• The korean journal of orthodontics
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• v.7 no.1
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• pp.13-22
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• 1977

The author investigated the timing of land and wrist ossification events taking place in the hamate and pisiform by means of roentgenographic examination and its relation to the peak growth velocities in body height. Materials obtained included 493 sheets of X-ray films taken from 257 boys ana 236 girls aged between 7 and 17 years lived in Seoul area. The results indicate that; 1) The average ages at occurrence of initial ossification of the hook of the hamate were 12 years 3 months in boys and 10 years 1 month in girls. 2) The average ages at which advanced ossification of the hook of the hamate occurred were 13 years 7 months in boys and 11 years 11 months in girls. 3) Initial ossification of the pisiform appeared at 13 years 0 month in boys and 10 years 2 months in girls. 4) All three ossification events in hand and wrist, and peak growth velocity in body height occurred earlier in girls than in boys. 5) Initial ossification in the hook of the hamate and pisiform preceded or coincided with peak growth in body height in most boys and girls, on the other hand, advanced ossification in the hook of the hamate occurred around peak growth in body height but in girls did it after peak growth in body height. 6) It would appear that initial ossification in the hook of the hamate or in the pisiform, both for boys and girls, provides a better indication of approaching peak adolescent growth in body height. 7) Advanced ossification in the hook of the tamale would indicate that the period of cercumpuberal peak growth had teen entered or finished.

• Fashion & Textile Research Journal
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• v.21 no.6
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• pp.813-820
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• 2019

This study identified actual wearing and size dissatisfaction with jeans worn by upper grade elementary school girls. A survey was conducted on 147 10~12-year-old girls in order to collect basic data to design a slim fit jeans pattern for upper grade elementary school girls. The result of the study are as follows. Upper grade elementary school girls wore jeans at least once a week, 46.9% were 1~2 times, 31.3% were 3~4 times and 21.8% were more than 5 times per week. The size of the jeans they wear was often one size or two sizes larger than the actual height section. Upper grade elementary school girls preferred jeans that fit well and allow for a full range of motion; in addition, waist and hip measurements were important criteria when selecting size. The preferred length of jeans was those that go to the ankle along with slim-style jeans made of "cotton+spandex". In terms of dissatisfaction with jeans, upper grade elementary school girls showed discomfort when the lower back waistline slipped when sitting and when there was a tight crotch area. In addition, cases of exchange or return were found to be due to fit, including waist, hip or thigh measurements even when the area most repaired is was the pant length.ired is pant length, cases of exchange or return were found to be due to fit, including waist, hip, or thigh measurements.

• Korean Journal of Community Nutrition
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• v.14 no.2
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• pp.175-181
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• 2009

The purpose of this study was to investigate the relationships of stress, depression, binge eating and food behavior of high school girls with their degree of BMI. One hundred twenty high school girls from the Seoul metropolitan area participated in this study. Self-administrated questionnaires to search for degree of stress, depression, binge eating, and food behavior were distributed. Anthropometric assessment was carried out to calculate the body mass index(BMI). The results are as follows: The mean of age and BMI of the subjects were $17.6{\pm}0.6$ years and $21.0{\pm}2.9kg/m^2$(ranged from 15.4 to $31.7kg/m^2$), respectively. 16.7%, 65.8% and 17.5% of the subjects were classified as under weight, normal weight and overweight, respectively. The average scores of stress, depression and binge eating were $124.9{\pm}31.4$, $15.2{\pm}9.8$, $29.5{\pm}7.8$ points, respectively. The food behavior score was $11.5{\pm}2.4$ points. Their degree of stress, depression, binge eating was significantly higher in overweight high school girls compared to underweight or normal weight high school girls. There were significant correlations of BMI with stress(p<0.05), depression(p<0.001), and binge eating(p<0.01). Also there were significant correlations of food behavior with stress(p<0.05), depression(p<0.05) and binge eating(p<0.001). These results indicate that the high school girls who have higher BMI seem to have more stress, depression, and binge eating habits. Also the high school girls who have more stress, depression and binge eating habits have poor food behaviors. Therefore proper control of emotions is required to maintain desirable food behaviors in high school girls.

• Journal of the Korean Society of Food Culture
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• v.26 no.5
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• pp.490-500
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• 2011

The purpose of this study was to investigate the snack and beverage intake patterns of students by body mass index groups (BMI <18.5, 18.5-23, 23-30, ${\geq}$30). Questionnaires were completed by 1381 high school students in Seoul, Incheon, and Gyeonggi-do, the area of Korea's capital region. There were no significant differences in skipping meals for overweight (BMI 23-30 and ${\geq}$30) or under-nourished (BMI <18.5) students. Girls skipped dinner more frequently than boys. Boys and girls both preferred meat and disliked fish regardless of BMI. Girls with BMI 23-30 disliked vegetables. Boys and girls would rather have crackers, candies, and chocolates than potatoes as snacks regardless of BMI. Obese boys (BMI ${\geq}$30) preferred flour-based food, fast food, and other food as snacks. Girls liked fruits more than boys. Snacks were eaten 2-3 times per week, when students were hungry or bored. There were no significant differences in the frequency or reasons (habitual, stressed) for snack consumption by BMI. Girls liked juice more than boys did, and boys preferred soda water more than girls did. Both the under-nourished (BMI <18.5) boy and girl groups had more juice than the overweight (BMI 23-30 and ${\geq}$30) groups. Obese (BMI ${\geq}$30) boys did not more drink soda water than other BMI groups. The under-nourished (BMI <18.5) boy group had more soda water than the normal (BMI 18.5-23) and overweight (BMI 23-30) groups. Girls in the overweight (BMI 23-30) group had 2 more cups of soda water a day than the normal group (BMI 18.5-23). Therefore, skipping meals and beverage intake patterns might influence BMI.

