• International Journal of Human Ecology
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• v.12 no.2
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• pp.13-24
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• 2011

This study compared actual weight with perceived weight, described the prevalence of unhealthy weight control behavior, determined the differences in psychological and personal variables between participants that reported unhealthy weight control behavior and those who did not, and examined the relationship of eating habits to unhealthy weight control behavior for Korean adolescents. The study population consisted of a nationally representative sample of middle and high school students who completed the Fifth Korea Youth Risk Behavior Web-based Survey (KYRBWS): Fifth in 2009. Among the 75,066 participants of KYRBWS, 35,473 (n = 18,851 girls and 16,622 boys) were eligible for a research focused on unhealthy weight control behavior. The results of this research were as follows: First, there were considerable discrepancies (45.1% of girls and 32.8% of boys) between the perceived weight and the actual weight. Second, overall, unhealthy weight control behavior was more prevalent in girls and fasting was the most commonly reported behavior. Third, participants that reported unhealthy weight control behavior scored significantly lower on scaled measures of happiness, health, academic achievement, and economic status; in addition, they scored higher on stress measures. Fourth, girls and boys shared common protective factors of having breakfast and vegetables more often, perceiving their weight as underweight rather than overweight, and having a correct weight conception. Protective factors unique to girls were having lunch and dinner more often. Girls and boys shared common risk factors of the consumption of soda, fast food, instant noodles, and snacks more often, while consumption of fruit more often was a risk factor only for girls. The improvement of protective factors and minimization of risk factors through Home Economics classes (and other classes relevant to health) may mitigate unhealthy weight control behavior of adolescents.

• Journal of the Korean Society of School Health
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• v.17 no.1
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• pp.41-53
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• 2004

Purpose : In an attempt to analyse gender-egalitarianism related to the general characteristics, sexual consciousness and behavior in middle school students, this study was carried out. This study will provide data that can be used to develop sexuality education programs on the basis of gender-egalitarianism. Method : The subjects were 141 students (70 boys and 71 girls) in 4 classes that were randomly selected from among 8 classes of first graders in a coeducational middle school, in Seoul. For the evaluation of gender-egalitarianism, a Gender Egalitarianism Scale modified by the researcher was used. Results : Major findings were as follows: 1. Gender-egalitarianism was significantly higher in girls compared with boys. All of the boys and girls, had high gender-egalitarianism in the aspect of woman's ability in groups without sexual discrimination, but low gender-egalitarianism in woman's sexual conversation and style of dress. 2. Gender-egalitarianism in boys who had experienced intersexual physical contact, categorized as holding hands, embracing, kissing, and petting, was significantly higher when compared with inexperienced boys. 3. Gender-egalitarianism significantly increased as the father's education level increased as well as the father's open-mindedness. Factors influencing gender-egalitarianism was social acceptance, the mass media, the attitudes of the school teachers, and the attitudes of older and younger student in school. Conclusions : Based on these results, boys' gender-egalitarianism was lower than that of girls. Systematic education on gender-egalitarianism, combined with sexuality education, is necessary for middle school students, especially boys. In the long term, social acceptable the, mass media, school and home life should be changed for the achievement of the equality of the sexes.

• Journal of Nutrition and Health
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• v.38 no.7
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• pp.544-552
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• 2005

This study was conducted to examine the correlation among bone mineral density (BMD), hair and nail calcium and magnesium contents, and nutrient intakes in preschool children in Chungnam district. A total of 111 preschool children (61 boys, 50 girls) measured the anthropometric characteristics, the bone mineral density of carpus using DEXA and hair and nail calcium and magnesium contents were analyzed by ICP spectrometer. The average ages of the study subjects were 55.7 months in boys and 53.0 months in girls (3.8${\~}$7 years). The birth height and weight of subjects were 51.0 cm and 3.3 kg in boys and 50.3cm and 3.2kg in girls, respectively. The average height, weight, $\%$ body fat, and obesity index were 111.6 cm, 19.6 kg, $15.0\%,\;96.1\%$ in boys and 108.6 cm, 18.5 kg, $17.5\%,\;98.1\%$ in girls, respectively. The bone mineral density in carpus was $0.25 g/cm^2$ in boys and $0.24 g/cm^2$ in girls. The hair calcium and magnesium contents were 440.9 ppm, 16.4 ppm in boys and 373.2 ppm, 28.9 ppm in girls. The nail calcium and magnesium contents were 9.4 ppm, 2.1 ppm in boys and 10.4 ppm, 2.4 ppm in girls. The intakes of energy, calcium, iron, zinc, vitamin A. niacin, and vitamin C did not meet the Korean RDAs. The ultradis and average carpus BMD were positively correlated to the plant calcium intake (p < 0.05, p < 0.05). And the ultradis, distal, and average carpus BMD were positively correlated to the plant iron intake (p < 0.05, p < 0.05, p < 0.05). The average bone mineral density in the carpus was positively correlated to the nail magnesium content (p < 0.05). Therefore, more systematic studies to investigate the roles of iron and calcium intakes, nail magnesium content in bone development of preschool children were required.

