1.37 and 0.91 days/week respectively) and their desirable diets (2.74 and 3.61 days/week respectively) and foot care (4.61 and 5.53 days/week respectively) were less frequent than those without diabetic foot (p < 0.05). An item analysis of the 12 DFS items revealed a Chronbach' alpha of 0.614 and 0.869, respectively in diabetic patients with and without diabetic foot. Perceived self-efficacy related DFS of subjects without diabetic foot was positively associated with smoking (r = 0.350, p < 0.01), undesirable diet (r = 0.295, p < 0.05), and drinking (r = 0.257, p < 0.05), while its negative association with exercise (r = -0.224, p < 0.088) and foot care (r = -0.247, p < 0.059) did not reach to statistical significance.
CONCLUSIONS
This work was the first study reporting the potential usefulness of DFS, especially perceived self-efficacy related subscale as a predictor of lifestyle, diet and self-care on the Korean diabetic patients, at least those without severe diabetic foot to screen those who should be the first target for diabetes education.

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Factors Influencing Glycemic Control by gender in Workers with Diabetes Mellitus
Eun Hee Jang
The Korean Journal of Rehabilitation Nursing.2018; 21(2): 121. CrossRef
Association of selected health behaviors with perceived health, depressive symptom and fatalism among the aged 50-69 living in Seoul
Eun Jin Choi, Min Hye Kim
Korean Journal of Health Education and Promotion.2015; 32(2): 53. CrossRef

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[English]
A Study on Classification of Obesity for Koreans based on the Articles in the Korean Journal of Community Nutrition: Articles Enlisted from 1996 to 2011: Youngnam Kim; Korean J Community Nutr 2013;18(5):525-538. Published online October 31, 2013; DOI: https://doi.org/10.5720/kjcn.2013.18.5.525

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The purpose of this study was to provide information on obesity assessment for Koreans. Among total of 1012 research papers enlisted in the Korean J Community Nutrition form 1996 to 2011, 248 articles were examined in which subjects were divided into more than 2 groups by obesity rate. About the method of anthropometric data collection, more than half of the research papers examined 52.5% and 28.7% of studies utilized the directly measured data and self-described data, respectively. About the utilization of obesity assessment methods, indirect methods of weight-height index (BMI, BMI percentile, and Rohrer index) and PIBW (WLR, Broca index, and KDA) were 62.4% and 23.2%, respectably, and the direct method of percent body fat assessment was only 9.3%. The most frequently utilized methods were WLR in under primary and primary school children, and BMI in the middle and high school students and in adults. For primary school students, WLR was the most frequently utilized method up to 2007, but it changed to BMI percentile afterward. Broca Index was no longer utilized since 2008. There were no articles utilizing BMI percentile and Rohrer index for obesity assessment in adults. Criteria for obesity assessment were not consistent among research papers: for example, % body fat, 19~40%; BMI, 20~30; BMI percentile, 85th or 95th. In the case of PIBW, 120% of ideal weight was the most frequently utilized criterion for obesity. Based on these findings, we suggest that proper methods and criteria of obesity assessment for each age group should be determined and proclaimed.

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Factors Contributing to Diabetic Foot Ulcer among Patients with Type 2 Diabetes Mellitus
Seo Jin Park, Taeyoung Yang, Jun Young Lee, Jinhee Kim
Korean Journal of Adult Nursing.2018; 30(1): 106. CrossRef
A Comparative Study of Dietary and Weight Control Behavior of Female College Students in Korea and China
Li Song, Na Young An, Ho Kyung Ryu
The Korean Journal of Community Living Science.2015; 26(4): 761. CrossRef

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[English]
Nutrient Intake, the Concentrations of Leptin, Adiponectin, Cotisol & Insulin by the Body Fat Content of Women: Soon Yei Lee, Hyun Sook Bae; Korean J Community Nutr 2012;17(6):714-723. Published online December 31, 2012; DOI: https://doi.org/10.5720/kjcn.2012.17.6.714

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The aim of this study was to compare nutrient intakes, serum hormones (leptin, adiponectin, insulin), salivary cortisol and alpha-amylase of middle-aged women by the percentage of body fat (% fat). Subjects were assigned to 3 groups by body fat (%) group I (27.5%), group II (32.5%), group III (37.7%). WHR of group II (0.97) was significantly higher than of group I, III (0.95) (p < 0.05). Nutrient intakes were not different among 3 groups. Serum leptin levels of group III (16.53 microgram/ml) were higher than in group I (10.07 microgram/ml), group II (12.24 microgram/ml) (p < 0.05). Salivary cortisol levels of group II (0.39 microgram/dl) were higher than in group I (0.17 microgram/dl) and group III (0.15 microgram/dl) (p < 0.05). Adiponectin concentrations were negatively correlated with TAS (r = -0.29) and positively correlated with HDL cholesterol (r = 0.27). Insulin levels were negatively correlated with total cholesterol (r = -0.33), Zn intake (r = -0.31) and positively correlated with WHR (r = 0.31). The overall anthropometric indices showed positive relations with leptin levels. Salivary cortisol levels were positively corelated with WHR (r = 0.28), total cholesterol (r = 0.31), MDA (r = 0.29) and intakes of SFA (r = 0.35) and MUFA (r = 0.3). Salivary amylase levels were positively correlated with overall nutrient intakes (energy, CHO, fat, cholesterol. Fe, SFA, MUFA, Zn, Na, vitamin B2, r = 0.24-0.5) and was negatively correlated with HDL cholesterol (r = -0.34). These results suggested that 1) WHR would be a helpful index in the assessment of metabolic risk diseases. 2) Understanding of individual stress exposure should be considered in developing strategies for prevention and treatment of obesity.

