• Proceedings of the Korea Contents Association Conference
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• 2010.05a
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• pp.158-160
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• 2010

이 연구의 목적은 여성의 리듬운동 참가와 신체이미지 및 자아존중감의 관계를 규명하는데 있다. 본 연구는 2009년 서울 경기도 지역 2009년 서울 경기도지역에 소재하고 있는 스포츠센터, 일반동호회, 지역동호회, 댄스학원, 일반인을 대상으로 리듬운동에 참여하고 있는 20~50대 성인여성을 모집단으로 설정한 다음, 집락무선표집법을 이용하여 300명을 추출 하였다. 결론은 다음과 같다. 첫째, 리듬운동 참가여성은 비참가여성에 비해 신체이미지 및 자아존중감을 더 긍정적으로 평가한다. 둘째, 리듬운동 참가기간은 체형, 만족, 유연성요인에 영향을 미치고 있으며, 참가강도는 체형과 근력요인에 영향을 미친다. 셋째, 리듬운동참가기간은 자아존중감에 영향을 미치며, 참가빈도는 부적 영향을 미치는 것으로 나타났다. 넷째, 여성의 리듬운동 참가정도는 신체이미지 그리고 자아존중감에 인과적 영향을 미친다.

• Composites Research
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• v.17 no.3
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• pp.29-37
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• 2004

The aeroelastic stability analysis of composite bearingless rotors is investigated using a large deflection beam theory in hover. The bearingless rotor configuration consists of a single flexbeam with a wrap-around type torque tube and the pitch links located at the leading edge and trailing edge of the torque tube. The outboard main blade, flexbeam and torque tube are all assumed to be an elastic beam undergoing flap bending, lead-lag bending, elastic twist and axial deflections, which are discretized into beam finite elements. For the analysis of composite bearingless rotors, flexbeam is assumed to be a rectangular section made of laminate. Two-dimensional quasi-steady strip theory is used for aerodynamic computation. The finite element equations of motion for beams are obtained from Hamilton's principle. The p-k method is used to determine aeroelastic stability boundary. Numerical results are presented for selected bearingless rotor configurations based on the lay-up of laminae in the flexbeam and pitch links location. A systematic study is made to identify the importance of the stiffness coupling terms on aeroelastic stability for various fiber orientation and for different configuration.

• Child Health Nursing Research
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• v.12 no.1
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• pp.96-103
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• 2006

Purpose: This study was done to evaluate the effects of Yoga exercise on improvements in physical flexibility, posture management behavior, and self-efficacy in adolescents. Method: In this study, the design was a quasi-experimental research design with a one group pretest-posttest design. Participants were 32 students from one high school in Busan Metropolitan City, Korea, who did not engage in regular aerobic exercise and were willing to participate in this study. Yoga exercise was conducted for 70 minutes twice a week for 15 weeks. The data were collected from March 16 to June 22, 2004. The data were analyzed using descriptive statistics, and paired t-test with SPSS Win 12.0. Results: Trunk flexibility, posture management behavior, and self-efficacy significantly increased after the yoga exercise. Conclusion: Yoga exercise is recommended as a useful nursing intervention that could help prevent spinal-curvature-related disorders among adolescents.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.18 no.4 s.70
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• pp.385-393
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• 2005

This paper established the dynamic model of a flexible Timoshenko beam capable of geometrical nonlinearities subject to large overall motions by using the finite element method. Equations of motion are derived by using Hamilton principle and are formulated in terms of finite elements in which the nonlinear constraint equations are adjoined to the system using Lagrange multipliers. The Newmark direct integration method and the Newton-Raphson iteration are employed here for the numerical study which is to demonstrate the efficiency of the proposed formulation.

• The Journal of the Korea Contents Association
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• v.8 no.10
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• pp.301-308
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• 2008

The purpose of this study was to investigate the change of physical fitness, MDA, SOD after short-term weight reduction through exercise, food restriction and exhalation of sweat among Taekwondo players. The subjects ten male collage Taekwondo players with excellent practical skills, and more than seven years of experiences. They were asked to reduce about 5% of their body weight in seven days. Physical fitness levels were analyzed through grip strength, muscle endurance, flexibility, power, agility, balance, reaction time and MDA and SOD through blood test. The results of this study were as follows; First, there was no significant change in physical fitness due to short-term weight reduction in muscle strength, muscle endurance, flexibility, power, agility, balance and reaction time. Second, The change of MDA and SOD, resulting from short-term weight reduction did not show significant difference statistically. Therefore, the results of this study indicate that the Taekwondo players' short-term weight reduction of 5% of their body weight did not influence on their athletic performance and physiological capacity. Therefore athletes and coaches should endeavor to take exercise, dietary, and dehydration into consideration when conducting 5% of their body weight reduction in a week.

