• Korean Journal of Community Nutrition
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• v.18 no.3
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• pp.257-268
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• 2013

The purpose of this study was to evaluate nutrient intake and meal variety with breakfast eating in Korean adolescents using data from the 2008-2009 National Health and Nutrition Examination Survey. The analysis included 1245 adolescents aged 12 to 18 years. The subjects were divided into two groups according to breakfast skipping (BS: breakfast skipping, n = 235, BE: breakfast eating, n = 1110). The BS group was significantly higher in its frequency of eating soda drinks, instant noodle, and ice cream than the BE group. The BS group consumed significantly lower quantities of plant calcium and plant protein per 1,000 kcal compared to the BE group. Also the intake of cereal and vegetables in the BS group was significantly lower than those in the BE group, however, the intake of beverage in the BS group was significantly higher than that in the BE group. The average number of foods of the BE and BS groups were 29.50 and 25.85, respectively and revealed a statistical significance (p < 0.0001). The snack intake and % energy from snack intake of the BS group were significantly higher than those of the BE group. Also, the fasting blood glucose concentrations were significantly higher in the BS group compared to the BE group. In conclusion, adolescents who skip breakfast may have lower meal variety and higher blood glucose concentrations. Therefore, in support of proper dietary management, it is necessary to promote and encourage breakfast eating.

• The Korean Journal of Food And Nutrition
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• v.30 no.1
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• pp.74-82
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• 2017

This study was conducted to evaluate the risk of overweight and obesity in adolescents consuming snacks frequently from 2007~2009, Korean National Health and Nutrition Examination Survey (KNHANES). The subjects (12~14 years: n=523; 15~18 years: n=614) were presented with food frequency questionnaires, and they were classified according to their gender and frequency of snack consumption. In the age group of 12~14 years, boys and girls (boys OR: 1.11, 95% CI: 0.52~2.39, girls OR: 12.45, 95% CI: 2.26~68.51) who consumed yogurt frequently had a higher risk of overweight and obesity at the highest quartile frequency compared with the lowest quartile after adjustments for multiple confounding factors, including age, physical activity, frequency of eating out and snack consumption, and energy intake. In the age group of 15~18 years, girls (OR: 1.01, 95% CI: 0.34~2.99) consuming fried foods had a higher risk of overweight and obesity at the highest quartile frequency compared with the lowest quartile after adjustments for multiple confounding factors, including age, physical activity, frequency of eating out and snack consumption, and energy intake. Thus, we conclude that frequent consumption of yogurt and fried foods increases the risk of overweight and obesity in adolescents. These findings suggest that the risk of overweight and obesity is associated with the frequency of snack consumption.

• Korean Journal of Community Nutrition
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• v.17 no.4
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• pp.419-428
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• 2012

The purpose of this study was to evaluate nutrient intake and anthropometric parameters related to obesity in Korean female adolescents according to dietary diversity score. We analyzed data from the combined 2007-2009 Korean National Health and Nutrition Examination Survey (KNHANES). The subjects were 770 female adolescents. Nutrient intakes, Dietary Diversity Score (DDS) ) and Dietary Variety Score (DVS) were derived by using the data from the 24-recall method. The DDS was defined as the number of six food groups (cereals, meats, fruits, vegetables, dairy, fats and oils) consumed. The DVS was defined as the number of food items consumed. The average age of the subjects of the study was 15.02 years and the average height, weight, and BMI were 159.50 cm, 52.58 kg, 20.62 kg/$m^2$, respectively. The energy and nutrients intakes, percent of the recommended intake for nutrients in DDS = 5~6 group were significantly higher than those of the other groups. Calcium and vitamin C INQ in DDS = 5~6 group were significantly higher than those of the other groups. The average DVS of the subjects was 29.33. The most frequent style of food pattern was CMDFVO (cereals, meats, dairy, fruits, vegetables, fats and oils) = 111011. In conclusion, in healthy Korean female adolescents, food diversity intake variety did beneficially affect the intakes of calcium and vitamin C. Further studies are needed to confirm these findings.