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Relationships among Muscle Mass and Obesity, Metabolic Syndrome, Physical Activity, and Nutrient Intake in Elderly Women: Based on the 4th-5th (2008-2011) Korean National Health and Nutrition Examination Survey (KNHANES)
Doo-Hwan Jung, Jung-Hyun Kim
The Korean Journal of Community Living Science.2018; 29(4): 469. CrossRef

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The Relationship between beta-cell Function and Nutrient Intakes in Korean Adult: Using 4th Korea National Health and Nutrition Examination Survey 2009: You Mi Lee, Hye Kyung Chung, Heejin Kimm, Sun Ha Jee; Korean J Community Nutr 2012;17(2):243-257. Published online April 30, 2012; DOI: https://doi.org/10.5720/kjcn.2012.17.2.243

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The purpose of this study was to evaluate pancreatic beta-cell function of Korean adult and to examine the associations between beta-cell function and nutrient intakes. Data were analyzed for 1,917 male and 2,885 female subjects older than 30 years using 'The Forth Korean National Health and Nutrition Survey in 2009'. We calculated HOMA beta-cell (The homeostasis model assessment of beta-cell function) using fasting glucose and fasting insulin for assessing beta-cell function. Subjects were divided into HHG (High HOMA beta-cell Group) or LHG (Low HOMA beta-cell Group) according to median of HOMA beta-cell, and then nutrient intakes were compared between two groups. In the entire study population, HHG showed lower percent of carbohydrate intakes (p < 0.05), and higher fat (p < 0.01), percent of fat (p < 0.05), vitamin A (p < 0.05), carotene (p < 0.05) and riboflavin (p < 0.05) intakes than LHG. In addition, levels of HOMA beta-cell were negatively correlated with percent of carbohydrate (beta = -0.040, p < 0.05), and positively correlated with percent of fat (beta = 0.046, p < 0.01). The subjects were then divided into two subgroups according to body mass index values, either < 23 kg/m2 (under- and normal-weight) or > or = 23 kg/m2 (over-weight and obese). Significant differences of some nutrients intakes and correlations with HOMA beta-cell were observed only in under- and normal weight subjects, but not in over-weight and obese subjects. In conclusion, high carbohydrate, lower fat and lower vitamin intakes may be related with pancreatic beta-cell dysfunction in under- and normal-weight Korean.

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Beta-Cell Function and Nutrient Intake
You Mi Lee
The Journal of Korean Diabetes.2016; 17(3): 190. CrossRef
Alcohol Use Behaviors, Fat Intake and the Function of Pancreatic β-Cells in Non-Obese, Healthy Korean Males: Findings from 2010 Korea National Health and Nutrition Examination Survey
Hye-Kyung Chung, Yoonsu Cho, Min-Jeong Shin
Annals of Nutrition and Metabolism.2013; 62(2): 129. CrossRef

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[English]
A Study of Nutrient Intakes, Blood Lipids and Bone Mineral Density according to Obesity Degree by Percentage of Body Fat and Age between Male and Female Teacher in Jeonbuk Province, Korea: Hye Soon Chang; Korean J Community Nutr 2012;17(1):49-68. Published online February 29, 2012; DOI: https://doi.org/10.5720/kjcn.2012.17.1.49

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The purpose of this study was to compare nutrient intakes, blood lipids and bone mineral density of male (n = 59) and female (n = 172) teachers according to the obesity index by percentage of body fat and age. The energy intakes of obesity group were higher than normal group in male (p < 0.05), but were not significant in female. The protein intake ratio among three energy nutrients for male was higher than female (p < 0.001), and lipid intake ratio of obesity group in female was a little higher than male that was not significant. TC, LDL, TC/HDL, risk of coronary heart disease, blood glucose and blood pressure of obesity group were higher than normal group in female (p < 0.01 ~ p < 0.001), but were little significance in male. Risk of coronary heart disease was affected by gender (p < 0.001), obesity degree (p < 0.01), age (p < 0.001), and interaction of gender and age (p < 0.001). Blood glucose was affected by obesity degree (p < 0.05), but was not affected by age. T-scores of forearm for female (= -1.42) were lower than that of male (= -0.95), and T-scores of obesity group in male (= 0.12) were higher than that of normal group (= -0.33) but were not significant in female. The T-scores of forearm for female were affected by age (p < 0.05) and gender (p < 0.01), but calcaneus was not affected by gender. These results suggest lipid intake ratio should be balanced for obesity group in female. Nutritional education for treatment obesity to prevent hyperlipidemia and arteriosclerosis is necessary for obesity group and older age groups. T-scores of forearm were lower than calcaneus, so arm exercise would be especially required to prevent osteoporosis for older age women groups.