• Journal of Nutrition and Health
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• v.43 no.5
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• pp.475-488
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• 2010

The daily caffeine intake from elementary school children's favorite foods was surveyed and evaluated. Children may respond to caffeine differently from adults because they have different physiological makeup and are functionally immature. Therefore, caffeine exposure may have more serious consequences for children than for adults, irrespective of sensitivity. Their preference, perception, and intake of caffeine from children's favorite foods were investigated by questionnaire for 355 children. The order of children's preference over foods containing caffeine was ice cream and ices, confectionary, milk and milk products, and soft beverage. The daily caffeine intake of children was estimated to range from 0.16 to 917.28 mg/day, with an average of $36.04\;{\pm}\;82.7$ mg/day and $36.9\;{\pm}\;96.0$ mg/day for boys and girls, respectively. The daily caffeine intake according to body weight was $1.08\;{\pm}\;2.23$ mg/kg and $1.12\;{\pm}\;2.66$ mg/kg for boys and girls, respectively. The percentage of acceptable daily intake (ADI) of caffeine was 43.4% for boys and 44.9% for girls. The sources of caffeine for boys and girls were soft beverage (18.3 mg and 16.1 mg), milk and milk products (8.9 mg and 8.5 mg), ice cream and ices (5.7 mg and 7.3 mg), chocolate (1.6 mg and 3.2 mg), and confectionery (1.6 mg and 1.8 mg).

• Journal of the Korean Home Economics Association
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• v.38 no.6
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• pp.171-183
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• 2000

This study investigated the relationship among children's sensation seeking, maternal childrearing behavior and children's problem behavior. The subjects were 470 5th and 6th grade elementary school students in Pusan, Korea. Zuckerman's questionnaire on sensation seeking(1994), Park, Young Yae's questionnaire on maternal childrearing behaviors(1995) and Kim Hye Ryun's questionnaire on children's maladjustment behavior(1993) were used. The results were as follows : (1) According to sex, there were significant differences in sensation seeking stores, the aggressive behavior scores and distracted behavior scores. The boys got higher scores than girls in sensation seeking scores, and also in aggressive behavior scores and distracted behavior scores. (2) There were significant positive correlations between sensation seeking scores and the aggressive behavior scores for both boys and girls. And there were significant positive correlations between sensation seeking scores and the distracted behavior scores for both boys and girls. (3) Both sensation seeking and maternal child rearing behavior predicted aggressive behavior and distracted behavior for both boys and girls. For boy's aggressive behavior, sensation seeking and maternal child rearing behavior explained 8%, 8%, respectively. For boy's distracted behavior, sensation seeking explained 5%. And for girl's aggressive behavior, sensation seeking and maternal child rearing behavior explained 27%, 9%, respectively. For girl's distracted behavior, sensation seeking and maternal child rearing behavior explained 28%, 7%, respectively. The sensation seeking variable was the important predictor influencing on children's aggressive behavior and distracted behavior. Implications of this study were discussed in terms of sensation seeking and socialization.

