• Journal of the Korean Society of Food Culture
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• v.21 no.6
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• pp.596-605
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• 2006

This study was conducted to investigate factors affecting gone density of university students in Seoul area. Data for food habits, exercise and health-related behaviors were obtained by self administered questionnaires. BQI(bone quality index) of the subjects was measured by an Quantitative Ultrasound(QUS). The results are summarized as follows: The average hight, weight BMI and osteopenia percentage of the male and female student were 173.3cm, 68.6kg, 22.7 and 24.2%; 161.4cm, 54.4kg, 20.9 and 55.5%, respectively. The BQI and Z-score of the subjects were 99.6, -0.3 in male student group, and 82.7, -1.1 in female student group, respectively. Height, weight, fat weight, fat mass and BMI were positively related with BQI in female group. BQI was positively affected by breakfast and frequence exercise in male student group. In female student group, frequency exercise was positively related with BQI. The result of this study revealed that the desirable food habits, dietary behaviors and health-related lifestyles may have a beneficial effect on bone density. They should have practically and systematically organized nutritional education on optimum body weight, good eating habits, weight bearing exercise for higher bone density level.

• Korean Journal of Community Nutrition
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• v.15 no.2
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• pp.169-179
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• 2010

Good snack consumption behaviors are important among elementary students because snack provides additional energy and nutrients and because good dietary behaviors should be formed during early stages of life. This study investigated, among elementary school students, 1) snack consumption behaviors, 2) snack-related nutrition knowledge level, and 3) relationships between snack behaviors and snack-related nutrition knowledge. A convenience sample (N = 372), drawn from 5th and 6th graders of an elementary schools in Siheung-si, Gyeonggi-do, completed a pre-tested questionnaire. More than 85% of the participants snacked more than once per week. Most (77%) had their snacks at home. Fruit and fruit juice were the most frequently consumed and the most liked snack items. Taste was the most important in choosing a snack item closely followed by health/nutrition. Snack-related knowledge level was relatively high and the participants obtained their nutrition knowledge through mass media (30.4%) and family/friends (29.0%). Snack-related nutrition knowledge level and snack consumption behaviors showed positive relationships in various areas such as choosing more nutritious snack items and checking nutrition labels. Although this study was limited by its cross-sectional study design, these positive relationships suggest that better nutrition knowledge could result in better behaviors. Results of this study indicated that factual nutritional knowledge has been well transmitted to students. Therefore, future nutrition education on snacking could focus more on providing problem-solving and operational knowledge.

• Journal of the Korean Society of Food Science and Nutrition
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• v.30 no.1
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• pp.168-174
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• 2001

This study was conducted to investigate correlation between soybean and their products consumption and risk factors for atherosclerosis in the healthyKorean adults. Health behaviors such as smoking, exercise, alcohol consumption and dietary patterns and nutrient intakes of 193 healthy adult subjects aged from 26 to 69 were assessed by using interview and semiquantitative food frequency questionnaire. The BMI, blood pressure and biochemical parameters of blood were examined as well as preferences for taste and family history of disease. Data were expressed as quartile according to soybean and their products consumption. The average daily soybean and their product consumption for 1st, 2nd, 3rd, and 4th percentile group were 36, 78, 112, and 182g, respectively. The more consumption of soybean and their products, the more intake of energy, protein, lipid, fiber, Ca, cholesterol as well as frequency of exercise, smoking and drinking. Serum TG, total cholesterol and LDL-cholesterol and AI as risk factors of atherosclerosis were positively correlated with smoking and drinking (p<0.05). Especially, serum TG was positively correlated with hypertension and BMI (p<0.01). But, no correlation between exercise, salty taste, meat preference, soybean products consumption and atherosclerosis risk factors was found, which means that life styles such as smoking and drinking rather than dietary habits might influence atherosclerosis in healthy adults. In conclusion, present soy products consumption should be increased by way of developing new generation soy products in order to exert anti-atherosclerotic effect by soybean in human.

• Korean Journal of Community Nutrition
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• v.17 no.2
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• pp.133-145
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• 2012

The purpose of the study was to examine the adolescents' awareness and practice of Dietary Action Guide for Adolescence, which was developed by the Ministry of Health & Welfare. Subjects were middle and high school students, selected one class each from all of the 16 provinces in Korea, which were 32 schools and 998 students all together. The subjects were asked to self-evaluate the degree of awareness and practice of Dietary Action Guide using the 5 point-Likert scale from July to September, 2010. On average, 55.1% of the students responded that they were aware of the Dietary Action Guide and 49.4% answered that they put Guidelines into practice. The average score of awareness and practice were $3.54{\pm}0.24$ and $3.42{\pm}0.33$, respectively. The awareness score was higher than those of practice score in all the questions in the 6 categories. Awareness score of female students was higher than those of male students but there was no difference by residence area. Awareness and practice of the nutrition education-experienced were higher than those of the inexperienced. Practice score was higher among middle school-students compared to high school students, which reflected the opportunity of taking nutrition related classes. This finding shows that nutrition education for adolescents is important to change their dietary behaviors regardless of gender, residence area and school level.