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Machine learning-based obesity classification considering 3D body scanner measurements
Seungjin Jeon, Minji Kim, Jiwun Yoon, Sangyong Lee, Sekyoung Youm
Scientific Reports.2023;[Epub] CrossRef
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Jiang Zhao, Chi Zhang, Weihao Wang, Chen Li, Xupeng Mu, Kebang Hu
Biomedicine & Pharmacotherapy.2022; 155: 113714. CrossRef
A Study on Weight Control Behaviour, Eating Habits and Health-related Life Habits According to Obesity Degree of Teacher in Jeonbuk Province, Korea
Hye-Soon Chang
Journal of The Korean Society of Food Culture.2015; 30(1): 105. CrossRef
Analysis of Bone Mineral Density, Biochemical Index and Nutrient Intakes of 30-70 Years Old Women: Based on 2011 KNHANES
Jae Ok Koo, Myung Sook Kim
Korean Journal of Community Nutrition.2014; 19(4): 328. CrossRef

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Analysis of BMI, Body Composition, Weight Control, Dietary Behaviors of Adult Women: Jae Ok Koo, Seoyun Park; Korean J Community Nutr 2011;16(4):454-465. Published online August 31, 2011; DOI: https://doi.org/10.5720/kjcn.2011.16.4.454

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This study was carried out to investigate distribution of obesity, body composition, weight control and dietary behaviors, and to analyze the relationship between Body Mass Index (BMI) and physical characteristics, body composition and dietary behaviors by anthropmetric measurement and questionnaires. The 199 study subjects were divided into 3 age groups; 30's (78), 40's (77) and 50's (44) and 4 groups by BMI ; under weight (4.5%), normal (51.3%), over weight (26.1%) and obese (18.1%). Amount of skeletal muscle, body water, mineral and body fat were significantly increased with BMI. There were especially significant increase skeletal muscle 5.3 kg (19.1 --> 23.5 kg), body water 5.3 kg (26.3 --> 31.6 kg) and fat 15.2 kg (11.2 --> 26.4 kg) from under weight to obesity group, respectively (p < 0.01). There were significantly decreased in the ratio of body water (10.3%), protein (2.7%) and body mineral (1.1%) from under weight to obesity, but significant increase 14.1% in body fat (p < 0.001). About 44.4% of under weight group and 40.1% of normal group and 50% of over and obesity group had dissatisfaction on their body images. Most of the women were concerned about their body images and experienced weight control. Dietary behavior scores of obesity group were significant lower than the other four groups (p < 0.001). There were significant positive correlation between BMI and body water (r = 0.62), protein (r = 0.52), skeletal muscle (r = 0.63), body fat (r = 0.91) and WH ratio (r = 0.91), respectively (p < 0.001). The correlation between BMI and body fat and WH ratio were much higher than the correlation between weight and fat and WH ratio.

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Comparison of Health Behaviors and Nutrient Intake according to Work Type among Women Aged 30-60 Years: Using Data from the Korea National Health and Nutrition Survey (2015-2018)
Sol Lee, Bok-Mi Jung
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Negative emotion‐related eating behaviours in young women with underweight status, overweight status, anorexia nervosa, and bulimia nervosa in Korea
Zhen An, Kyung Hee Kim, Mirihae Kim, Youl‐Ri Kim
European Eating Disorders Review.2022; 30(4): 401. CrossRef
Influence of Different Exercise Types on Health-Related Quality-of-Life in Men With Depressive Disorder in South Korea
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Determinants of binge eating disorder among normal weight and overweight female college students in Korea
Youl-Ri Kim, Bo In Hwang, Gi Young Lee, Kyung Hee Kim, Mirihae Kim, Kwang Kee Kim, Janet Treasure
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Dietary Habits and Nutritional Status of Young Women according to Breakfast Frequency in Seoul
Da-Mee Kim, Youl-Ri Kim, Kyung-Hee Kim
Korean Journal of Community Nutrition.2018; 23(2): 102. CrossRef
Body Image Perception and Eating Behaviors among Male Middle and High School Students according to Weight Status in Seoul
Bo-Mi Kim, Kyung-Hee Kim
Journal of the East Asian Society of Dietary Life.2018; 28(2): 123. CrossRef
Effects of the difference between actual body condition and body image perception on nutrient intake, weight control and mental health in Korean adults: Based on the 5th Korea National Health and Nutrition Examination Survey
Jihyun Seo, Hyesun Ma, Sunghee Kim, Jiyoung Kim, Minseo Shin, Yoon Jung Yang
Journal of Nutrition and Health.2016; 49(3): 153. CrossRef
Health and nutritional status of Korean underweight women in their twenties: Based on the 2010~2012 Korea National Health and Nutrition Examination Survey
Sa Rang Jeong, Sunghee Kim, Yoon Jung Yang
Journal of Nutrition and Health.2016; 49(2): 99. CrossRef
A Study on Weight Control Behaviour, Eating Habits and Health-related Life Habits According to Obesity Degree of University Students in Jeonbuk
Hye-Soon Chang
Korean Journal of Human Ecology.2016; 25(1): 73. CrossRef
Associations between Weight Control Behavior and Health Behaviors in Korean Young Women: 2013 Community Health Survey
Jae-Hee Kim
Journal of the Korea Academia-Industrial cooperation Society.2015; 16(7): 4734. CrossRef
A Study on Weight Control Behaviour, Eating Habits and Health-related Life Habits According to Obesity Degree of Teacher in Jeonbuk Province, Korea
Hye-Soon Chang
Journal of The Korean Society of Food Culture.2015; 30(1): 105. CrossRef
Analysis of Weight Control Behaviors by Body Image Perception among Korean Women in Different Age Groups: Using the 2010 Korea National Health and Nutrition Examination Survey Data
Young-Suk Lim, Na-Ri Park, Su-Bin Jeon, So-Yeon Jeong, Zuunnast Tserendejid, Hae-Ryun Park
Korean Journal of Community Nutrition.2015; 20(2): 141. CrossRef
The Relationship between Obesity Degree and Psychological Factors, Dietary Behaviors and Health-Related Quality of Life in Adult Women in their Twenties in Seoul and Kyungin Area
Sang-Yeon Kim
The Korean Journal of Food And Nutrition.2013; 26(3): 535. CrossRef
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Jong-Sook Kwon, Kyungmin Kim, Hyun-Chang Seo, Yoonna Lee, Seunggeon Lim, Young-Sug Choi
Korean Journal of Community Nutrition.2013; 18(6): 611. CrossRef
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[English]
A Study on Weight Control Behaviour, Eating Habits and Health-related Life Habits according to Obesity Degree by Body Fat Percentage among Middle-aged Women in Gunsan City: Hye Soon Chang; Korean J Community Nutr 2010;15(2):227-239. Published online April 30, 2010