• Women's Health Nursing
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• v.24 no.2
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• pp.219-228
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• 2018

Purpose: The purpose of this study is to evaluate sexual maturation, attitudes toward sexual maturity, and body esteem in the sexual development of Korean elementary-school boys and girls. Methods: A descriptive cross-sectional study was conducted with 399 fifth and sixth graders (192 boys and 207 girls). The data were analysed with a $x^2$ test, t-test, and Pearson correlation coefficients. Results: Among the 207 girls, 70.5% had pubic hair growth, 68.1% had breast development, and 56.0% had a menstrual period. In boys, 59.4% of the 192 subjects experienced the development of external genitalia and 52.6% had pubic hair growth. Sexual maturation was related to grade (boys, t=7.07, p=.008; girls, t=12.76, p<.001), age (t=-2.20, p=.030; t=-4.11, p<.001), height (t=-5.16, p<.001; t=-7.52, p<.001), and weight (t=-2.89, p=.004; t=-5.19, p<.001) in both boys and girls. Girls were more likely to have sexual maturity than boys ($x^2=22.29$, p<.001). Boys showed more positive attitudes toward sexual maturity (t=2.10, p=.036) and higher body esteem (t=2.12, p=.035) than girls. Conclusion: This study shows that sexual maturation, attitude toward sexual maturity, and body esteem in sexual development differ between boys and girls. The findings indicate that it is necessary to develop a tailored sex-education program according to the sex of elementary-school children.

• Clinical and Experimental Pediatrics
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• v.58 no.8
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• pp.294-300
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• 2015

Purpose: It is difficult to differentiate between central precocious puberty (CPP) and premature thelarche (PT) in girls. The aim of this study was to investigate the diagnostic usefulness of pelvic ultrasonography to distinguish between CPP and PT in girls with early breast development. Methods: This study included girls with early breast development who visited the clinic between January 2012 and December 2013. Clinical, laboratory, and pelvic ultrasonographic data were evaluated. CPP and PT were confirmed using the gonadotropin-releasing hormone stimulation test. Results: A total of 248 girls aged 7-8 years were included, among whom 186 (75.0%) had CPP and 62 (25.0%) had PT. The uterine length, transverse diameter, fundus, volume, and cross-sectional area were significantly larger in the CPP group (uterine length, $2.45{\pm}0.50cm$ vs. $2.63{\pm}0.49cm$, P=0.015; uterine volume, $0.95{\pm}0.62cm^3$ vs. $1.35{\pm}0.76cm^3$, P<0.001). However, there were no differences in the fundus/cervix ratio and ovarian measurements. In receiver operating characteristic analysis, a uterine volume of at least $1.07cm^3$ was the most predictive parameter for CPP with an area under the curve of 0.670 (95% confidence interval, 0.593-0.747). Conclusion: Uterine measurements by pelvic ultrasonography in girls with early pubertal development were significantly larger in the CPP group. However, the diagnostic value of ultrasonographic parameters was not high because of a considerable overlap of values between the two groups. Therefore, pelvic ultrasonography in combination with clinical and laboratory tests may be useful to distinguish between CPP and PT in girls.

• Korean Journal of Human Ecology
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• v.23 no.3
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• pp.379-393
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• 2014

This study aimed to investigate how child neglect abuse by parents, children's intimacy with teachers and peer attachment influenced boys' and girls' psycho-social maladjustment(aggression, social withdrawal and depression). The subjects were 2,264 elementary school students(boys: 1,180, girls: 1,084) in upper grades participating in the Korea Child Youth Panel Surveys. The data were analyzed with descriptive statistics, correlations and hierarchical regressions. The main results of this study were as follows. Firstly, regardless of children's sex, as child abuse levels by parents are higher, so children's aggression levels are higher. Also, children's intimacy with teachers and peer attachment moderated the effects of child neglect abuse by parents on both boys' and girls' aggression. But the patters of moderating effects were differed in children's sex. Secondly, child neglect abuse by parents didn't influence boys' and girls' social withdrawal and boys' peer attachment moderated the effects of child neglect by parents on boys' social withdrawal. Finally, child abuse by parents strongly influenced boys' depression, but child neglect by parents strongly influenced girls' depression. Also, there were no moderating effects of children's intimacy with teachers and peer attachment on the relation between child abuse neglect by parents, and boys' and girls' depression.

