• Journal of the Korean Home Economics Association
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• v.51 no.2
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• pp.219-228
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• 2013

The major purpose of this study was to explore the relation of a child's need for approval, anxiety and anger-in on a child's relational aggression according to gender. The study's participants included 464 boys and girls selected from fifth-and sixth-graders at an elementary school in Busan. A child's need for approval, anxiety, anger-in and relational aggression were assessed with their own self-reports. For data analysis, Cronbach ${\alpha}$, T-test, Pearson correlation coefficients, and Multiple Regression were used. The collected data was analyzed by the SPSSWIN 18.0 program. The major findings were as follows: First, child's anger-in demonstrated a significant difference among sexes. Girls indicated higher points than boys. Second, Boys' need for approval indirectly affected child's relational aggression through anger-in. Boys' anger-in was directly affected by relational aggression. Boys' anxiety was directly affected by anger-in. And boys' anxiety indirectly affected child's relational aggression through anger-in. Third, Girls' anxiety was directly affected by relational aggression. Need for approval and anxiety were directly affected by anger-in. The findings from this study indicates that child's need for approval, anxiety and anger-in are important elements in relational aggression are affected differently depending on the child's gender. Also, this study has meaning in that it can be used as fundamental data to develop a teaching plan and counseling program for children that can decrease relational aggression.

• Journal of the Korean Society of Food Science and Nutrition
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• v.46 no.9
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• pp.1128-1136
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• 2017

Previous studies of the caffeine consumption pattern were limited primarily to beverages containing caffeine. Therefore, this study examined the caffeine consumption patterns and levels in beverages and foods containing caffeine among high school students (n=310) in the Yongin region. The participants included 171 boys (55.2%) and 139 girls (44.8%). The daily mean caffeine intake of the respondents was 41.27 mg (0.651 mg/kg) and 36.47 mg (0.696 mg/kg) in boys and girls, respectively. Among the caffeinated food groups, coffee had the highest caffeine intake group in both boys (18.95 mg) and girls (26.28 mg). Girls consumed large amounts of caffeine in the form of Americano-style coffee (20.04 mg), whereas boys consumed more canned coffee (6.77 mg) than girls (2.43 mg, P<0.01). Carbonated soft drinks were the second most prevalent source of caffeine intake in both groups, even though boys (14.29 mg) consumed larger amounts of caffeine than girls (5.85 mg, P<0.001). Multiple regression analysis investigating the major contributing food group to daily total caffeine intake also showed that the highest standardized coefficient was in coffee regardless of gender (boys 0.492, P<0.001 and girls 0.944, P<0.001), followed by carbonated soft drinks and energy drinks. Approximately 95% of high school students consumed normal levels of caffeine, whereas 3.5% of boys and 5.8% of girls consumed excessive amounts based on the standard limit of Korea Food and Drug Administration (<2.5 mg/kg/d) for adolescents. The daily mean caffeine intake of the excess group was 5.38 mg/kg and 6.96 mg/kg in boys and girls, respectively. Consequently, safe daily caffeine intake needs to be determined throughout continuous national management guidelines and nutritional education.

• Nutritional Sciences
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• v.5 no.4
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• pp.234-244
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• 2002

This study was conducted to compare the rates of hyperlipidemia, hypertension, high blood glucose, and liver dysfunction, between 64 obese children (24 boys and 11 girls who were moderately obese, and 21 boys and 8 girls who were severely obese) and 45 normal weight children (31 boys and 14 girls) from 13 elementary schools in Kangnung city. Among the boys with severe obesity, the levels of serum triglycerides and LDL-cholesterol (133.60 $\pm$ 49.99 mg/dl and 105.00 $\pm$ 41.12 mg/dl( respectively) were significantly higher compared to the normal Weight group (81.16 $\pm$ 23.59 mg/dl and 87.74 $\pm$ 32.095 mg/dl, respectively) of moderately obese group (102.30 $\pm$ 36.03 mg/dl, 89.99 $\pm$ 32.10 mg/이, respectively). In girls, only serum triglycerides were significantly higher in the severely obese group (154.30 $\pm$ 46.84 mg/dl), compared with the normal weight group (80.00 $\pm$ 25.31 mg/dl) or moderately obese group (106.40 $\pm$ 41.73 mg/dl). In boys, blood pressure in the severely obese group (systolic: 120.5 $\pm$ 9.74 mmHg; diastolic: 80.95 $\pm$ 10.44 mmHg) was significantly higher compared with the groups of normal weight or moderately obese children. The rate of hypertriglyceridemia was significantly different among normal weight, moderately obese, and severely obese boys (9.7%, 41.7%, and 76.2%, respectively). The proportion of boys who had an Atherogenic Index(AI) higher than 3 was found to be significantly higher in the severely obese group (28.6%), compared to 6.5% in the normal weight group and 4.1% in the moderately obese group. Among boys, a significantly higher rate of hypertension was found in the severely obese group, which showed high systolic blood pressure and high diastolic pressure (81.0% and 81.0%), compared with the normal weight group (16.1% and 22.6%) and moderately obese group (33.3% and 33.3%). In conclusion, the diagnosis and management of obese children needs to be tailored to gender and the degree of obesity. Furthermore, a systematic management program needs to be developed for early screening and detection of obesity in order to minimize the risk of hyperlipidemia and hypertension, especially in severely obese children.