Abstract PDF: The purpose of this study was to compare weight control behaviour, eating habits and health-related life habits according to the obesity degree by body fat percentage (%Fat) among middle-aged women. The subjects were 170 middle-aged women who lived Gunsan City, and they were assigned to one of the following groups based on their %Fat; normal weight group (18% - < 28%), overweight group (28% - < 33%) and obesity group (over 33%). The height, body weight, %Fat, the circumference of waist and hip of them were measured. Eating habits and health-related life habits were evaluated based on questionnaires. The results were as follows. Their weight, %Fat, body mass index (BMI), relative body weight (RBW), waist, hip, and waist-hip ratio (WHR) were significantly higher in the obesity subjects when compared to the normal and overweight subjects. Self-perception for weight (p < 0.001), desire for weight control (p < 0.01), and reasons of weight control (p < 0.05) were different among three groups. The main skipped meal was breakfast (67.9%), reasons of skipping meals were different among three groups (p < 0.05), and main reasons were "lose one's appetite" and "have not enough time". Food habits score for each food was not significantly different among three groups, but eating the meal on thinking with food combination in normal group was higher than overweight and obesity group (p < 0.01). Correlation coefficients of food habits score and anthropometric measurements were that salty of food was negative and food habits scores were positive correlation for anthropometric measurements and obesity index (p < 0.05 - p < 0.001). Frequency of exercise and fitting exercise for body were different among three groups (p < 0.05). Obesity group was lower frequency of exercise than the other groups. Regular diet was positive correlation with food combination (p < 0.01), taking fish (p < 0.05), taking vegetables (p < 0.01), taking bean products (p < 0.01) and food habits score (p < 0.01), frequency of eating out and snacks were negative correlation with taking fruits and fishes. Therefore, proper nutritional education for middle-aged women in obesity group is recommended regular diet, good food habits and exercise. The middle-aged women must decrease the frequency of eating out, snack and the salty foods, and increase the fruits and vegetables. They must have healthy life styles for exercise, smoking, and drinking.

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Nutrient Intakes and Blood Lipids According to Obesity Degree by Body Fat Percentage among Middle-Aged Women in Gunsan City: Hye Soon Chang; Korean J Community Nutr 2010;15(1):15-26. Published online February 28, 2010

Abstract PDF: The purpose of this study was to compare nutrient intakes and blood lipids of middle-aged women according to the obesity index by %Fat. Subjects were assigned to one of the following groups based on percentage of body fat (%Fat): normal weight (18% ~ < 28%), overweight (28% ~ < 33%) and obesity (over 33%). Nutrient intakes were evaluated based on questionnaires of 24 hours recall method and blood lipids were analyzed by blood analyzer. The results were as follows. 1) Nutrient intakes were that carbohydrates and fat intakes in obesity group were higher than normal and overweight group but the difference was not significant, and protein intake rate was similar all groups. The intake rate of calcium was higher in normal group than obesity group (p < 0.05), and obesity group ingested under dietary reference intakes. The intake rate of iron was higher in obesity group than normal group (p < 0.05). 2) TG, TC, VLDL and TC/HDL in obesity group were higher than normal group (p < 0.001). The attack rate of coronary heart disease in obesity group is higher than normal group (p < 0.01), LDL, blood glucose and blood pressure in obesity group were higher than normal group (p < 0.01), and HDL was a little higher in normal group than obesity group, but the difference was not significant. 3) The correlation of anthropometric measurements, blood glucose, blood lipid, and blood pressure had significant results. Weight was associated positive level with blood glucose, blood lipid and blood pressure. Waist and WHR were associated positive level with blood glucose and blood lipid but weren't associated with blood pressure. BMI was associated positive level with blood glucose, blood lipid and blood pressure, %Fat was associated positive level with blood lipid and blood pressure, but wasn't associated with blood glucose. These results suggest that the decrease of waist on blood glucose control is better than decrease of % Fat and BMI, the decrease of %Fat and BMI on blood pressure control is better than decrease of waist, and the decrease of %Fat on blood lipid control is better than waist and BMI. The nutritional education for obesity treatment must perform to analyze the blood and assess the obesity degree by %Fat, waist and BMI before nutritional education, so the obesity treatment will be effectively.

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Effects of Body Composition and Nutrients Intake on the Calcaneal Broadband Ultrasound Attenuation in College Students: Eun Joo Jea, Kwang Eui Byoun, Jung Eun Youn, Byung Kook Lee, Hee Seon Kim; Korean J Community Nutr 2009;14(5):590-599. Published online October 31, 2009

