• The Journal of the Korea Contents Association
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• v.19 no.9
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• pp.558-566
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• 2019

The purpose of this study is to fine out whether melodic percussion playing group program affects the team cohesion and team efficacy of youth soccer players. In this study fifty seven middle school soccer players were participated. The participants were assigned to either a melodic percussion playing group or a control group. In order to identify the effectiveness of music program, assessments were conducted using the team cohesion and team efficacy scales before and after the program. The results of comparison analysis through t-test are as follows. First, in the posttest of team cohesion between groups, the experimental group showed a significant difference over the control group. In the pretest and posttest examinations within a experimental group, the group also showed a significant difference. Second, in the posttest of team efficacy between groups, the experimental group showed a significant difference over the control group. In the pretest and posttest examinations within a experimental group, the group also showed a significant difference. These results of this study suggest that melodic percussion playing group program may be an effective intervention tool to improve team cohesion and team efficacy of youth soccer players.

• Journal of Digital Contents Society
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• v.11 no.2
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• pp.129-134
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• 2010

Today's elementary schools emphasize practice- and learner-based computer courses. In this research, we found solutions to the above issues by adapting a demonstration/practice teaching method led by multiple teaching assistants, expanding lessons tailored to each student's own level. We chose fourth graders from three classes at Elementary School as the subject for this research. Through this research, we have analyzed the students' study results, self-efficacy, response and interest in the computer courses by examining three groups of students: the first group led by a teacher's demonstration and practice, the second group by a teaching assistant's demonstration and practice, and the last by multiple teaching assistants' demonstration and practice. As a result, we were able to show that a computer course taught by multiple teaching assistants will help not only induce an interest and motive for a mutual learning environment among the students, but also bring positive effects on the study results and self-efficacy.

• Korean Journal of Health Education and Promotion
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• v.24 no.3
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• pp.1-19
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• 2007

Objectives: The purpose of the this study was to evaluate lifestyle intervention program for the treatment of the metabolic syndrome. Methods: Subjects of this study were 700 adults with metabolic syndrome who took health examinations in health promotion centers of Korea Association of Health Promotion between May 1 and June 30, 2006. Subjects were randomly assigned to an experimental group and a comparison group. Participants in the experimental group received intensive 3-month lifestyle modification intervention and participants in the comparison group received minimal information on lifestyle modification. Pre test and Post test were carried out to evaluate the effectiveness of the intervention program. Results: After the intensive intervention on lifestyle modification(healthy diet, physical activity, moderate drinking, stress management, and smoking cessation), the levels of blood pressure, waist circumference, fasting blood glucose and triglycerides were significantly reduced for those in experimental group(P<0.001). For those in comparison group, the levels of blood pressure(P<0.001), waist circumference(P<0.001), and triglycerides(P<0.01) were significantly reduced after the intervention. No change in the levels of high-density lipoprotein cholesterol were observed in both groups. After 3-month intervention, the prevalence of metabolic syndrome was reduced to 35.7% in experimental group and 48.5% in comparison group. Conclusion: This study has demonstrated the efficacy of therapeutic lifestyle intervention for the management of metabolic syndrome.

• Journal of Families and Better Life
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• v.26 no.2
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• pp.13-24
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• 2008

The aim of the present study was to develop a cognitive-behavioral group therapy program for social anxiety in Korean adolescents and to examine its efficacy through pre-, post- and 2-year follow-up tests. The program included cognitive restructuring, exposure training and social skills training. KSAS-A and SASC-R were administered to 588 1st grade middle-school female students to assess their social anxiety levels. On the basis of double criteria procedure(top 10% scores on both scales), 59 students were selected initially. Individuals currently receiving clinical treatment were excluded. Finally, 40 students were selected and randomly assigned to either a treatment group or a wait-list control group. The program consisted of 12 weekly sessions, approximately 1.5-2 hours in duration. Whereas pre- and post-tests were administered to both groups, follow-up tests were administered to the treatment group only. The collected data were statistically analyzed through independent t-test and paired t-test. The results of the study were as follows: 1) At post-test students in the treatment group showed a very significant reduction in social anxiety and fear of negative evaluation by others in comparison with those in the wait-list group. 2) At post-test students in the treatment group showed a significant reduction in negative automatic thoughts in comparison with those in the wait-list group. 3) At post-test students in the treatment group showed a significant improvement in overall social skills in comparison with those in the wait-list group. 4) At post-test students in the wait-list group showed a significant increase in both social anxiety and negative automatic thoughts in comparison with those in the treatment group. 5) At 3-month, 1-year and 2-year follow-ups, the program's effectiveness was maintained.

