• Journal of the Korean Society of Food Culture
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• v.24 no.6
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• pp.631-640
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• 2009

This study aim to identify preference of main and side dishes of 681 children who lived in Seoul and Gyoung-gi (Incheon) in 2007. To accomplish this, we divided the children into three age groups, an infancy group (below 6 years of age), a middle years group (between 7 and 12 years of age) and a juvenile group (above 12 years of age). Specifically, 145 children were in the infancy group (boys 68, girls 77), 300 children were in middle years group (boys 138, girls 162) and 236 children were in juveniles group (boys 131, girls 105). The average body mass index (BMI) of the parents of the respondents appeared to be normal, and the majority of the parents had bachelor degrees. Across all age groups, most fathers were office workers and most mothers were housewives. The preference for staple foods showed that the infancy group and the middle years group preferred rice the most, while the juvenile group preferred stir-fried rice the most out of 5 grain items. Evaluation of the preference for different types of noodles showed that both boys and girls from the infancy group preferred jajangmyun, while those in the middle years group and the juvenile group preferred spaghetti. For breads, both boys and girls from the infancy group had the highest preference for cake, while boys and girls in the middle years group and boys in the juvenile group preferred pizza the most, and girls from juvenile group preferred cake the most. Evaluation of the preference for soups and pot stew revealed that both boys and girls in the infancy group preferred seaweed soup, while boys from middle years group preferred seol-long-tang and girls from middle years group preferred seaweed soup. Boys and girls from the juvenile group preferred seol-long-tang the most. For hard-boiled foods and stir-fried foods, members of all age groups preferred beef boiled in soy sauce the most and hard-boiled peppers the least. Finally, comparison of the preference for roasted foods, seasoned vegetables and kimchi revealed that the infancy group preferred roasted seaweed the most and that both the middle years and juvenile group had the greatest preference for roasted galbi.

• The Journal of Korean Society for School & Community Health Education
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• v.12 no.3
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• pp.43-64
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• 2011

Objectives: The purpose of this study was to provide the nutritional education data of the fruit and vegetable eating habits and dietary fiber intake of male and female high school students in the Daegu area. Methods: A survey was conducted on 300 male/female students from four general high schools in the City of Daegu, and the survey included questions ongeneral characteristics, dietary habits, eating behavior patterns and dietary intake. A 24-hour recall method was used for the dietary intake, and the surveyed dietary intake information was analyzed using the Computer Aided Nutritional analysis program (CAN 3.0)--dietary fiber intake, in particular. The data was analyzed using the SPSS window 12.0 program. Results: The average ages of boys and girls were 16.8- and 15.6-years old, respectively. A classification based on BMI showed the following: the low-weight student group was comprised of 10.3% boys and 31.6% girls; the normal-weight group 68.4% boys and 67.5% girls; and the overweight group 21.3% boys and 0.9% girls, whereby showing a significant difference between boys and girls. Vegetable intake showed the following: the ratio of the response of 'taking it once a day' was more than 70%, which showed the low frequency of fruit intake; the ratio of 'taking it more than five times a week' was 53.0% for boys and 68.4% for girls, which showed a higher intake frequency for girls over boys; and the daily dietary fiber per 1,000kcal was 7.1g for boys and 8.2g for girls, whereby showing a significant difference between boys and girls. The meals that contributed most to dietary fiber intake were the school meals, whereas the dietary fiber intake rate through breakfast was the lowest among the three daily meals. The food groups that contributed to dietary fiber intake were vegetable, grains and flavoring matters for boys and vegetable, grains and fruits for girls. Conclusions: In order to increase the daily dietary intake for growing adolescents, who are in an important stage for building the foundation of health, it's recommended that, in addition to the supplement for insufficient dietary fiber through a regular breakfast consisting of high dietary fiber content foods, nutrition-related education about the effects of dietary fiber on the human body be conducted.

• Journal of the korean academy of Pediatric Dentistry
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• v.32 no.4
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• pp.693-702
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• 2005

Accurate timing and sequence of eruption of permanent teeth are indicies of growth and essential for pediatric dentistry and pediatric clinical orthodontics. From the children brought to the Yonsei Dental Hospital during 2001 to 2003, 654 boys and 542 girls, ranging in age from five to fourteen years, were selected and analysed. The following was concluded. 1. Eruption time of maxillary teeth is 6.81 years in boys, 6.78 years in girls for central incisor, 8.30 years in boys, 7.98 years in girls for lateral incisor, 10.28 years in boys, 10.04 years in girls for canine, 9.74 years in boys, 9.90 years in girls for first premolar, 10.87 years in boys, 10.41 years in girls for second premolar, 6.25 years in boys, 6.54 years in girls for first permanent molar, 12.21 years in boys, 12.03 years in girls for second permanent molar 2. Eruption time of mandibular teeth is 6.00 years in boys, 6.06 years in girls for central incisor, 6.99 years in boys, 6.74 years in girls for lateral incisor, 9.83 years in boys, 9.17 years in girls for canine, 9.92 years in boys, 9.75 years in girls for first premolar, 10.66 years in boys, 10.39 years in girls for second premolar, 5.99 years in boys, 5.75 years in girls for first permanent molar, 11.92 years in boys, 12.17 years in girls or second permanent molar. 3. The following eruption sequence was observed the first permanent molar erupted first, followed by the central incisor, the lateral incisor, the first premolar, the canine, the second premolar and the second permanent molar in the maxilla. The first permanent molar erupted first, followed by the central incisor, the lateral incisor, the canine, the first premolar, the second premolar and the second permanent molar in the mandible.