Abstract PDF: The purpose of this study was to analyze the relationship of nutritional status measured by the body composition and dietary nutrients intakes with calcaneal broadband ultrasound attenuation in college students. Total of 886 (462 male and 424 female) students who received health examination in May 2007 participated in this research.Participants bone status was measured by a quantitative ultrasound method and t-score was calculated via WHO guideline. For body composition measurements, body fat, height and weight were measured and BMI was calculated. Dietary data were collected by a 24-hour recall method. Based on Asia-Pacific standard of WHO, BMI was divided into 3 groups; UW (BMI<18.5), NW + OW (18.5< or =BMI<25) and Obese group (25< or =BMI). Among male students, 2.4% belong to the UW group, 45.0% to the NW+OW group and 52.6% belong to the obese group, while 10.4% of female students belong to the UW group, 71.9% to the NW + OW group and 17.7% of female students belong to the Obese group. Differences among male and female students were statistically significant (p<0.001). Students with higher BMI showed significantly higher bone health status. Male students did not show any significant differences in nutrients intakes by BMI groups while female students showed the higher intakes of energy, protein, pyridoxin, phosphorus, iron and zinc among NW + OW group than other groups (p < 0.05). The qualitative and quantitative evaluation of diet by BMI groups did not show any significant differences in both male and female students. The result of the multiple regression analyses showed that the body fat and bone status was negatively related while energy intake was positively related with the bone status. These results revealed that bone health status was positively affected by BMI but not by body fat. In conclusion, among those who are at their twenties, the period when the bone density becomes maximized, body fat may negatively affect bone health unlike during other life cycle stages.

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Development of Contents and Textbooks for the Education to Reduce Elementary Students' Fat Intake: Yoo Kyeong Kim, Ju Young Kim, Myeong Hwa Cha, Kyoung Ae Lee, Sungsug Lee, Kyung Hea Lee; Korean J Community Nutr 2009;14(2):158-167. Published online April 30, 2009

Abstract PDF: This study was conducted to reduce children's fat intake and to establish healthy dietary lifestyles. To achieve these goals, we searched, collected, and analyzed the materials related to the fat education, based on which the research personnel-professors and graduate students in nutrition and child education and elementary school teachers- discussed to figure out major topics, objectives, and detailed contents and activities appropriate for fat intake reduction. We also organized an advisory committee composed of 15 professionals in related fields to discuss the adequacy and validity of the specific contents. Finally, we systematically organized the contents and developed children's textbooks and teacher's guidebooks. Considering the different cognitive development stages of junior and senior elementary students we developed two different textbooks for each of them which are easy to read and understand, fun to play with lots of activities, and designed to practice into daily life. The contents cover three major topics-the concept of lipid, lipid in food, lipid in life and are composed of 6 units in total. To help teachers understand and and to instruct, teacher's guidebooks contain an overview of the education, specific information and practical guidelines for each class. We developed these education materials with the aim of lowering children's fat consumption and eventually promoting their health welfare; hopefully we expect these materials would be useful for children's nutritional education in the field.

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Comparison of Maternal Fatty Acid Intake and Fatty Acid Composition of Serum Phospholipids Between Singleton and Twin Pregnancies: Seul Ki Kwon, Soo Jeoung Lim, Joong Sik Shin, Sung Hee Jang, Hong Seok Ahn; Korean J Community Nutr 2008;13(4):555-564. Published online August 31, 2008

Abstract PDF: Essential fatty acids are important essential nutrients during pregnancy. The objective of this study was to compare fatty acid composition of serum phospholipids and essential fatty acid intakes between Korean pregnant women with a single baby and Korean pregnant women with twins. A total of 116 pregnant women who had maintained their health without any symptoms of pregnancy complications participated in the study. The subjects consisted of 57 women of singleton pregnancy and 58 women of twin pregnancy at the 1st, 2nd, or 3rd trimester of pregnancy. A 24-hour dietary recall was administered to each subject to obtain dietary information. The mean ages of the singleton pregnancy group and the twin pregnancy group were 31.44 years and 32.27 years, respectively, and the mean height values were 161.86 cm and 160.64 cm, respectively. The mean daily energy intakes in the singleton pregnancy group were 1639.95 kcal, 1904.71 kcal, and 1882.82 kcal for the 1st, 2nd, and 3rd trimester group, respectively. The mean daily energy intakes in the twin pregnancy group were 1745.99 kcal, 2203.46 kcal, and 2092.26 kcal for the 1st, 2nd, and 3rd trimester group, respectively. There were no significant differences in the mean fatty acid intakes by the type of pregnancy (i.e., singleton vs. twins and the stage of pregnancy (i.e., 1st vs. 2nd vs. 3rd trimester). However, the mean total fatty acid intake of those at the 1st trimester among the singleton pregnancy group tended to be higher than that of those at the 1st trimester among the twin pregnancy group. Such a trend seemed to be retro-versed. That is, the mean total fatty acid intakes of the twin pregnancy group were higher compared to the singleton pregnancy group for the 2nd and 3rd trimester group. The LA and total n6 concentrations of serum phospholipids of the singleton pregnancy group were significantly higher as the gestational age increased (p < 0.05). The alpha-LNA(p < 0.05), EPA (p < 0.05), and total n3 (p < 0.001) concentrations of serum phospholipids of the twin pregnancy group were significantly lower as the gestational age increased. The alpha-LNAconcentrations of serum phospholipids in the singleton pregnancy group at the 3rd trimester were significantly higher than that in the twin pregnancy group at the same trimester (p < 0.05). The serum phospholipids levels of AA and DHA of the twin pregnancy group were generally higher compared to those of the singleton pregnancy group. Particularly the differences reached at the level of statistical significance for those at the 1st trimester (p < 0.01). It is concluded that the study findings imply that fatty acid metabolism may meaningfully differ by the type and stage of pregnancy. Future research needs to be conducted to more elucidate grounding etiology and possible roles of dietary fatty acid intake levels in relation to the study findings.