• The Journal of the Korea Contents Association
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• v.19 no.12
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• pp.460-470
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• 2019

The purpose of this study was to examine the effect of cyber bullying prevention education on university students. The subjects were 64 college students and were assigned to experimental group or Comparison group. The experimental group(n = 33) was educated about cyberbullying coping strategies, and the Comparison group(n = 31) was educated about general cyberbullying We used the Basic Emotions Scale, Helplessness Scale, and Competence Scale to confirm the efficacy of the education. Results, Both the experimental group and the Comparison group showed less negative emotions and helplessness after the education than before the education. In the experimental group, competence was significantly higher than the Comparison group. These results suggest that the inclusion of coping strategy is more effective in increasing competence than cyber bullying prevention education. Finally, the limitations of this study were discussed along with suggestions for further research.

• Journal of Physiology & Pathology in Korean Medicine
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• v.22 no.1
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• pp.204-208
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• 2008

This study was performed to investigate the effect of the extracts from Injinoryng-San on liver injury patients induced by alcohol. Injinoryung-San was recorded the drug for jaundice at Hwang-Je-Nae-Kyung. Twenty-seven patients who have intaked alcohol above 40 g, every day, 5 years, twenty-seventy ages were selected. After take a written consent, we divide them into experimental groups and control groups by double blind test. Each groups was evaluated every 2 weeks(2,4,6 weeks). After 2 weeks, Injinoryung-San groups significantly decreased GGT in comparison with control groups(p<0.05). After 4 weeks, Injinoryung-San groups significantly decreased MCV, GGT in comparison with control groups(p<0,05). After 6 weeks, Injinoryung-San groups significantly decreased MCV in comparison with control groups(p<0.05). Reviewing these experimental results, it appears that extracts of Injinoryung-San have pharmaceutical efficacy in GGT, MCV on liver injury patients induced by alcohol. But it has not efficacy in AST, ALT. According to drinking alcohol has becomes social problems, we should effort to make efficacious oriental medicines on alcoholic hepatitis.

• Journal of the Ergonomics Society of Korea
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• v.34 no.2
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• pp.151-165
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• 2015

Objective: This study aims to develop and scientifically investigate the efficacy of the Spine S-curve Reactive Backrest that responds to the spine curvature of the user when seated, and maintains and enhances the natural S-curve of the lower back, thereby helping to relieve fatigue, correct posture and prevent spine deformities. Background: The focus of current development, design guidelines and/or standards for office chairs is mainly placed on the chair's dimensions, incline angle, adjusting features and lumbar support. Research and development was called for developing a chair backrest that maintains and improves the S-curve of the full spine. Method: The Spine S-curve Reactive Backrest was ergonomically designed to maintain correct posture and enhance user comfort. When leaned on, the backrest responds to the user's spine line and the whole lower back sits closely against the backrest, thereby aligning the user's lower back and backrest as one to maintain and improve the natural S-curve formation of the spine. In order to evaluate the efficacy of the newly designed chair (new design) and the comparison target (chair), five male college students of standard body type with normal spine curvature were selected as test subjects, and a motion analyzer and electromyography were utilized to measure S-curve and erector spinae muscle activity when seated. Results: The spine S-curve was better maintained and improved when sitting in the new design than in the comparison chair. Particularly notable was the greater displacement gap of the thoracic spine than the cervical spine, and also that of the lumbar more than the thoracic spine, with the increase of the backrest tilting angle. Furthermore, the electromyogram results showed the new design caused a lower fatigue level of the erector spinae muscles compared to the comparison chair, and also earned a higher preference in the subjective opinion results. Conclusion: The newly designed chair in this study responds to the user's spine curvature and maintains and enhances the lower back's natural S-curve, and thereby relieves fatigue, promotes better posture, and helps to prevent spine deformities better than existing office chairs. There is a need to widely introduce and supply this new design. Application: The new design is applicable to office and student chairs, and is expected to improve concentration and work efficiency.

