• Journal of Nutrition and Health
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• v.35 no.1
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• pp.115-123
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• 2002

This study was carried out to investigate the utilization status of internet dietary information by gender(boys: 363, girls: 366) in adolescent(middle & high school students). The results were summarized as follows. The internet using frequency of 6-7times per week had 45.0% of subjects and the using time of internet per a time was shown mainly'<2hours(68.5%)'. The main place for internet use was home(79.0%) and favorite search engine was 'Yahoo'(45.7%) and 'Daum'(19.3%). As main purpose using internet were mentioned 'social intercourse'(45.0%) and data search'(24.8%). The organization that offer to reliable internet information was educational institution'(49.4%). The problems in using information site were 'poor information'(26.4%), 'slow connection speed'(22.6%), and 'don't arouse interest'(18.8%). The search experience about dietary information had only 27.9% of subjects and search purpose was 'for homework'(33.3%) and 'for health'(32.0). The satisfaction degree of dietary information was not high. The connection motive to dietary information was mainly 'by site navigation casualty'(55.7%). Only 7.7% of subjects had experience of nutrition counseling using internet, and the motive of nutrition counseling was also 'by site navigation causally'(55.8%). The purpose of counseling was 'for diet'(41.5%) and 'for health problem'(30.2%), and the satisfaction degree of counseling result was very low. As the ask of improvement for counseling site were pointed out 'poor in answer content'(44.8%) and 'lazy answer'(31.0%). The subjects wanted to get the dietary information about 'growth in status'(41.4%), 'diet related skin beauty'(14.6%), the update period less 1 month, and the way of 'free board'(32.3%), 'game'(21.1%) and 'animation'(19.3%) as offer tool. The results of this study showed that although the internet using percent and frequency of subjects was high, they used dietary information very seldom and they are dissatisfied with internet nutritional information. Therefore, the information donor should consider which dietary information was needed and what is the optimal tool for adolescent.

• Proceedings of the KSCN Conference
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• 2000.11a
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• pp.57-57
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• 2000

• Proceedings of the KSCN Conference
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• 1999.05a
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• pp.111-111
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• 1999

• Proceedings of the KSCN Conference
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• 2005.04a
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• pp.157-157
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• 2005

• Journal of the Korean Society of Food Culture
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• v.13 no.4
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• pp.383-391
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• 1998

This study was conducted to find the effect of in-class nutrition education and exercise program for obese adolescent boys in Taegu with the nutrition knowledge test before and after education program and anthropometric measurement. The subjects were consisted of a normal group (NG; n= 13) and an obese group (n=30). The obese group is divided into two groups; obese group A (OG-A; n=12), participated in a ten-week nutrition education only; and obese group B (OG-B; n=28), participated in a ten-week nutrition education and exercise program. The anthropometric data of the three groups were increased after the nutrition education program. However the obesity index(BMI, R hrer, WHR, Skinfold thickness) of OG-B were significantly decreased after the programs. The nutrition intake data were also changed after the nutrition education program. Especially the intake of carbohydrate was significantly decreased in OG-B from $421.5{\pm}155.9g$ to $349.0{\pm}41.0g$ (p<0.05) after the nutrition education program. It was noted that the intake of Ca was significantly decreased in all three groups after the nutrition education program. The mean score of the nutrition knowledge test also significantly increased from $13.7{\pm}3.1$ to $17.8{\pm}3.0$ after the nutrition education program. The result strongly suggested that nutrition education program should be successful if the obese adolescents and their parents especially mothers participated in the same class. In summary, nutrition education and exercise programs were effective on reducing obesity of obese adolescents. Nutrition knowledge of obese adolescent was significantly increased after nutrition education program.