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A Study on Nutrient Intakes and Blood Lipids of Middle Aged Men Living in Jeonbuk Province by Percentage of Body Fat: Hye Soon Chang; Korean J Community Nutr 2008;13(3):334-345. Published online June 30, 2008

Abstract PDF: The purpose of this study was to compare nutrient intakes and blood lipids according to the obesity index of middle aged men. Subjects were assigned to one of the following groups based on percentage of body fat (%Fat),; normal weight (10-20% fat), overweight (20-25% fat) and obesity (over 25% fat). Nutrient intakes were evaluated based on questionnaires and 24 hour recall method and blood lipids were analyzed by blood analyzer. The results were as follows: 1) Nutrient intakes were that carbohydrate intake rate in obesity group was lower than normal group and lipids intake rate in obesity group was higher than normal group. The intake of riboflavin and folic acid were differ normal and obesity group (p < 0.05), and normal group ingested under recommended intake. 2) Total-cholesterol, LDLcholesterol and blood pressure in obesity group were higher than normal group but the differences were not significant. The attack rate of coronary heart disease and blood glucose in obesity group is higher than normal group (p < 0.05). 3) The correlation of anthropometric measurements, blood lipid, blood glucose and blood pressure had significant results. Soft lean mass was associated BMI (p < 0.01), TC (p < 0.05), HDL (p < 0.05), LDL (p < 0.05) and SBP (p < 0.05). TG was associated TC (p < 0.05), HDL (p < 0.01), VLDL (p < 0.001) and Risk (p < 0.01). TC was associated LDL (p < 0.01) and Risk (p < 0.01). Blood glucose was associated TC (p < 0.05), LDL (p < 0.05), SBP (p < 0.05) and DBP (p < 0.05). These results suggest that reduction of body weight for the attack risk of obesity group in coronary heart disease.

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[English]
Dietary Intake, Serum Lipids, Iron Index and Antioxidant Status by Percent Body Fat of Young Females: Hyun Sook Bae; Korean J Community Nutr 2008;13(3):323-333. Published online June 30, 2008

Abstract PDF: The aim of this study was to measure and compare nutrient intake, anthropometric measurements and serum indices by percent body fat as one of the index of obesity degree in female college students. Additionally we attempted to investigate percentile distribution of fat free mass index (FFMI) and fat mass index (FMI) for developing reference values for these two parameters. The subjects were 91 female college students who were classified to 4 groups according to the percentile of percent body fat (Group1: 25 th < percentile of percent body fat, Group 2: 25 th < or = percentile of percent body fat < 50 th, Group 3: 50 th < or = percentile of percent body fat < 75 th, Group 4: percentile of percent body fat > or = 75 th). The mean percent body fat and body mass index were 28.2%, 20.5 kg/m2 respectively. The mean energy intake was 1707 kcal(81% of KDRIs) and vitamin C, folate, Ca and Zn intake were 73.9%, 54.7%, 79.6%, 97.5% of KDRIs respectively. Most nutrient intake (energy, carbohydrate, cholesterol, fatty acid, Ca, Fe) of G4 was lower than that of G1, G2 and G3. Serum HDL-cholesterol concentration was significantly lower in G4 than G1, G2, G3 and it tended to increase as percent body fat decreased. LDL/HDL, AI of G4 were significantly the highest among the 4 groups and increased as percent body fat increased. The mean fat free mass index and fat mass index were 14.5 kg/m2, 6.0 kg/m2 respectively. The criteria of sarcopenic obesity which has been defined as under 25 th percentile of FFMI and below 75 th percentile of FMI were shown 12.8 kg/m2, 8.2 kg/m2 respectively in this study. In conclusion, we should continue to more systematically research on the studies of new obesity measurement which includes FFMI and FMI as one of the variables. And the public education for weight control that emphasizes both the understanding of body composition and the importance of nutrition balance is also required.

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[English]
Effects of Medical Nutrition Therapy on Dietary Quality, Plasma Fatty Acid Composition and Immune Parameters in Atopic Dermatitis Patients: Bang Shil Kim, Yun Young Kim, Jin Hee Park, Nack In Kim, Ryo Won Choue; Korean J Community Nutr 2008;13(1):80-90. Published online February 29, 2008

Abstract PDF: Atopic dermatitis (AD) is one of the major public health problem. It has been reported that the prevalence of AD in children and adults are 10-20% and 1-3%, respectively. Westernization of food habits, urbanization, and environmental pollution are contributing factors toward the recent rise in prevalence. Excessive dietary restriction leads to chronic malnutrition in atopic dermatitis patients. The purpose of this study was to investigate the effects of medical nutrition therapy (MNT) on quality of diet and blood immune parameters in atopic dermatitis patients. The 19 atopic dermatitis patients (7 men and 12 women) admitted to K University Medical Center were studied. During the 12 weeks of intervention, the subjects were given MNT by a dietitian for 30-45 minutes every other week. MNT was comprised with general dietary therapy, intake of balanced meals, emphasis on n-3 fatty acid contents in foods, and food allergies. Anthropometric and dietary assessment and blood analysis were taken at baseline and after 12 weeks of MNT. After 12 weeks of MNT, the subjects' dietary qualities, including dietary diversity score (DDS), meal balance score (MBS) and dietary variety score (DVS) were significantly increased (p < 0.05). According to significantly increased intake of EPA and DHA, dietary n-6/n-3 fatty acid ratio decreased to the recommended level for the atopic dermatitis patients (p < 0.05). These changes of dietary fatty acid consumption were reflected rythrocyte fatty acid composition. After 12 weeks of MNT, serum levels of IgE and IL-4 levels were significantly decreased, however, the levers of INF-gamma, WBC, lymphocyte and TLC were not changed. As a conclusion, the individualized MNT improved the quality of diet in atopic dermatitis patients thereby influenced RBC fatty acid composition and IgE and IL-4 levels.