• Journal of the East Asian Society of Dietary Life
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• v.17 no.2
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• pp.192-197
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• 2007

The purpose of this study was to evaluate the energy intake and energy expenditure of obese children. The body weight and height were measured, and the daily energy intake and activity pattern assessed for one day, using the 24 hour recall method and interviews in 83 elementary school children (59 boys and 24 girls). The average age, height, weight, ideal body weight and obesity index in boys and girls were 11.8 years, 144.8 cm, 54.2 kg, 39.9 kg and 35.9% and 11.5 years, 140.8 cm, 48.9 kg, 36.9 kg and 33.7%, respectively. The mean daily energy intakes of boys and girls were 1,670.5 and 1,656.5 kcal; these being 76.4 and 88.5% of estimated energy requirement for Koreans, respectively. The energy intake ratio from carbohydrates, proteins and fats in boys and girls were 61.5:14.7:23.6 and 62.0:14.7:23.7, respectively. The resting energy expenditure, as estimated by the Harris-Benedict, WHO/NAO/FAO and Korean DRI formulae in boys and girls were 1,452.7, 1,239.2 and 1,629.2 kcal and 1,323.9, 1,156.0 and 1,252.4 kcal, respectively. The activity coefficient for both the boys and girls was 1.39. The daily energy expenditure of boys (1,990.7 kcal) was significantly higher than that of girls (1712.1 kcal). No significant correlations were found between the obesity index, energy intake and energy expenditure. These results suggested that a nutrition and exercise program is required to increase the energy expenditure of elementary school children. Further research will be needed to assess multiple dietary factors and dove]lop a standard method for assessing the energy expenditure of obese children.

• Nutrition Research and Practice
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• v.10 no.5
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• pp.537-545
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• 2016

BACKGROUND/OBJECTIVES: Dietary sugar intake, particularly added sugar and sugar-sweetened beverages, has received worldwide attention recently. Investigation of dietary behaviors may facilitate understanding of dietary sugar intakes of children and adolescents. However, the relationship between dietary sugar intake and dietary behaviors in the Korean population has not been investigated. Thus, this study aimed to estimate dietary sugar intake and food sources according to sex as well as examine the relationship of dietary sugar intake with frequent snacking and dietary patterns among Korean children and adolescents. SUBJECTS/METHODS: We pooled data from five studies involving Korean children and adolescents conducted from 2002 to 2011. A total of 2,599 subjects aged 9-14 years were included in this study. Each subject completed more than 3 days of dietary records. RESULTS: Mean daily total sugar intake was 46.6 g for boys and 54.3 g for girls. Compared with boys, girls showed higher sugar intakes from fruits (7.5 g for boys and 8.8 g for girls; P = 0.0081) and processed foods (27.9 g for boys and 34.9 g for girls; P < 0.0001). On average, 95.4% of boys and 98.8% of girls consumed snacks during the study period, and total sugar intake showed a significantly increasing trend with increasing energy intake from snacks (P < 0.0001 for both sexes). Two dietary patterns were identified by cluster analysis: Traditional and Westernized patterns. Total sugar intake was higher in the Westernized pattern (56.2 g for boys and 57.2 g for girls) than in the Traditional pattern (46.5 g for boys and 46.3 g for girls). CONCLUSIONS: These results suggest that multilateral and practical development of a nutrition education and intervention program that considers dietary behaviors as well as absolute sugar intake is required to prevent excessive sugar intake in Korean children and adolescents.

• The Korean Journal of Community Living Science
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• v.21 no.4
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• pp.457-467
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• 2010

In this research, we examined a total of 681 children(kindergarten, schoolchild, and adolescents) who live in Seoul and Gyoung-gi in 2007. The parents of the respondents seemed to have a normal average body mass index, and the majority of the parents had bachelor's degrees. Across all age groups, most of the fathers were office workers and the mothers were mostly house wives. The most preferred food was meats, and the least preferred food was vegetables. Results showed that all age groups have a snack once or twice a day, except boys from the schoolchild group. All age groups liked ice cream, fruits, and juices in their snacks. For eating-out, boys from the kindergarten group mostly preferred Chinese food, girls from the infant group mostly preferred Korean food. In addition, boys and girls of the schoolchild and adolescent groups mostly preferred Korean food. For cooking methods, the result of preference showed that boys from the kindergarten group preferred roasted meats, and girls from the kindergarten group preferred roasted meats, steamed rib and fish. Both boys and girls in the schoolchild group preferred roast meats, and boys from the adolescent group preferred stir-fry and girls from adolescent group preferred pot stew.

