• Journal of Life Science
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• v.18 no.7
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• pp.986-991
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• 2008

The purpose of this study was to investigate the effect of Taekwondo and calcium intake on physique, growth hormone and IGF-1 in elementary school male students. 24 subjects who the fourth grade and Taekwondo black belt ($1{\sim}2$ poom) were classified into three groups; Taekwodo +calcium intake group (8), Taekwondo group (8) and control group (8). The period of Taekwondo was 12 weeks, 5 times a week and each time 50 minutes with RPE ($7{\sim}15$) for intensity were treated and subjects were given calcium at 750 mg of pill after dinner a day during the 12 weeks. The conclusions of this study are as follows; In the comparison within each group, three groups all significantly increased in body height but in the comparison between groups, A and B groups were more significantly increased in body height than C. C significantly decreased in growth hormone and in the comparison between groups, A and B groups were more significantly increased in growth hormone than C. In the comparison within each group, A and B significantly increased in IGF-1 and in the comparison between groups, A and B groups were more significantly increased in IGF-1 than C. It is considered that Taekwondo and calcium intake give effects to body height by increasing growth hormone and IGF-1. It is necessary to continue the study, because the study results of growth hormone and IGF-1 are various by training method, intensity, nutrition.

• Korean Journal of Food Science and Technology
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• v.39 no.1
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• pp.20-24
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• 2007

The effects of phenolic acids on inhibition of browning by the Maillard reaction were investigated with a glucose-glutamic acid model for doenjang with citric acid as the antibrowning agent and phenolic acid as its synergist. Five phenolic acids, cinnamic, coumaric, caffeic, hydroxybenzoic, and protocatechuic acids, were used. In order to investigate the antibrowning capacity, 0.1M glucose, 0.1M glutamic acid, 50mM citric acid, and 1mM phenolic acid were dissolved in 1M phosphate buffer (pH 7.0), heated at $50^{\circ}C$ for 24hr in the presence of 0.2mM $FeCl_{2}$, and stored at $4^{\circ}C$ or $30^{\circ}C$ for four weeks. Phenolic acid addition more efficiently inhibited browning during storage at $30^{\circ}C$ than at $4^{\circ}C$, without changes in pH. Hydroxybenzoic acid was the most efficient and increased the antibrowning capacity by 13% compared to sample without phenolic acids. Although caffeic and protocatechuic acids inhibited most the formation of 3-deoxyglucosone or fluorescence, they increased browning by forming colored complexes between two hydroxy groups of phenolic acids and iron ions. Hydroxybenzoic acid will be able to be a useful synergist of citric acid, an antibrowning agent in doenjang, since it is permitted for doenjang.

• Journal of the Korean Applied Science and Technology
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• v.35 no.1
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• pp.306-315
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• 2018

The purpose of this study was to investigate the effects of football talents program on body composition, fitness, self-control and self-efficacy in elementary school students The subjects were eighty males students volunteers, composed of the lower group (n=40; 1-3th grade) and senior group (n=40; 4-6th grade). The test data were analyzed by paired t-test, independent t-test and two-way repeated measures ANOVA. The alpha level of p<0.05 was set for all tests of significance. The results of the study in the both group were as follows; The muscle mass in the body composition had significantly increased, and there was a significant difference between groups. Body fat mass had significantly decreased. Fitness(cardiorespiratory endurance, muscular strength, flexibility, power and agility) had significantly increased, cardiorespiratory endurance, muscular strength, and power was a significant difference between groups. Self-control and self-efficacy had increased significantly in both groups. Therefore, the football talents program had a positive effects on body composition and physical fitness levels of elementary school students. And it seems to be effective in increasing self-control and self-efficacy.