• Korean Journal of Community Nutrition
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• v.19 no.2
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• pp.133-141
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• 2014

Objectives: The purpose of this study was to estimate the prevalence of metabolic syndrome (MS), metabolic abnormalities, and nutrient intakes in Korea children and adolescents using the Korea National Health and Nutrition Examination Survey from 2008. Methods: A sample of 838 children and adolescent males (n=442) and females (n=396) aged 10-18 was used from the 2008 Korea National Health and Nutrition Examination survey. The diagnosis of the metabolic syndrome subjects was adapted from modified National Cholesterol Education Program-Adult Treatment Panel III by Ford. To compare nutrient intakes, we used a judgment sampling. The first group was composed of all children and adolescents (n=46) with MS. The second one along with the first group had children and adolescents with the same age, sex, and body mass index (BMI) but without MS (n=46). The control group like the first two had children and adolescents with same sex and same age but with normal BMI and without MS (n=46). Results: In this randomized controlled controlled trial, the prevalence of the metabolic syndrome was 5.8%. The risk factors was associated with the MS were abdominal obesity 9.4%, hypertriglyceridemia 25.0%, low HDL-cholesterol 10.3%, hypertension 23.4%, and hyperglycemia 7.1%. Among metabolic abnormalities, blood pressure was significantly affected by sex, age and obesity. On the other hand, HDL-cholesterol, triglycerides, and waist circumference were directly linked to obesity. There were no significant differences in nutrient intakes among the three groups. Conclusions: The prevalence of MS was higher in children (10-11 years old) than in adolescents (12-18 years old). There was a difference in hypertension among risk factors by gender, and there were no significant differences in nutrient intakes.

• Journal of Nutrition and Health
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• v.38 no.6
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• pp.465-474
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• 2005

The purpose of this study was to investigate the dietary habits, nutritional status, and serum copper and zinc concentrations of adolescent athletes. 50 high school adolescent athletes (29 male, 21 female) took part in physical education high school and 47 high school adolescent non-athletes (21 male, 26 female) in general high school. Questionnaires, anthropometric measurements, 24-hour dietary recalls and blood analysis were conducted. In the males, the mean height, weight and body fat percents of athletes and non-athletes were 174.0/172.9 cm, 67.4/68.3 kg, and 8.9/20.0% (p<0.001) respectively. In the females, the mean height, weight and body fat percents of athletes and non-athletes were 163.7/159.3 cm (p<0.01), 58.7/55.7 kg (p<0.05), and 18.6/30.1 % (p<0.001) respectively. In both male and female athletes, intakes of animal fat were significantly higher and intakes of vitamin C were significantly lower than those of non-athletes. There was no significantly difference in zinc and copper intakes between athlete and non-athlete groups. The average serum zinc level of male athletes was significantly lower than that of male non-athlete. The average serum copper levels of male and female athletes were significantly lower than those of male and female non-athletes. Based on these results, exercise may effect on zinc and copper utilization of adolescent. Further studies on zinc and copper nutrition of adolescent athletes were needed to understand more mineral nutrition and exercise.

• Journal of Nutrition and Health
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• v.48 no.5
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• pp.381-389
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• 2015

Purpose: The objective of this study was to investigate the effects of a high fructose and fat diet on bone growth and maturation in growing female rats. Methods: Three-week-old female SD rats were randomly assigned to four experimental groups; the control group (CON: fed control diet based on AIN-93G, n = 8); the high-fructose diet group (HFrc: fed control diet with 30% fructose, n = 8); the high-fat diet group (Hfat: fed control diet with 45 kcal% fat, n = 8); and the high-fat diet plus high fructose group (HFrc + HFat: fed diets 45 kcal% fat with 30% fructose, n = 8). Each group was assigned their respective diets for the remaining eight weeks. Bone-related parameters (bone mineral density (BMD) and structural parameters, osteocalcin (OC), deoxypyridinoline (DPD)) and morphologic changes of kidney were analyzed at the end of the experiment. Results: Final body weights and weight gain were higher in the HFat and HFrc + HFat groups and showed higher tendency in the HFrc group compared with those of the CON group (p < 0.05); however, no significant difference in caloric intake was observed among the four experimental groups. The serum OC levels of the HFrc and HFrc + HFat groups were lower than those of the CON and HFat groups (p < 0.05). Urinary levels of DPD did not differ among the experimental groups. BV/TV and Tb.N of trabecular bone were higher in the HFrc + HFat group and showed a higher tendency in the HFrc group than those of the CON and HFat groups (p < 0.05). Tb.Pf of trabecular bone were lower in the HFrc + HFat group than those in the CON and HFat groups (p < 0.05). However, no difference in trabecular BMD was observed among the experimental groups. Cortical bone volume was higher in the HFat and HFrc + HFat groups than in the CON and HFrc groups (p < 0.05). No morphology change in kidney was observed among the experimental groups. Conclusion: Our study suggests that 8 weeks of high-fructose and high fat intake could improve the bone quality (Structural parameters) of trabecular and cortical bone of tibia in growing female rats.