• Fashion & Textile Research Journal
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• v.6 no.4
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• pp.467-474
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• 2004

The purpose of this study was to identify egocentrism, self-consciousness, and body cathexis between Boys' and Girls' high school students. It helps us to understand them. Also we investigated the correlation between psychological characteristics and clothing behavior of high school students. The questionnaire were administered to 630 boys' and girls' high school students living in Jinju, Gyeongnam, and the data were analyzed by Frequency, Factor Analysis, Pearson's Product Moment Correlation, ANOVA, Multiple Regression Analysis and Duncan test. Egocentrism of high school boys and girls showed middle levels of mean and distribution, and sympathy was the highest at coeducation high School whereas a sense of justice was the highest at boys' high school. Self-consciousness was high level at both boys' and girls' high school, but public self-consciousness was higher than personal one. Both of them were higher in girls' than in boys'. Also body satisfaction was a little high and boys satisfied with their faces, busts, and whole body more than girls. There were significant differences among dressing for others, clothing interest, psychological dependence, exhibition except conformity. Girls have dressing for others, clothing interest, and exhibition more than boys. There were significant positive correlations among dressing for others, clothing interest, psychological dependence, and conformity whereas exhibition was negatively related to clothing behavior. Public self-consciousness, appearance, and popularity were the most influential variables to dressing for others. Also gender was proved to be one of the most influencing factors on students' clothing behavior.

• Journal of the Korean Society of School Health
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• v.12 no.2
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• pp.243-262
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• 1999

Today, obesity is not recognized as a disease itself but is known to be the indirect cause of much chronic illness. Obesity has an impact on psychological disorders including severe inferiority, damage of body self-image, low self-esteem, personality disorders. The results in an increase of the mortality rate. Therefore, this study attempts to discover and evaluate stressful experience in obese teenagers. For this study, 21 girl students and 19 boy students in Pusan middle or high school located were selected. The data were collected from March to May at 1999. A tape-recorder was used under the permission of the subjects to prevent the loss of spoken information and communication. This study consisted of 563 reponses from girls and 461 responses from boys which were then classified with descriptive expressions and priority classifications. The results generated 72 common elements in girls and 54 common elements in boys. From these elements 24 syntheses of hypothetical definitions and 8 identifications of the structural definitions in both girls and boys were developed. The structural and hypothetical definitions were as follows: The analysis of the data was made through a phenomenological analytic method suggested by Van kamm, which is as follows: 1. Maladjustment to school life; lack of understanding of the teacher, insufficient exercise ability, and a feeling of burden in attending the school obesity program. 2. Conflict in family relationships; lack of understanding from the family, a feeling of alienation. 3. Conflict in friend relationships; lack of understanding among friends, constant comparisons in appearance and body with friends (in girls) and estrangement from friends (in boys). 4. Conflict in acquaintance of the opposite sex; hoping to meet the opposite sex, lack of understanding of boy friends (in girls), feelings of pain, feelings of anxiety (in girls) feelings of burden (in girls) feelings of envy (in boys). 5. Negative body image: shape of body; feelings of pain; feelings of powerlessness; feelings of discomfort, and reception; emotional disorders (in boys), and change of personality (in boys). 6. Health disorder: Physical and psychological discomfort. 7. Feelings of burden in weight control; negative experiences in weight control, interference with family and friends, the difficulty in diet therapy, feelings of burden in exercise (in girls), to be teased by the public through mass media (in boys).

• Journal of Families and Better Life
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• v.28 no.1
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• pp.37-49
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• 2010

This study investigated the effects of three factors - children's age, sex and parental feeding styles - on children's self-help skills. The subjects were 213 children and their parents who lived in Kwanak-ku, Seoul. The three-way analysis of variance was employed. The main results were as follows: 1. Children's autonomy was varied significantly according to their sex. Girls do better by themselves than boys do in toileting, washing and drying hands, putting on and buttoning up a coat, putting on clothes, washing and drying their faces. Children's autonomy also varied significantly according to age. A majority of the autonomy subsets increased as the children's ages increased. However, drying their hands with a towel, removing their coats, and drinking water did not vary by age. 2. Children's autonomy also varied significantly according to their parents' feeding style. A responsive feeding style encouraged children to drink water by themselves. 3. The group with the highest score in self-help skills in toileting was 6-year-old girls, and the group with the lowest score was 3-year-old boys. Additionally, the groups with the highest scores in toileting were 4-year-old girls whose parents demonstrated a neglective feeding style, 5-year-old girls whose parents demonstrated an authoritative feeding style, 5-year-old girls whose parents demonstrated a responsive feeding style, 3-year-old boys whose parents demonstrated a responsive feeding style and 6-year-old boys whose parents demonstrated a neglective feeding style. Conversely, the groups with the lowest scores in toileting were 3-year-old girls whose parents demonstrated an authoritarian feeding style, 5-year-old girls whose parents demonstrated a neglective feeding style, and 3-year-old and 6-year-old boys whose parents demonstrated an authoritarian feeding style. 4. The group with the highest score in removing their coats was girls whose parnets demonstrated authoritative, responsive or neglective feeding styles. The group with the lowest score in removing their coats was boys whose parents demonstrated authoritative or neglective feeding styles.