• Journal of Korean Home Economics Education Association
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• v.33 no.2
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• pp.95-113
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• 2021

This study examined the food group and dietary nutrient intakes by sugar-sweetened beverage(SSB) intake level in high school students aged 15~18 years(n=2,377) using the 2007~2015 Korea National Health and Nutrition Examination Survey. Subjects were classified into three groups by SSB(included carbonated drinks, sports drinks, and caffeinated drinks that contained added sugars) intake level obtained from 24-hour recall method: SSB 1(SSB intake 0 g/d), SSB 2(0 g/d < SSB intake < 50th percentile) and SSB 3(SSB intake ≥ 50th percentile). Result of daily intakes of SSB were 160.6±10.5 g/d for boys and 98.6±7.1 g/d for girls and it increased for boys(p<0.0001) and girls(p=0.0280) by year. The highest intakes were carbonated drinks followed by fruit juices for boys and girls. Intakes of carbonated drinks increased as 2.7 times for boys(p<0.0001) and 1.6 times for girls between 2007 and 2015 year. Daily intakes of vegetables were the lowest in SSB 3 of three groups for boys and girls(p<0.0001), and those of fruits were lower in SSB 2 and SSB 3 than SSB 1 for boys(p=0.0013). Daily intakes of milk & milk products decreased toward SSB 3 group for boys(p<0.0001) while those were the lowest in SSB 3 of three groups for girls. Daily intakes of dietary fiber(21.3~25.3%) and calcium(49.6~59.8%) were very low compared to the dietary reference intakes. Percentage of daily intakes compared to the dietary reference intakes increased for energy for boys and girls(p<0.0001) while decreased for vitamin C toward SSB 3 group for boys(p<0.0001) and girls(p=0.0382). Those of calcium were the lowest in SSB 3 of three groups for boys(p<0.0001) and girls(p=0.0008). Ratio of excess intakes of energy/fat increased toward SSB 3 group for boys and girls(p=0.0002). Ratio of calcium deficiency was not different among groups but that was very high(85.9~92.5%). Therefore, it should be emphasized to reduce SSB intakes in order to improve diversity in food group and dietary nutrient intakes among high school students through dietary education and government support.

• Journal of the Korean Dietetic Association
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• v.17 no.1
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• pp.32-46
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• 2011

This study was conducted in order to improve nutritional support based on analysis of the eating habits and training schedule of junior and senior high school fencers. A survey was conducted on 30 fencers (junior boys=9, girls=7; senior boys=4, girls=10) using a questionnaire. Total daily calorie intakes were 2325.7${\pm}$1168.5 kcal (boy), 2344.0${\pm}$786.3 kcal (girl) for junior fencers and 2183.3${\pm}$726.6 kcal (boys), 2654.4${\pm}$1043.6 kcal (girls) for senior fencers. Nutrients below the RDIs were riboflavin and vitamin C for junior boy fencers and vitamin A, riboflavin, niacin, and vitamin C for senior boy fencers. The rates of the participants who had obtained nutritional information were 44.4% (boys) and 14.3% (girls) for junior fencers and 50.0% (boys) and 80.0% (girls) for senior fencers. Approximately half of the fencers had meals twice a day (55.6% for junior boy fencers, 57.1% for junior girl fencers, and 50.0% for senior fencers). The number of the fencers who were interested in nutrition varied: 66.7% and 28.6% of the junior boy and girl fencers answered they were interested in nutrition, while 25% and 60% of the senior boy and girl fencers showed interest in nutrition issues. Recommendations of total calories were 2,874 kcal (boys) and 2,377 kcal (girls) for junior fencers and 3,398 kcal (boys) and 2,375 kcal (girls) for senior fencers respectively. A dietary plan for the fencing players during training periods was designed to improve their health and performance. Athletes can simultaneously refuel and repair their bodies while contributing to their rehydration goals by consuming fluids that are sources of carbohydrates and protein, e.g., flavored milk and liquid meal supplement. Specific sport nutrition education applicable to athletes, especially young athletes, is recommended under professional support. Professionals may then target particular categories of athletes for the development of educational programs aimed at improving growth and athletic performance.