• Journal of Nutrition and Health
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• v.33 no.3
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• pp.279-288
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• 2000

The study examined BMIs, physical strength, activities, and the attitudes and behavior toward weight control among 7,968 Korean students{2,435 5th graders from elementary schools(ESs), 2,524 2nd graders from middle schools(MSs), 2,739 2nd graders from high schools(HSs)} nationwide. Compared to the 1987 data, there were increases of height(3-6cm) and weight(3-8kg), but decreases of physical strength and exercise. Lack of 'regular exercise' among girls from MSs and HSs and higher proportion of time spent on watching TV and using a computer for elementary schoolers were particularly noticeable. Proportions of students who were satisfied with their body weight were 49% for ESs, 35% for MSs, and 29% for HSs. There was no relationship between subjective and objective evaluations of body weight. Diet rather than exercise was more frequently chosen as a method of weight control. Compared to boys, girls showed stronger association between the amount of exercise and the subjective body weight in MSs and HSs, however this association was not found for the subjects from HSs. Values for the 50th percentile of BMI of boys and girls were 18.4 and 17.7 for ESs, 19.9 and 20.1for MSs, and 21.4 and 20.6 for HSs. In MSs and HSs, boys with BMI between 15th to 85th percentiles were physically stronger than those whose BMIs were lower than 15th kor higher than 85th percentiles. For the other groups, there was a trend of a positive relationship between BMI and physical strength. Based on the analyses of BMI and physical strength, this study suggests 22 and 21 for upper grades in ESs, 24 and 23 for MSs, and 27 and 25 for HSs as the respective cut off points of BMI for weight control n boys and girls. A need for implementing nutrition education program focused on weight control is also suggested.

• Journal of the Korean Society of Clothing and Textiles
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• v.30 no.11 s.158
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• pp.1538-1549
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• 2006

The purpose of this study was 1) to identify gender differences in appearance management behavior and influencing variables(media involvement, body satisfaction and self-esteem), 2) the effects of influencing variables on appearance management behavior, and 3) to analyze the relationships among influencing variables. The data were collected ken 458 fifth and sixth grade girls and boys of five elementary schools ill Seoul, Korea via self-administered questionnaires, and were analyzed by factor analysis, t-test, and multiple regression analysis. The results of this study were as follows: Regarding the gender differences in research variables, preteen girls showed more interest in clothing/hair style management, weight management, TV involvement and celebrity imitation than preteen boys. Girls showed lower level of satisfaction than boys. Multiple regression analyses were conducted to identify the effects of media involvement, body satisfaction and self-esteem on appearance management behavior. For boy group, clothing/hair style interest was influenced by celebrity imitation, and weight management by TV involvement, body satisfaction and school self-esteem, and height management by celebrity management and school self-esteem. For girl group, clothing/hair style management was influenced by celebrity imitation and general self-esteem, and weight management by body satisfaction, general self-esteem, celebrity imitation and TV involvement, and height management by school self-esteem, TV involvement, time spent watching TV and general self-esteem. From the results of analyzing relationships among influencing variables, it was found that media involvement influenced self-esteem; TV involvement and celebrity imitation influenced school self-esteem; body satisfaction had the effect on all three sub dimensions of self-esteem in boy group. For female group, TV involvement had the effect on body satisfaction, and celebrity imitation on general self-esteem, the family self-esteem and school self-esteem, and body satisfaction on all three sub dimensions of self-esteem.