• Journal of Nutrition and Health
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• v.37 no.5
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• pp.394-405
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• 2004

The objective of this study is to develop a nutrition policy on food and nutrition labeling and education systems for fast food and carbonated soft drinks in Korea by identifying the fast food and soft drink use and by examining nutrition policies and labeling in Korea and other countries. Fast food is defined as food dispensed quickly at a restaurant generally offering a limited menu of inexpensive items, which may be mostly not nutritious. It is a growing component of the Korean diet, especially on children and adolescent population. Low nutrient dense beverages such as carbonated drinks are also increasing in the children and adolescent's diet in Korea and concern has been raised that these beverages may replace more nutritious beverage and provide empty calories. According to 2001 Korean national health and nutrition survey, fast food and carbonated soft drinks were most popular among 13 - 19 years old adolescents. Thirty six and 72 percent of adolescents consumed hamburger and carbonated beverage equal to or more than once a week, respectively. In United States, all processed food including soft drinks should disclose full nutrition information by nutrition labeling requirement.. Restaurant foods are not required to provide nutrition information currently, but legislation on mandatory nutrition labeling of fast foods with other restaurant foods has been proposed currently in US. The sales of foods of minimal nutritional value, such as soft drinks, in the nation's schools is regulated by the United States Department of Agriculture. Nutrition information about fast food in US has been provided by fast food companies, non-profit organizations, hospitals and government through internet, booklet and brochure, etc, but the information is available from only a few resources in Korea. This study suggests a nutrition policy on fast food and soft drink use which includes establishing mandatory nutrition labeling and developing nutrition education materials and programs by web-site, booklet and government and school programs in Korea.

• Korean Journal of Community Nutrition
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• v.7 no.1
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• pp.14-22
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• 2002

Adolescent smoking has been a great concern with respect to it’s causing more serious health problems than adult smoking. The smoking status and habits of middle school students were studied using anonymous questionnaires, and their dietary habits were compared. Ninety-two of 4l4 students (22.2%) had experienced smoking, and 62.0% of them began in primary school, mostly out of curiosity. The most plausible reasons for smoking were ‘boredom’ and/or ‘stress reduction’. Dietary habits were generally inadequate in the smoking group. Compared with the non-smoking group, the smoking group paid less attention to a balanced diet, more skipped breakfasts, more had irregular meal times and fewer snacked. There was no significant difference between the smoking and non-smoking groups in food intake frequency, except of sweet foods and caffeinated foods, which were more frequent consumed by the smoking group. These results suggest that more attention needs to be paid to nutrition and health education programs in elementary schools and also that proper support programs for smoking by themselves.

• Journal of Nutrition and Health
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• v.37 no.6
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• pp.479-492
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• 2004

The objectives of this study were to investigate 1) the foods intake as well as nutrients intake, 2) the nutritional knowledge, and 3) the relations between the foods and nutrients intakes and nutritional knowledge in adolescent rhythmic gymnasts (RGs). The results are summarized as follows. Average daily intakes of energy, calcium, iron, vitamin A, vitamin B$_1$ vitamin B$_2$ and niacin were in 45-74％ of the RDAs for Koreans. Average daily energy intake was only about 50％ of energy expenditure by physical activities. Average daily intakes of each food group were generally lower, but intakes of breads and confectionaries, sugar and sweets, milks and dairy products, and instant foods were higher in the RGs compared to the nonathletic students of the same age from the National Health and Nutrition Suvey. The contribution of empty-calorie foods such as breads and confectionaries, beverage and instant foods to the major energy nutrients were high. Mean of total nutritional knowledge score of RGs was 28.4 of total score 50. In categorical score of nutritional knowledge, the RGs make a best score on food sources and they get the lowest marks for food exchange. Among the nutrients, intakes of crude fiber, animal Fe, Na, K, vitamin A, carotene, vitamin B$_1$ niacin and vitamin C and, among the food groups, intakes of mushrooms, fruits and meats had relations with one of the total or categorical nutritional knowledge scores in the RGs. In conclusion, nutritional status of adolescent RGs was poor due to their unbalanced diet composed of empty-calorie foods, and their undesirable food intake pattern was supposed to be related to the low nutritional knowledge score of them. These results indicate that the RGs should be given more nutritional knowledge to improve their nutritional status and the exercise performance.