• Korean Journal of Child Studies
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• v.1
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• pp.15-27
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• 1980

PURPOSE This study was intended to analyze the play-form of normal preschool children as related to age, sex, educational experience and social maturity. METHOD 1. Subjects The subjects of this study were eighty seven 3-, 4- and 5-year-old preschool children attending educational institutions in Seoul. 2. Instruments The instruments used in this study consisted of twenty one-minute observations in 5 preschool settings and a questionnaire designed to measure the children's social maturity filled in by their parents. The observations provided information on the children's free play, that is 1) play-form: solitary, parallel and group play 2) use/non-use of toys 3) behavior: play, activity, doing nothing, onlooking 4) stationary/moving dimensions 5) play group size The questionnaire measured such factors as communication, socialization, locomotion, self-help and self-direction. 3. Data Analysis Data analysis consisted of percentage and Chi square. RESULTS 1. Play-Form The relationship between age and play-form proved to be significant at the .05 level. That is, in both boys and girls, solitary play decreased with age and group play increased with age while parallel play maintained a similar position. The relationship between sex and play-form proved to be significant at the .05 level in 3-& 4-year-old children, but not significant in 5-year-old children. That is, in their $3^{rd}$ year boys engage in the solitary play more than girls and in their $4^{th}$ year boys engage in more group play than girls. 2. Toys Without differentiation of sex and age, cases of using toys in play exceed those cases where toys were not used. 3. Behavior The relationship between age and behavior proved to be significant at the .05 level in both boys and girls. That is, with increase of age, play decreased and activity increased in boys while play increased and doing nothing decreased in girls. 4. Moving Status Totally, moving occurred more frequently in play than stationary status. Moving proved not to have a significant relationship with age, but it did Navel a significant relationship with sex at the .05 level. That is, moving tended to increase with the increase in age in both boys and girls, but not at a significant level. Boys moved significantly more than girls in all three age levels. 5. The Relationship between Educational Experience and Play-Form There was a tendency for children with longer preschool experience to engage in less solitary play and more group play than children who had less than one semester of preschool experience, but this difference was not statistically significant. 6. The Relationship between Social Maturity and Play-Form The high social maturity group engaged in less solitary play and more group play than the low social maturity group, but this was not a statistically significant difference. 7. Play Group Size Play group size was 2~10 children, but the majority of play groups consisted of 2~3 children. There was a tendency for play groups composed of 2 children to decrease with age and play groups composed of 3 children to increase with age. No significant difference was found between the sexes in play group size.

• Human Ecology Research
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• v.52 no.1
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• pp.11-19
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• 2014

The purpose of this study was to analyze the effect of perceived parental neglect and abuse and peer attachment on school life adjustment according to children's gender. A total of 2,264 5th graders from the second Korea Child-Adolescent Panel Survey participated. The results were as follows: First, the boys had higher parental neglect and abuse scores than the girls, while the girls had higher peer attachment scores and higher school life adjustment scores than the boys. Second, every sub-element of school life adjustment was significantly negatively correlated with parental neglect and abuse regardless of the children's gender. Every sub-element of school life adjustment was significantly positively correlated with the 'communication' and 'trust' sub-elements of peer attachment regardless of the children's gender. In the case of the boys, the 'study activity' and 'peer relation' sub-elements of school life adjustment were significantly negatively correlated with the 'alienation' sub-element of peer attachment. For the girls, every sub-element of school life adjustment was significantly negatively correlated with the alienation sub-element of peer attachment. Finally, the factors of 'parental neglect and abuse', and the peer attachment sub-elements of 'communication', and 'trust' significantly predicted the boys' school life adjustment, while for girls, the significant predictors were 'parental neglect and abuse', 'communication', 'trust', and 'alienation'.

• Journal of the Korean Dietetic Association
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• v.13 no.1
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• pp.1-14
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• 2007

The purpose of this study was to assess students’ preference on set menus served in school foodservice. Questionnaires were distributed to 4,050 students enrolled in 34 middle and high schools located in Seoul, Gyeonggi, and Gyeongnam provinces. The students were asked to assess their preferences on 78 set menus using a 5-point Likert-type scale(1 : very dislike - 5 : very like). Excluding responses with significant missing data, usable responses were 3,433. Data were analyzed with descriptive analysis, t-test, and one-way analysis of variance. There was no difference between middle and high school students in terms of set menu preferences. On the other hand, there was significant difference between boys' and girls' set menu preferences. Among the seven given set menu groups(rice and soup with side dishes, tangs, rice with toppings, fried rice, western foods, noodles.ddeokguk.dumpling soups, and bibimbaps), boys had higher preference scores for the rice and soup with side dishes, tangs, rice with toppings, and fried rice than that of girls. Fried rice set menus were chosen to be boys’ favorite menus while western food set menus were most preferred by the girls. Rice and soup with side dishes set menus were least preferred by both boys and girls.