• Journal of the East Asian Society of Dietary Life
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• v.25 no.4
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• pp.710-719
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• 2015

This study was undertaken to identify factors affecting school food waste generation using a questionnaire. The subjects were 254 high school students (male; 156, female; 98) in Sacheon, Gyeongnam divided into three groups of low (${\leq}1/week$), moderate (2~3/week), and high (${\geq}4/week$) according to the frequencies of food waste. The questionnaires consisted of general characteristics, anthropometric values, dietary habits, health-related behaviors, self-perceptions of food waste, snacking patterns, and nutrition knowledge. The main reasons behind food waste were 'too much food' in the low (20.9%) and moderate (32.2%) groups, and 'no appetite' in the high group (p<0.01). The main types of food waste were rice (44.2%) > fish (18.6%) > vegetables (14.0%) in the low group, rice (54.2%) > Kimchi/vegetables (15.3%) in the moderate group, rice (56.0%) > vegetables (20.0%) > Kimchi (16.0%) in the high group (p<0.01). School food waste was significantly affected by age, gender, monthly allowance, school grade, weight, BMI, regularity of meals, time of meals, type of breakfast, starting age of smoking, and cost for snacking.

• The Korean Journal of Food And Nutrition
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• v.27 no.3
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• pp.495-506
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• 2014

This study was conducted to measure the effect of a community-based nutritional intervention program on dietary behaviors and nutrient intakes of low-income elderly women in Korea. The subject of the study was a group of 88 elderly women using the free meal service in Dong-gu, Gwangju city in Korea. The study was carried out from April to July 2009, and the pretest, application of nutrition education, and post-test were applied in each stage. This community-based nutrition intervention program consisted of snack supplement and nutrition education provided three times a week and 36 times in total. The nutrition education was led by the nutritionists and professionals using various educational media. Snack supplement included were milk, soymilk, carrot juice, bread, yogurt, and bananas. The result of pretest showed that the nutrient intakes of the subjects were much below the Recommended Nutrient Intake (RNI) level of Dietary Reference Intake for Koreans. Comparison of the dietary behavior score and nutrient intakes before and after the nutritional intervention program indicated that the food behavior score increased from 3.1 to 5.6 (P<0.001) and intake of energy, protein, carbohydrate, thiamin, niacin, vitamin C, iron, and potassium of the subjects all increased significantly (P<0.05). Mean Adequacy Ratio (MAR) of their nutrient intakes was also improved from 0.53 to 0.64 (P<0.01). These results indicated that the nutrition intervention program conducted in this study was effective in improving dietary behavior and nutrient intakes of elderly women in local community.

• Journal of the East Asian Society of Dietary Life
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• v.25 no.1
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• pp.39-48
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• 2015

This study aimed to compare and evaluate nutritive conditions of the female elderly (2,893 people) based on a national health nutrition survey and health-related factors influencing nutritional intake. The results are as follows.- Average age of all subjects was $72.12{\pm}5.2$ old. BMI ($24.48{\pm}3.3kg/m^2$) and waist size ($83.9{\pm}9.5cm$) of urban elderly was larger ($23.74{\pm}3.3kg/m^2$, $82.28{\pm}9.9cm$) than that of rural elderly. MAR[4] and MAR[10] were also higher in urban elderly than rural elderly. The results of multiple regression analysis showed that factors influencing poor nutrition of elderly subjects were increasing age, smoking, and self-rated health. Old-old and current smokers were associated with a higher likelihood of poor nutrition (OR 1.82, 95%CI 1.43~2.30) and (OR 3.40, 95%CI 2.17~5.33) elderly female subjects in urban areas. Smoking (OR 2.29, 95%CI 1.33~3.95), poor self-rated health (OR 1.55, 95%CI 1.11~2.16), over nine hours of sleep per nighting (OR 1.72, 95%CI 1.17~2.53) and stress (OR 1.46, 95%CI 1.10~1.92) of elderly female subjects in rural areas were associated with higher likelihood of a poor nutrition. In conclusion, rural elderly are more influenced by poor health practice behaviors (self-rated health, sleeping stress) and psychological factors. Nutrition status of the rural elderly is worse than that of the urban elderly. To reduce nutritional risk of Korean elderly, especially rural elderly, active nutrition arbitration should include psychological environmental factors.