• Journal of Digital Convergence
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• v.11 no.1
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• pp.389-394
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• 2013

The purpose of this study was to investigate the effects of combined exercise program on fall-related physical fitness and pain response in elderly people. Fall-related physical fitness consisted of the 7 performance test items by Senior Fitness Test Manual. Pain response was measured by visual analog scale (VAS sore: 0=no pain, 10=extremely unsatisfactory). The combined exercise program was performed for about one hour per day, 4 times a week over a period of 10 weeks. As the result of this study, flexibility, agility, and right balance were significantly increased. The various characteristics of pain were considerably improved on pain symptom, leg pain when walking, pain symptom when sitting, and pain symptom in daily living. In conclusion, there has been a substantial improvement in 10 weeks by combined exercise program.

• Journal of Dental Rehabilitation and Applied Science
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• v.29 no.1
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• pp.1-9
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• 2013

This study examined the effects of the occlusal stability and a partial coverage mouthguard on physical fitness and motor capacity to determine the importance of the occlusal stability as a possible action mechanism of mouthguards on physical performance. Twenty physical education students were included for measurements of their handgrip strength, back strength, whole body reaction time, flexibility, sidestep test, stork stand test and jumping test according to the following 5 different occlusal conditions: mouth closed position without a mouthguard, with a full coverage mouthguard, with a right partial coverage mouthguard, with a left partial coverage mouthguard and with anterior partial mouthguard. The results revealed no significant difference in any of the measured physical factors between the occlusal conditions with and without a full-coverage mouthguard. On the other hand, a significant difference was observed in whole body reaction between the occlusal conditions with and without the partial coverage mouthguards. Therefore, isokinetic muscle tests on both knee joints and the Wingate anaerobic power test should be performed under the following five occlusal conditions: with or without full-coverage maxillary custom-made mouthguard, with a unilateral right or left partial-coverage maxillary mouthguard and with an anterior partial-coverage maxillary mouthguard. These results suggest that the partial coverage mouthguard had a short-term beneficial effect on agility rather than full coverage mouthguard.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.10
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• pp.313-323
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• 2018

This study was conducted to develop an individualized upper extremity exercise program for patients after mastectomy and evaluate its effectiveness. A nonequivalent control-group pretest-posttest design was used for this investigation. Research participants were patients with breast cancer who underwent mastectomy at two university hospitals (experimental group, n=17; control group, n=16). The experimental group received an individualized upper extremity exercise program three times a week for 7 weeks. Data were analyzed by the ${\chi}^2-test$, Fisher's exact test, Mann-Whitney U-test and Wilcoxon Signed Rank test using SPSS WIN 21.0. Inter-group comparison revealed significant differences between pre-test and post-test in hands behind the back, flexion, abduction, external rotation, internal rotation, and grip strength. Moreover, the experimental group showed significant improvements in hands behind the back, flexion, abduction, external rotation, internal rotation, and grip strength relative to the control. In conclusion, the individualized upper extremity exercise program was shown to be an effective intervention to improve physical functions in upper limbs and shoulders. Therefore, this program should be applied to patients after mastectomy in clinics since many patients have suffered from decreased physical functions in upper extremities.

• Journal of agricultural medicine and community health
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• v.44 no.3
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• pp.115-123
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• 2019

Objective: This study was conducted to examine the effects of a health promotion program on the health condition of rural elderly women implemented at primary health care posts using Korean Frailty Index. Methods: The research was designed a nonequivalent control group pretest-posttest setting. The participants in this study were 50 residents (intervention group: 25, control group: 25) selected from 4 villages 2 primary health care posts in J city Gyeongsangnam-do. The health promotion program was conducted at the primary health care posts twice a week for 12 weeks. This program consisted of basic exercises(Gukseondo + Theraband muscle strength training) and additional activities(including modified Theraband activity, rubber ball exercise, ball massage, nutrition class, singing class). Collected data were analyzed by descriptive statistics, paired t-test, and repeated measures ANOVA with SPSS 21.0. Results: Results of the health promotion program showed that the health conditions(measured by perceived health status, frailty score, upper/lower flexibility, maximum grip strength, dynamic balance test Timed Up and Go) of the experimental group(25) all statistical significantly improved. Conclusion: Study findings indicate that the health promotion program implemented at primary health care posts on rural elderly women is effective and can contribute to a developed health promotion program for local residents in the future.

• 한국노년학
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• v.29 no.3
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• pp.823-835
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• 2009

This study was designed to examine the effects of 12 weeks of circuit exercise on obesity, physical fitness and metabolic syndrome index in elderly obese women. 19 elderly obese women volunteered to participate in and completed the study. Participants went through their exercise program for 30 minutes per session and 3 sessions per week for 12 weeks. Lower(p<.001) and upper extremities strength(p<.05), upper(p<.05) and lower extremities flexibility(p<.01), agility & dynamic balance(p<.001), endurance exercise capacity(p<.05) were significantly increased after 12 weeks circuit training. Also, Body weight(p<.001), BMI(p<.001) & Metabolic syndrome index as waist circumference(p<.01), systolic BP(p<.05), TG(p<.001), HDL-C(p<.01), glucose(p<.05) were significantly differenced between pre and post. It was concluded that circuit exercise program has positive effects on body composition, physical fitness and metabolic syndrome index in elderly obese women.