• Journal of the Korean Dietetic Association
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• v.11 no.2
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• pp.190-204
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• 2005

The purpose of this study was to investigate the dietary related factors and blood parameters of moderately or severely obese children residing in Samcheok. Anthropometric measurement, 24-hour recall for dietary intake, blood analysis and questionnaire response including nutritional knowledge, nutritional attitude, body image recognition and eating habits were conducted in 23 obese children(16 boys and 7 girls) and their mother. The mean age of subjects are 10.0 years. The average body weight, BMI, obesity index and percent body fat were 57.5㎏, 27.0㎏/$m^2$, 47.3 and 38.1% in boys and 51.0㎏, 24.8㎏/$m^2$, 40.3 and 43.9% in girls. The average nutritional attitude, the self-satisfaction and the nutritional knowledge scores in subjects were 29.9/40, 32.7/50 and 7.3/10, respectively. 34.8% of the subjects were unsatisfied with their body image, whereas, 81.8% of their mothers were unsatisfied with children’s body image. 60.9% of subjects had one or both obese parents. Average intake of energy were 90.6% of RDA in boys and 84.3% of RDA in girls. The ratio of energy from carbohydrate/protein/fat were 66/16/18 in boys and 66/17/17 in girls. The mean serum cholesterol concentration of the subjects was 191.8mg/dl and 78.3% of the subjects were above the normal serum cholesterol rage of children. In the results of correlation analysis, obesity index was negatively correlated with self and mother’s nutritional attitude scores. Body weight and BMI were positively correlated with vitamin C(p<0.05) and fruits(p<0.05) intakes. And there was a positive correlation between obesity index and BMI, and serum cholesterol(p<0.05).

• Clinical and Experimental Reproductive Medicine
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• v.4 no.2
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• pp.23-34
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• 1977

A study was carried out for the evaluation on family situation of 900 homemakers those who had received tubal sterilization operation (laparoscopic and minilaparotomy) at family planning clinic, Seoul Red Cross Hospital from October 1974 to September 1977. The results obtained are as follows: 1) In age distribution, predominant age group consisted of those $31{\sim}35$ years frequency of 43.2% and average age was 33.3 years. 2) Educational level showed that homemakers who finished primary school accounted for 37.3% of the total and those having middle school education comprised 28.7%, and 24.3% of them were high school graduates, 8.3% of them were college graduates. On the other hand, husband's education level showed that, 37.6% of them were high school graduates, 29.7% were college graduates and 19.9% were middle school graduates, therefor, educational level of husbands was one step higher than wives. 3) In the gravidity at the tubal sterilization, the highest incidence(18.4%) among 853cases was the group of gravida 5, and 16.2% gravida 4, and the gravidity ranged $1{\sim}23$. Average gravidity of clients was 6.0. 4) Among the total number of 900 clients, 778cases (91.3%) had no experience of spontanous abortion, history of 1 abortion in 5.9%, 2 abortions in 1.8%, and it showed the decresed incidence of spontanous abortion recently. Average was 0.15. As regarding induced abortion, in spite of only 142 homemakers (16.7%) had no history of induced abortion, 20.5% had experienced 1 induced abortion before sterilization, 17.7% had 2 induced abortions, 14.6% had 3 abortions, 10.3% had 4 abortions, and 0.2% (2cases) had over 20 abortions. Average was 2.7. 5) In regarding to the number of living children, the greatest number (45.0%) of clients had 3 children, and 26.5% 2 children, 19.7% 4 children. Average number of their living children was 3.03. 6) Sex ratio of living children, among 18 clients those had 1 child, 17 homemakers had 1 boy and no girl, 1 homemaker had no boy and 1 girl only. Sex ratio showed that woman who had 2 boys and no girl accounted for 46.3%, however, those having no boy and 2 girls ocmprised only 1. 8% among 229 clients who had 2 children. Among 389 clients who had 3 children, in spite of woman who had 3 boys and no girl comprised 16.5%, but no boy and 3 girls only 1.5%. Among 170 clients who had 4 children, homemakers with 4 boys and no girl accounted for 4.1%, however, no boy and 4 girls 1.8% of the total. Among 52 clients, who had 5 children, woman with 5 boys and no girl comprised 3.9%, no boy and 5 girls 0%. Among 7 cases who had 6 children, there were 3 cases who had 3 boys and 3 girls, but only 1 cases had 1 boy and 5 girls and so on. These results showed a strong trend of male preference in Korea and this could be one of the inhibit factors for family planning.