• Journal of The Korean Association of Information Education
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• v.24 no.3
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• pp.255-263
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• 2020

The purpose of this study is to find out the perception of parents in order to develop a software education program for elementary students convergence with English. A survey was administered to 120 parents asking perceptions about SW education in schools and preferences about English-SW convergence programs for their elementary school children. The results shows that the parents think the current 17 hours of SW education provided at elementary schools is not enough and also they hoped the education started at an earlier grade than the current 5th·6th graders. Most parents perceived English is helpful in SW education and answered strongly for the need of English-SW convergence programs. A two-week program with the ratio of 6(SW):4(English) was the most preferred according to the study. As for regional differences, the parents in Seoul and Gyeonggi Province wanted SW education as after-school programs in elementary schools whereas, parents in Chungcheong Province expected SW education programs be provided from near-by universities. It is hoped that with the results of this study various English-SW education programs are developed and operated.

• Journal of the Korean Society of Food Science and Nutrition
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• v.33 no.4
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• pp.711-715
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• 2004

The stability of 80% ethanol-soluble pigments from Monasus purpureus CBS 281.34 was investigated according to storage temperature, pH and addition of organic acid. Also, the stability of ethanol-soluble pigment in aqueous system was examined after the addition of distilled water in the range of 0∼80% during the storage at 1$0^{\circ}C$ and 2$0^{\circ}C$ for 4 weeks with water soluble pigment. The heat stability was the highest (9.74%) when the 80% ethanol-soluble pigments were stored at 1$0^{\circ}C$ for 4 weeks. However, the 80% ethanol-soluble pigments stored at 6$0^{\circ}C$ and 8$0^{\circ}C$ for 24 h and 12 h greatly decreased by 23.06% and 30.36%, respectively. Although the 80% ethanol-soluble pigments were stable in the range of pH 4∼8, the degradation rate of pigment increased at pH 2 and PH 10.80% ethanol extract was adjusted to PH 4 by adding organic acids. The rate of pigment degradation was not different from control for 4 weeks. Red pigment was stable in the treatment of organic acids. And the stability of ethanol-soluble pigment in aqueous system was gradually decreased as the pigment content and storage time increased. Additionally, the stability of ethanol-soluble pigment was higher at 1$0^{\circ}C$ than at 2$0^{\circ}C$.

• Journal of Life Science
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• v.22 no.1
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• pp.92-97
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• 2012

The purpose of this study was to analyze the effects of aerobic exercise and a protein diet on serum lipid profiles, liver function, and immunoglobulin levels in rats. The subjects, 24 male Sprague-Dawley rats, were grouped into an exercise with protein diet group (A, n=6), a protein diet group (B, n=6), an exercise group (C, n=6), and a control group (D, n=6). The exercise with protein group trained for 4 weeks (20-30 min/day, speed at 14~17 m/min) and was given a 40% protein diet for 4 weeks. The variables of serum lipid profiles, liver function, and immunoglobulin levels were measured in all of the subjects at the end of the 4 weeks of treadmill exercise. Serum TC and LDL-C levels were significantly decreased in the exercise with protein diet group compared to the other groups and serum HDL-C, GOP, and IgG were significantly higher than in the other groups. However, no significant differences were found for the IgA and IgM levels. In conclusion, aerobic exercise with a protein diet was effective in improving serum lipid profiles, liver function, and immunoglobulin.

• Sleep Medicine and Psychophysiology
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• v.24 no.2
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• pp.118-123
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• 2017

Central sleep apnea (CSA) is a highly prevalent comorbidity in patients with heart failure and may present in 25 to 40 percent of heart failure patients. Continuous positive airway pressure (CPAP) is the primary therapeutic option and effective in treatment of obstructive sleep apnea (OSA). In heart failure patients with CSA, several trials of CPAP showed a number of positive effects in heart failure treatment. A 58-year-old male visited the hospital because of dyspnea and he was diagnosed as heart failure with ischemic heart disease. He underwent coronary angiography and received percutaneous coronary intervention due to stenosis at the middle of left anterior descending coronary artery. However, dyspnea was not completely improved after treatment with percutaneous coronary intervention. The patient also experienced snoring and sleep apnea which worsened with symptom of dyspnea in the recent year. We suspected CSA and the patient underwent polysomnography to confirm whether sleep apnea was present. During the polysomnography, CSA with Cheyne-Stokes respiration (CSR) was observed and apnea-hypopnea index was 45.9/hr. The patient was treated with CPAP. After CPAP treatment, hypoxemia and CSA were resolved and dyspnea was improved with reducing NYHA class. We report a case successfully treated with clinical improvement by presuming CSA in a patient with heart failure.