• Journal of Preventive Medicine and Public Health
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• v.33 no.1
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• pp.83-90
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• 2000

Objectives : To assess the prevalence rate of dyslipidemia and the level of related factors in adolescents groups in Seoul and Yangpyong area. Methods : Design; School based survey during May-Jun 1996 in Seoul and Yangpyong county. Subject; 2,453 boys and girls, aged 13 to 19 years; 1,137 Seoul and 1,316 Yangpyong county. Main Outcome Measures; Prevalence rates of raised serum total cholesterol, triglycerides, LDL-cholesterol, decreased HDL-cholesterol, obesity, and levels of energy intake and expenditure Results : Energy intake and fat intake of boys were higher than those of girls and they were higher in Seoul. Energy expenditure per day of boys was bigger than that of gins too. Prevalence rate of obesity was higher in boys of Seoul(15.2%) and girls in Yangpyong county(14.0%). Serum lipid profiles(total cholesterol, triglycerides, LDL-cholesterol) were higher among girls and all prevalence rates of dyslipidemia were higher in boys in Seoul and in girls in Yangpyong county. Especially, girls(29.1%) in Yangpyong had raised serum cholesterol level$(\geq170\;mg/dl)$. In contrast, boys in Seoul had higher level of decreased HDL-cholesterol(46.8%) compared to Yangpyong(23.6%). The relationships between serum lipid profiles and relative weights and sex are highly significant. And the relationship between triglycerides and energy intake is significant(p=0.038). But, the associations between serum lipid profiles and energy expenditure had borderline significances Conclusions : Hypercholesterolemia rates in girls were higher. Obesity prevalence rate was highest in boys of Seoul. Relative weight and sex are significantly related to lipid profiles. Therefore, Korea is in need of preventive strategies for different obesity and gender groups.

• Journal of the Korean Home Economics Association
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• v.49 no.8
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• pp.1-12
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• 2011

This study was designed to examine the effect of five years old boys' and girls' self-concept and leadership on the teacher-child relationship. The participants were 51 boys and 64 girls who were five years old in Jeonrabukdo. The results were as follows. First, in the case of the boys, there was significant relationship between their self concept of language, the parent relationship and an intimate teacher-child relationship. The self-concept of body and the teacher-child relationship of conflict were positively correlated. In the case of the girls, there were significant relationships between the self concept of body, language, the parent relationship, friends' relationship and the general and intimate teacher-child self-concept. The self-concept of mathematics and conflictive teacher-child relation were positively correlated. Second, there were significant relationships among the sub variable of leadership and an intimate teacher-child relationship. However, prosocial leadership, directedness and a conflictive teacher-child relationship were negatively correlated in the case of the boys. Third, the teacher-child relationship was affected by leadership more than the self concept, and prosocial leadership was highly related in boys and girls.

• Korean Journal of Child Studies
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• v.33 no.6
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• pp.149-168
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• 2012

This study explored the effects of maternal ambivalence over emotional expressiveness (AEE) and mother-adolescent communication on adolescent depression (depressed affect, positive affect, somatic symptoms and activity inhibition, interpersonal difficulties). Data were taken from 233 middle school students (128 boys, 105 girls) and their mothers. Regression analyses showed varying gender differences in the relationships among these variables. Boys with high maternal AEE had lower positive affect, and higher depressive affect, somatic symptoms and activity inhibition, and interpersonal difficulties, whereas girls' moods were not influenced by maternal AEE. In addition, boys with problems in mother-dolescent communication exhibited lower positive affect, higher depressed affect and interpersonal difficulties, but open communication was not related to any depressive symptoms. The mother-adolescent communication type did not appear to be associated with depression in girls either. Both boys and girls both had less open communication and more problem communication with mothers experiencing high AEE. Problem communication with mothers partially mediated the relationship between maternal AEE and interpersonal difficulties in boys only. Examination of maternal ambivalence over emotional expressiveness provides a deeper context for our understanding of negative family communication patterns and the psychological consequences, especially in mother-adolescent boy dyads.

• Journal of Oral Medicine and Pain
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• v.7 no.1
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• pp.86-94
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• 1982

Maximal active movements of the mandible in the vertical and the horizontal plane were measured in 147 boys and 155 girls. with an age of 13, 15, 17 years respectively. The studied persons had no pain or severe symptoms of dysfunction of the masticatory system and the method used in this paper was devised by Agerberg, and the numerical calculations were performed at the Dept. of Medical Engineering of Seoul National University Hospital. The obtained results were as follows : 1. The mean values of maximal opening in 13 year-old boys and girls were 58.5 mm,58.9 mm respectively, and the mean values of boys were increased with age. 2. The mean values of maximal lateral movement to the right in 13-year-old boys and girls were 9.1 mm, 8.3 mm respectively, and the mean values to the left were 9.3 mm, 8.7 mm resprctively. The mean values were not increased with age in both. 3. The mean values of maximal protrusion in 13-year-old boys and girls were 8.7 mm, 8.1 mm respectivly, and in all ages the mean values of boys were larger than those of girls. 4. The range of maximal mandibular movements in teen-agers with 95% probability prediction ellipses were presented.