• Korean Journal of Community Nutrition
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• v.3 no.3
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• pp.349-357
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• 1998

This study was done to investigate the effect of adolescent smoking on dietary intakes and nutritional status of serum lipids and antioxidant vitamins. Subjects were 82 somkers whose average pack-year was 0.73, and 85 nonsmokers of male technical high school students in Seoul. Anthropometric measurement was performed and % body fat was also analyzed by Bioelectrical Impedance Fatness Analyzer(GIF-891). Dietary intakes and habits were examined through questionnaires and nutrient intakes were analyzed by Computer Aided Nutritional (CAN) analysis programs. Serum TG and total cholesterol levels were measured by Spotchem sp-4410 and serum HDL-cholesterol levels were measured by test kit. serum vitamin C level was measured by 2,4-dinitrophenylhydrazine method and serum levels of vitamin A and vitamin E were measured by HPLC. All data were statistically analyzed by SAS PC package program. There was a significant difference in body fat percentage and systolic blood pressure while other anthropometric measurements were not different between smokers and monsmokers. Caloric intakes(2335㎉) in adolescent smokers tended to be higher than that of nonsmokers (2,175㎉) but the difference was not statistically significant. Intakes of protein(76.67g) and niacin(16.49㎎) in adolescent male smokers were significantly higher(P<0.05) than those of nonsmokers although other nutrient intakes were not significantly different. Analysis of serum lipids showed that serum HDL-cholesterol level of smokers was significantly different. Analysis of serum lipids showed that serum HDL-cholesterol level of smokers was significantly lower(p<0.05) than that of nonsmokers, whereas other lipid levels were not significantly different. Serum vitamin C level was also significantly lower(p<0.05) in adolescent smokers than in nonsmokers. In addition, serum vitamin E level, which was 7.85㎎/1 in smokers, was lower than that of 9.20㎎/1 in nonsmokers(p<0.05) while serum vitamin A level was not significantly different between the two groups. These results indicate that cigarette smoking in adolescence decreases serum levels of HDL-cholesterol, vitamin C and vitamin E even thoughth their smoking history is very short. (Korean J Community Nutrition 3(3) : 349∼357, 1998)

• Korean Journal of Community Nutrition
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• v.28 no.5
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• pp.363-375
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• 2023

Objectives: The objective of this study was to identify factors associated with adolescent obesity, as well as any new factors that correlated with a change in the rate of obesity over time. Methods: The study used 5-yearly data collected by the Korea Youth Risk Behavior Survey starting from the year 2006 up until 2021 (data from 2nd, 7th, 11th, and 17th surveys were analyzed). Factors such as demographics, dietary factors, health behavioral factors, and mental health factors were studied. All data were analyzed using IBM SPSS 27.0, employing chi-square tests and multiple logistic regression analysis. Results: This study included data from a total of 255,200 participants. Factors contributing to obesity varied with time. Over the survey duration of 15 years, low academic achievement, parents with low levels of education, low frequency of fruit consumption, low frequency of fast food intake, long periods of being seated, and high levels of stress were significantly associated with a high rate of obesity. Factors that showed a new correlation with an increase in obesity rates included living with single parents, low frequency of muscle strengthening exercises, and experiencing intense sadness and despair in the past year. Factors that were correlated with a change in obesity rates over time included household economic status, frequency of carbonated beverage consumption, frequency of intense physical activity, and frequency of alcohol consumption. Breakfast intake and smoking were not significantly associated with obesity rates in the 15-year period. Conclusions: While several factors associated with obesity remained consistent over time, several new factors have emerged in response to social, economic, and environmental changes contributed to a change in obesity rate over time. Therefore, to prevent and manage adolescent obesity, continuous research into the new emergent factors contributing to obesity is needed.