• The Korean Journal of Food And Nutrition
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• v.27 no.3
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• pp.369-382
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• 2014

The aim of this study is to provide the fundamental information on satisfaction for school food service and dietary habits of middle school students in Sejong Special Self-Governing City. Generally, the subjects had a high satisfaction level for school food service. The boys had comparatively more satisfactory days for school food service than the girls. The most dissatisfactory factors of school food service were the taste and variety of menu for the girls, and the time and place for lunch and the service of employee for the boys. The intersexual differences existed with a significant difference in the irregular intake of meals, the reasons to skip meals, and the eating speed. For the boys, the main reason to skip meals was due to lack of appetite, and for the girls, it was the weight-control. The boys finished each meal within 5~10 min and ate more than the amount the girls eat in general. The main components of breakfast for the subjects were a cooked rice, soup, and side dish in 65.9%, and the frequency of skipping breakfast was high with 32.8%, which was once per week. The favorite snacks for the middle school students were cookies and beverages in 29.4%, instant foods in 24.3%, and hamburger and pizza in 21.4%. The intake frequency of snacks was once or twice per week in 46.5% of the subjects. In addition, the subjects had a very high intake frequency of fastfoods with once or twice per week in 72.7%, and the most favorite fastfood was ramen in 57.7%. The subjects in 45.3% took dairy food every day. In conclusion, the middle school students need nutrition education to improve their eating habit and to increase the frequency of breakfast.

• Korean Journal of Community Nutrition
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• v.5 no.3
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• pp.411-418
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• 2000

The purpose of this study was to investigate the relationship of body mass index with environmental and dietary factors including nutrition knowledge, and nutrition attitude of Korean adolescents. Anthropometric measurements, questionnaire responses, and 24-hour dietary records of 531 elementary, 543 middle, and 533 high school students residing in Seoul and Kyunggi-do were collected. Data was analysed using SAS computer program. The results are as follows. Mean BMI of elementary school boys was higher than that of girls. However, there were no significant differences in mean BMI between sexes both in middle and high school students. Calcium and iron consumption were lowest among elementary and middle school students, respectively when the intake was expressed as a percentage of the Korean RDA. Energy, protein, vitamin A, vitamin B$_1$, vitamin B$_2$, niacin, and vitamin C intakes(% RDA) were lowest among high school students. The factors influencing BMI of elementary students were BMI of the parents in boys, and BMI of the father in girls. In middle school students, energy intake, fathers BMI, mothers nutrition knowledge and students BMI, and nutrition knowledge were related to the obesity indices of boys, while fathers and mothers BMI were related to the mean obesity index of girls. In high school students, nutrition knowledge and mothers nutrition attitude were related to the obesity index of boys, while BMI of parents was related to the obesity index of girls. In conclusion, mothers and fathers BMI were the most common factors influencing the BMI of these adolescents. Although these results can not determine if food behaviour directly affects BMI, it may influence the BMIs of family members, and therefore nutrition education to keep normal weight and desiradle food habits should be emphasized. More systematic studies to investigate the cause-effect relations of these factors are required.

• Korean Journal of Community Nutrition
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• v.3 no.2
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• pp.190-201
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• 1998

This study was carried out with 505(243 boys and 262 girls in the Sungnam area) high school students to investigate the effects of eating behavior and anthropometric variables of weight and height on excercise performance. General characteristics about subjects and eating behavior were surveyed by questionnaire, anthropometric data were collected using two methods. The weight and height of subjects in 1996 were measured, but the same data in 1995 were collected from health records of each student. Body fat content of subjects was measured by BIA(Body Impedance Analysis). The grades of exercise performance, which were evaluated by physical education teachers were collected from records of a physical strength test score of each subject. From these, the following result were found. Groups with different eating behaviors such as skipping meals, overeating, food preference for a specific food(milk, carbonated drink etc.) were significantly different in their weight and height and body fat contents. The growth rate of height in first and second grade boys was significantly higher than that for grade boys. The amount of weight gain from second grade to third grade was significantly more than that of other grades both for boys and girls. The mean of BMI was $21.66\pm{2.95}$ in boy, $21.50\pm{2.62}$ in girls. The percentage of body fat was $24.91\pm{6.55%}$ in boy $34.73\pm{4.88%}$ in girls. Amounts of body fat were significantly increased in third grade. The group with higher fat content and the higher BMI group had lower values of physical strength. And the ability to exercises perform decreased significantly by promotion of grade. The other variables such as degree of concern about weight control and preference of exercise, and frequencies of exercise per week were significant factors in body fat content and physical strength. As a countermeasure for these problems, nutrition and health education must be developed for adolescents and a practical, proper physical activity guidance campaign for them is necessary.