• Nutrition Research and Practice
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• v.11 no.3
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• pp.247-256
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• 2017

BACKGROUND/OBJECTIVES: Easy access to intervention and support for certain behaviors is important for obesity prevention and management. The available technology such as smartphone applications can be used for intervention regarding healthy food choices for obesity prevention and management in elementary-school students. The transtheoretical model (TTM) is comprised of stages and processes of change and can be adopted to tailored education for behavioral change. This study aims to develop TTM-based nutrition contents for mobile applications intended to change eating behaviors related to weight gain in young children. SUBJECTS/METHODS: A synthesized algorithm for tailored nutrition messages was developed according to the intake status of six food groups (vegetables, fruits, sugar-sweetened beverages, fast food and instant food, snacks, and late-night snacks), decision to make dietary behavioral changes, and self-confidence in dietary behavioral changes. The messages in this study were developed from December 2014 to April 2015. After the validity evaluation of the contents through expert consultation, tailored nutrition information messages and educational contents were developed based on the TTM. RESULTS: Based on the TTM, stages of subjects are determined by their current intake status, decision to make dietary behavioral changes, and self-confidence in dietary behavioral changes. Three versions of tailored nutrition messages at each TTM stage were developed so as to not send the same messages for three weeks at most, and visual materials such as figures and tables were developed to provide additional nutritional information. Finally, 3,276 tailored nutrition messages and 60 nutrition contents for applications were developed. CONCLUSIONS: Smartphone applications may be an innovative medium to deliver interventions for eating behavior changes directly to individuals with favorable cost-effectiveness. In addition, using the TTM for tailored nutrition education for healthy eating is an effective approach.

• Journal of the Korean Home Economics Association
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• v.36 no.7
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• pp.25-38
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• 1998

This research was carried out to investigate the health condition, eating behavior and nutritional status of female high school students. The survey was conducted from July 5 to July 18, 1996 with 524 first grade students(15 to 17 years old) of H girl's high school using the questionnaire method. The levels of depression and anxiety were measured by CED-S and Spielburger's STAI-S, respectively. In addition, nutrient intakes were estimated by Convenience Method. The results of this study are as follows: 1. The mean depression and anxiety scores of the subjects were 22.23 and 26.00, respectively. The proportion of subjects with normal weight(BM) was 72.1%. The perceived health condition of subjects was moderate and 15.1% of subjects were anemic. The subjectiv health symptoms were feeling drowsy, tired eyesight, getting tired easily, catching cold frequently and frequent headache. 2. The irregularity of breakfast was high in the subjects. The problems of the eating behavior were irregular meals, unbalanced diets, excessive meals, skipping meals and food prejudice. Forty-nine percent of subjects had good eating behaviors. 3. The mean energy intake of subjects was 1717Kcal. The proportion of energy derived from carbohydrates, proteins and fats were 62.70%, 13.89% and 23.42%, respectively. The subjects consumed 59.59g of protein, 13.07mg iron, 637.49mg calcium, 553.64 R.E. vitamin A, 0.94mg vitamin B1, 1.08mg vitamin B2, 15.15mg niacin and 49.59mg vitamin C, respectively. Except niacin, other nutrient intakes were less than the Korean recommended dietary allowances(RDA), especially, iron. 4. Mother's occupation, subject's pocket money and perceived health condition were negatively correlated with eating behavior, And the depression and anxiety of subjects showed wrong eating behaviors. The effects of socioeconomic variables, depression, anxiety and perceived health condition on the nutrient intake were different depending on the kind of nutrient. The nutrient intakes differed significantly among the group of different eating behavior. The eating behavior was significantly correlated with the nutrient intake.

• Child Health Nursing Research
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• v.23 no.2
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• pp.249-257
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• 2017

Purpose: The aim of this study was to assess the body weight perception of adolescents and to investigate the difference between mental health and weight control behavior according to body weight perception. Methods: Study data on 12-18 years old adolescents with normal BMI was obtained from the 6th Korea National Health and Nutrition Examination Survey (2013-2015). Rao-Scott Chi-square test and ANOVA were used for the analysis. Results: The percentage of adolescents with a misperception of body weight was 43.3%, and their subjective health status (p=.013), stress perception (p=.001), and depression (p=.001) were worse than for adolescents who had the correct perception of their body weight. The percentage of adolescents who were trying to lose weight while perceiving their body weight as normal was 36.9%. Body weight control behavior had significant differences according to dietary intake (frequency of eating dinner (p=.015)), energy intake (p=.004), and carbohydrate intake (p<.001), but there was no significant difference according to exercise. Conclusion: Parents, school teachers, and nurses should make efforts to ensure that Korean adolescents perceive their body weight correctly, and prevent unhealthy weight control behaviors.