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[English]
Physical Characteristics and Dietary Patterns of Strength Athletes; Bodybuilders, Weight Lifters: Seongsuk Cho, Hyunkeun Lee, Kyungwon Kim; Korean J Community Nutr 2007;12(6):864-872. Published online December 31, 2007

Abstract PDF: The purpose of this study was to provide a descriptive assessment of the nutritional habits of resistance trained males in relation to protein and carbohydrate intakes in comparison with the recommended values. Thirty-four male bodybuilders (27.0 +/- 2.1years, 173.5 +/- 5.0 cm, 8.3 +/- 0.61% body fat), twenty-four male weight lifters (20.9 +/- 2.1years, 171.8 +/- 6.9 cm, 7.6 +/- 0.98% body fat) and twenty-five male non-athletes (26.9 +/- 2.5years, 175.3 +/- 5.7 cm,, 8.5 +/- 0.95% body fat) participated in the study. Participants completed a comprehensive survey by twenty-four hour dietary recall methods. All diets were analyzed using the Computer Aided Nutritional (Pro) analyzer by a registered dietician. Body fat was measured using skin fold thickness. The average time spent in resistance training was 18.0 +/- 1.7 hrs/week for body builders and 14.6 +/- 8.7 hrs/week for weight lifters. Total daily calories were 2583.6 +/- 874.8 kcal (31.9 +/- 11.9 kcal/ kg) for bodybuilders, 3565.9 +/- 1281.8 kcal (42.7 +/- 15.0 kcal/kg) for weight lifters and 2016.0 +/- 955.3 kcal (28.1 +/- 13.9 kcal/kg) for non-athletes (p = 0.001). Percent of calories from carbohydrate, protein, and fat 64.2%, 27.1%, and 8.7% for bodybuilders, and 66.3%, 18.6%, and 15.1% for weight lifters. The mean protein intake was 1.9 +/- 1.2 g/ kg of BW for bodybuilders, 1.6 +/- 0.6 g/kg of BW for male weight lifters and 1.1 +/- 0.69 g/kg of BW for non-athletes. Although dietary calcium (78.7%) and riboflavin (86.3%) intakes for bodybuilders were below the RDA, dietary intakes of micronutrients were not deficient. More research needs to be conducted to determine the optimal amounts of protein, carbohydrates, fats, and micronutrients for the resistance trained athletes.

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[English]
Comparison of Health Status and Dietary Habits by Percent Body Fat (PBF) Change for Adult Women in the Weight Control Program by the Community Health Center: Hyun Kyung Moon, Hyun Jin Lee, Young Park; Korean J Community Nutr 2007;12(4):477-488. Published online August 31, 2007

Abstract PDF: Prevalence of an obese population has been increasing in Korea. Obesity is considered a major risk factor for chronic degenerative diseases. Specifically, prevalence of obesity is prominent for adult woman in Korea. In many weight control programs, weight change did not often show any beneficial effects for health. These facts discourage people in the program. Thus in this study, the anthropometry, blood pressure, serum biochemical indices and dietary habits were compared by percent body fat change for adult women to show the beneficial effects of the weight control program. Study subjects were 134. Measurements were done before and after the weight control program. Percent Body Fat (PBF) was measured by bioelectrical impedance analysis. Using PBF changes, subjects were grouped as I (more than 1% increase), M (+/- 1% change), and D (more than 1% decrease). Data were analyzed using SPSS 12.0 program. Among the 134 participants, 13 increased their weight and 100 decreased. For PBF, 19 increased and 59 decreased. Statistical significant differences were shown for anthropometric assessments before and after for all weight, fat mass, percent body fat, waist-hip ratio and body mass index. I had increases, and D shows decreases. But the difference of D is large than M. Systolic and diastolic blood pressures decreased in all groups (p < 0.05). Fasting blood glucose decreased in all groups but were statistically significant only in D. Also triglyceride decreased in D (p < 0.05). Thus health conditions showed desirable changes in I

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[English]
Trans Fatty Acids of Breast Milk Lipids of Korean Women from Week 1 to 6 Months of Postpartum: Kyeong A Kong, Hyeon Sook Lim; Korean J Community Nutr 2007;12(3):223-234. Published online June 30, 2007

Abstract PDF: This study was done to determine the trans fatty acid (tFA) composition of human milk from postpartum to sixth months after delivery, to investigate the tFA intake of lactating women, and to estimate the intakes of tFA by infants exclusively fed breast milk. A total of 27 lactating Korean women participated to this study voluntarily, gave their breast milk, and responded to an investigation of their diets. The lactating women consumed 2.3-2.8 g/d of tFAs over the period of the first, second, third, and sixth months postpartum, which was 3.4-4.9% of the total fat intake and 0.8%-1.2% of the total energy intake. The proportions of tFAs in the breast milk were 1.89% in colostrum, 1.78% in transitional milk, and 1.78-2.25 in mature milk of the first, second, third, and sixth months postpartum. The tFAs of the breast milk identified in this study were C16:1n9t, C18:1n9t, C18:2n6t12t, C18:2 n6t12c, C18:2n6c12t and C18:2n6t11t. Among them, C18:1n9t was predominant, which made up 59.26% of all tFAs in colostrum, 62.36% in transitional milk, and 64.42% in mature milk. The proportion of total tFA was unchanged with time, although some significant differences were noted for individual tFAs. The percentages of C18:2n6t12c and C18:2n6c12t decreased over the study period. Estimated tFA intake of the exclusively breast-fed infants was 0.18 g/d when fed colostrum, 0.29 g/d when fed transitional milk, and 0.53 g/d when fed mature milk until the sixth month of postpartum. Those were 0.5%, 0.8%, and 1.1% of the total energy intake. The results in this study indicate that lactating Korean women consume not a large quantity of tFAs, secrete breast milk not containing much tFA, and the estimated intake of tFAs by infants fed exclusively breast milk is not great.