• Korean Journal of Oriental Medicine
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• v.16 no.2
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• pp.167-179
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• 2010

Objective : The present study has been undertaken to investigate the preventive effects of Daekumeumja on fatty degeneration of liver and immunosuppression induced by alcohol in rats. Method : Except for the normal group, we fed rat on 25% alcohol for 55 days. And Daekumeumja(DK) extract was administrated for the same period. We measured the serum component in rat's blood, weight of internal organs, liver triglyceride contents, histomorphometry and histopathological observation of internal organs. Results : 1. In the change measurement of serum components, DK group(50 mg/kg, 200 mg/kg) showed significant decrease of AST, ALT, albumin, ALP and triglyceride in comparison with those of the alcohol control group. 2. In the change measurement of internal organ's weight, DK group(50 mg/kg, 200 mg/kg) showed significant increase of relative body weights of liver, thymus and spleen in comparison with those of the alcohol control group. 3. DK group(50 mg/kg, 200 mg/kg) showed significant decrease of hepatic triglyceride contents in comparison with those of the alcohol control group. 4. In histomorphometrical changes of liver, DK group(50 mg/kg, 200 mg/kg) showed significant decrease of numbers of hepatocytes occupied by over 10% lipid droplets, percentages of regions occupied by lipid droplets and mean diameters of hepatocytes in comparison with those of the alcohol control group. In histomorphometrical changes of thymus, DK group(50 mg/kg, 200 mg/kg) showed significant increase of lobular thickness and cortex thickness in comparison with those of the alcohol control group. In histomorphometrical changes of spleen, DK group(50 mg/kg, 200 mg/kg) showed significant increase of splenic thicknesses, numbers of white pulps and mean diameters of white pulps in comparison with those of the alcohol control group. 5. In histopathological changes of liver, DK group(50 mg/kg, 200 mg/kg) showed effective inhibition of severe fatty changes in comparison with those of the alcohol control group. In histopathological changes of thymus and spleen, DK group(50 mg/kg, 200 mg/kg) showed effective inhibition of atrophic changes in comparison with those of the alcohol control group. Conclusions : Reviewing these experimental results, it appears that Daekumeumja have pharmaceutical preventive efficacy on fatty degeneration of liver and immunosuppression induced by alcohol in rats.

• Journal of Gastric Cancer
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• v.18 no.4
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• pp.313-327
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• 2018

The prevalence of gastroesophageal reflux disease (GERD) is increasing in Korea, and physicians, including surgeons, have been focusing on its treatment. Indeed, in Korea, medical treatment using a proton pump inhibitor is the mainstream treatment for GERD, while awareness of surgical treatment is limited. Accordingly, to promote the understanding of surgical treatment for GERD, the Korean Anti-Reflux Surgery Study Group published the Evidence-Based Practice Guideline for the Surgical Treatment of GERD. The guideline consists of 2 sections: fundamental information such as the definition, symptoms, and diagnostic tools of GERD and a recommendation statement about its surgical treatment. The recommendations presented 5 debates regarding fundoplication: 1) comparison of the effectiveness of medical and surgical treatments, 2) effectiveness of surgical treatment in cases of refractory GERD, 3) effectiveness of surgical treatment of extraesophageal symptoms, 4) comparison of effectiveness between total and partial fundoplication, and 5) effectiveness of fundoplication in cases of hiatal hernia. The present guideline is the first to demonstrate the efficacy of the surgical treatment GERD in Korea.

• Korean Journal of Head & Neck Oncology
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• v.18 no.2
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• pp.179-183
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• 2002

Objective: A comparison of American Joint Committee on Cancer (AJCC) 1988 and 1997 nasopharyngeal carcinoma (NPC) classifications was made in terms of patient distribution and efficacy in predicting prognosis. Materials and Methods: Between Jan. 1981 and Dec. 1998, 60 cases of node negative nasopharyngeal carcinoma were retrospectively reviewed. The extent of disease each patients restaged according to the 4th and 5th AJCC system and Ho system, respectively. Results: The overall and disease free 5-year survival rates were 61.1% and 62.6%, respectively. Among T classifications of 4th AJCC, 5th AJCC and Ho staging system were not observed significantly different in disease-free survival rates, respectively. Conclusion: We observed a better patient distribution with AJCC 1997 comparing to AJCC 1988. The new classification also attained better statistical significances among stages in the overall survival and disease free survival rates was needed.