• Journal of Korean Home Economics Education Association
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• v.34 no.2
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• pp.21-40
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• 2022

This study was conducted to survey students' current eating behavior and nutritional knowledge to provide researchers with basic data that can help students with positive, practical, and healthy eating habits. For this purpose, a self-administered questionnaire was distributed to students of a vocational high school located in Gyeongsangnam-do. A total of 270 questionnaires were collected from a convenience sample and the data were analyzed using SPSS Version 25.0. The results are as follows. First, 57.40% of students lived with "parents," and 55.56% of students' household monthly income levels were "Low." Second, as for the eating behavior of the subjects, the students who ate 'two meals' a day showed the highest at 64.81%, 'one meal' occupied 17.41%, and those who ate one meal a day, 'School cafeteria' was the eating place most frequently mentioned (65.96%). Third, when students were classified based on their nutritional knowledge levels, "High" group comprised 37.78%, "Moderate" group 37.41%, and "Low" group 24.81% of the total students. Regarding the experience of nutrition education, 64.44% answered 'no experience of nutrition education' in the last 12 months, and among the 35.56% of students who had received nutrition education, 72.92% received the education from school teachers. Based on these results, to prevent problems with the eating habits that can occur to vocational high school students, organic cooperation between families, schools, and local communities is required. Furthermore, full support from the government is needed. In addition, more efforts are needed for practice-oriented dietary education so that nutritional knowledge can be converted into correct eating behavior.

• Journal of the Korean Society of Food Culture
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• v.39 no.1
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• pp.53-63
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• 2024

This study aimed to investigate the relationship between the nutrition quotient and the dietary intake of adolescents. A total of 393 adolescents were surveyed to evaluate their Nutrition Quotient for Korean Adolescents (NQ-A) scores and dietary intake. The average age of the survey subjects was 15 years and the average NQ-A score of the subjects was 49.11±13.35. There was no significant difference in the NQ-A scores according to gender and age. The average dietary diversity score was 3.77±0.85, and it was significantly higher in boys than in girls (p< .05) with the scores of 12-14-year-old students being significantly higher than those aged 15-18 years (p< .01). The results of comparing the percentage of recommended intake or adequate intake and the mean adequacy ratio (MAR) according to the NQ-A grade, showed that the 'High' grade had a significantly higher intake percentage of vitamin B1, B12, folate, phosphorus, iron and a significantly higher MAR (p< .05). From a long-term perspective, efforts to improve dietary habits are deemed necessary to meet an individual's nutritional requirements. Adolescents themselves should develop proper eating behaviors and acquire suitable dietary management skills to enhance their nutritional status, ultimately contributing to an improvement in their quality of life.

• Journal of Nutrition and Health
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• v.18 no.3
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• pp.225-233
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• 1985

The purpose of this study is to find out the factors affecting the dietary quality of adolescence through a random sampling of 798 girls, from 13 to 19 years of age in Chung-Nam province area. This survey was conducted from Febril 6 to 16, 1985. The results can be summarized as follows 1) The mean dietary score of nutrient adequacy of subjects was 11.93 out of possible 17, which showed that all nutrients intake might be lower than the R.D.A 2) The mean age of subjects was higher in the poorer dietary groups(P<0.01). 3) In the better dietary groups, the subjects were more satisfied with their present body shape, and the ratio of over weight was lower(P<0.01). 4) In the better dietary groups, the ratio of meals missed and meals performed irregularly was lower(P<0.01). 5) The preference of protein-food group was higher in the better dietary groups(P<0.01). 6) In the better dietary groups, the frequency of snacks and instant foods was higher(P<0.01).

• The Korean Journal of Community Living Science
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• v.24 no.4
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• pp.567-581
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• 2013

This study aimed to investigate fruit and vegetable consumption status of school children and adolescents and factors influencing their consumption from focus-group interviews with school nutrition teacher(s) and nutritionists. Most of all the evaluated fruit and vegetable intake levels of school children and adolescents was very low. They mentioned the intake of fruit and vegetable was similar between children and adolescents and boys tended to have less vegetable intake than girls. There was substantial difference in the serving frequencies of fruit between schools due to budgets. Fruit was consumed more than vegetables and fruit without seeds or peeled fruit was more preferred by children and adolescents. Factors affecting fruit and vegetable intake of children and adolescents were analysed by personal, family and school. Personal factors were gender, child development level, the lack of knowledge or perception on vegetables, westernized diet pattern and the preference of spicy foods. Family factors were the perception of parents, family meal environment, and income disparity. The factors related to schools were the principal, class teacher, friends, nutrition teacher, cooking and serving methods, cooking personals, budget and so on.