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[English]
Amounts and Food Sources of Nutrients of Elementary School Lunch Menus by the Type of Foodservice and the Percent Energy from Fat: Hye Jeong Youn, Young Hee Han, Taisun Hyun; Korean J Community Nutr 2007;12(1):90-105. Published online February 28, 2007

Abstract PDF: This study was conducted to assess macro- and micronutrient compositions in school lunch menus based on the 'Dietary Guideline' for School Lunches. Ninety-five dieticians in elementary school in Chungbuk were asked to complete a questionnaire on characteristics of the school lunch program (such as type of foodservice, food production system), the information about dietitians (such as age, education, and job history), and the extent of the use of processed foods and frozen foods. They were asked to return the questionnaire with the menus including the name and the quantity of every food ingredient offered during a week. A total of 554 lunch menus provided for a week of June 2004 were analyzed. Average nutrient content per meal was as follows; 660 kcal, energy; 92.9 g, carbohydrate; 26.7 g, protein; 21.1 g, fat; 287 microgramRE, vitamin A; 0.5 mg, thiamin; 0.5 mg, riboflavin; 29.3 mg, vitamin C; 338.2 mg, calcium; 3.9 mg, iron; and 97 mg, cholesterol. Average percentages of energy from carbohydrate, protein and fat was 56.2%, 16.2%, and 29.0%, respectively. The mean nutrient content per meal was higher in rural-type than in urban-type schools. The weekly menu of 40% of the schools provided < 55% of energy from carbohydrate, and 39% of the schools offered lunch that provided > or =30% of energy from fat. The micronutrient content was generally high when the percent energy from fat was less than 25%. Our results showed that only 52.6% of the schools provided lunches with the energy composition as in the 'Dietary Guideline' of School Lunches. Whole Milk was the major contributor to fat, saturated fatty acid and cholesterol. We suggest that school foodservices start to provide low fat milk instead of whole milk to reduce fat, saturated fatty acid and cholesterol. If low fat milk is served instead of whole milk, percentage of energy from fat and saturated fat can be reduced from 29% to 25%, and from 10.2% to 9.1%, respectively, and cholesterol could be reduced from 97 mg to 79 mg. Efforts to meet 'Dietary Guideline' for School Lunches should be made, especially to reduce fat intake, while maintaining essential nutrient intake at sufficient levels for children.

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[English]
A Study on the Relationship between Time Spent on Lunch and Degree of Obesity,Eating Habits in Culinary College Male Students: Sookhee Kim; Korean J Community Nutr 2006;11(6):695-706. Published online December 31, 2006

Abstract PDF: This study was to investigate the relationship between time spent on lunch and degree of obesity, eating habits in culinary college male students. This survey was conducted using questionnaires for 106 male students in a Hongseung-located culinary college. Over 16 minutes of time spent on lunch group had significantly lower body weights, obesity degrees and body mass index (BMI) and tended to have lower body fat % than the other groups. It suggests that shorter time spent on lunch is related with lower body weight, obesity degree and BMI. Those who ate the meal prepared by mother had longer time spent on lunch. The shorter times spent on lunch group recognized their body shape was lean, the longer time spent on lunch group recognized the overweight or obesity significantly. The shorter time spent on lunch group tended to eat the cooked rice in the gug and recognized that they were not healthy. Those who had diseases in the past tended to have shorter time spent on lunch. The more they chewed cooked rice and then longer time spent on lunch they had, they recognized their eating speed was not significantly speedy. The shorter time spent on lunch they had, the fewer fruits and salty foods they ate significantly. This study suggests that more chewing time, slower eating speed and longer time spent on eatmg lunch is very related with lowering weight, BMI, body fat % and obesity degrees, so male college students should be educated to have correct eating habits.

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[English]
Effects of the Life Style and Self-Recognition of Health Conditions on the of Body Fat % in Hotel Culinary College Students: Sookhee Kim, Kyunghee Joung, Yoonjung Kim; Korean J Community Nutr 2005;10(6):825-834. Published online December 31, 2005

Abstract PDF: This study was to investigate the effects of the body fat % on life styles and self-recognition of health conditions in hotel culinary college students. This survey was conducted using the questionnaires for 144 students (110 males, 34 female) in Hongseung-located college. More exercise time and less frequency of alcoholic beverage they intake, lowered their body fat %. Males did stronger exercise and had lower body fat % than females. The stronger exercise they did, the lower body fat % they had, and were more satisfied with their present weight. Since they had more alcoholic beverage, they smoked more. Less smoking, more abdominal obesity they were. The less satisfaction with their body weights, the higher body fat % they had. The obese less were content with their weights. More recognition of obese shape, higher body fat % they had and abdominal obesity they were. Female had higher body fat % and were more abdominal obesity, did weak action, less smoke and weak exercise than male. Higher body fat % they had, more abdominal obesity they were. The more part time jobs they had, they did not smoke or were not satisfied with their body weights. Female students in culinary arts division had higher body fat % and were dissatisfied with their body weights and did less exercise or subnormal exercises.

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