• Journal of Korean Academy of Nursing
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• v.30 no.2
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• pp.342-353
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• 2000

This study was performed to examine the effect of a 7-week comprehensive health promotion program for improving pain, depression, and disability by employing a quasi-experimental design. The subjects were regular out-patients of a RA aclinic in an University Hospital in Inchon from November 11. 1998 to December 24. 1998. The Experimental group included 18 patients who participated in an arthritis health promotion program, and the control group included 18 patients who did not. The 7-week health promotion program, which had the objective to enhance health promoting skills, was provided to patients. The effects of this program on the patients' pain, depression, and functional disability were examined. According to the study results, a significant group difference was found on these dependent variables (Hotelling's T =.30, F=3.11, p=.04). To examine which dependent variables had significant effects, one-way ANOVAs were performed. There were significant group differences in pain (F=4.35, p=.05) and in depression (F=4.22, p=.05) However, no significant group differences on functional disability (F=.04, p=.84) were found. Conclusively, the arthritis health promotion program, which was designed to enhance 11 health promoting skills, can be evaluated as successfully achieving the ultimate goal of enhancing the patients' quality of life. It can also be contended that the improvement of the patients' quality of life was enabled by relieving pain and reducing depression.

• The Journal of the Korea Contents Association
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• v.11 no.3
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• pp.477-486
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• 2011

In this paper, I had tried to analyze the relationship between the time assigned for computer usage and weakening eyesight. First of all, students classified by gender, school year, eyesight, and wearing glasses along demographic characters took part in a poll, and The questionnaire included questions about computer time, factors of weakening eyesight, and purpose of computer use. The finding in this analysis composed of a cross-tabulations between annual eyesight change and the factors to change their eyesight is that 63.6 % of 165 students participated in this survey weakened their eyesight within a year. To show a correlation between computer usage duration and worsening eyesight in this paper, regression analysis indicated weakened vision by computer usage duration per day and week instead of a year. In addition, according to the analysis between computer usage duration and weakened vision for the people who wear glasses or not trough Independent-Samples T test, weakened vision was shown in computer usage duration per day and week, but not shown in the duration by the year. Therefore, weakening vision was also worse for the people who didn't wear glasses than the others. This study indicated 24..5% of teenagers had poor eyesight by using their computer. According to the frequency analysis on purposes of computer usage, the biggest purpose accounting for 36.4% of the total was the computer usage as a game consol, and the computer as a learning tool was the next biggest purpose at 32.1%. This paper showed the correlation between computer usage time and a factor of weakened eyesight through an analysis of the factor. Therefore, schoolchildren's parents should be more interested in their computer usage.

• Journal of Life Science
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• v.24 no.4
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• pp.447-453
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• 2014

In this study, a test for the immunity control effect by ethanolic extract of Eurya emarginata (EE-70E) on NC/Nga mice as the models for atopic dermatitis was conducted with the following results. Atopic dermatitis in NC/Nga mice was induced by repeated application of 1-chloro-2,4-dinitrobenzene (DNCB) for 5 weeks. Mice were orally administered EE-70E or terfenadine, positive control for 3 weeks. Scratching behavior, clinical skin severity, and the levels of IL-4, L-13, IL-17, total serum IgG1, and total serum IgE were measured. The oral administration with EE-70E doses of 200 or 400 mg/kg significantly decreased scratching behavior scores and clinical skin severity score in a dose-dependent manner (p<0.05). The administration of EE-70E at 400 mg/kg significantly decreased cytokines within the blood serum, that is, IL-4, L-13, and IL-17 compared to the control group (p<0.05). The level of blood histamine was statistically significantly decreased. Administration of EE-70E at 400 mg/kg significantly decreased the levels of total serum IgE (p<0.05). The above results indicated that EE-70E was effective in improving the symptoms of atopic dermatitis through various immunity control mechanisms.