• 한국음향학회지
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• 제26권4호
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• pp.173-181
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• 2007

본 논문에서는 음향 스펙트로그램을 이용하여 수중 이동표적의 위치를 추정하기 위한 방법을 연구하였다. 주파수와 시간의 2차원 평면으로 표현되는 스펙트로그램은 수중 운동체의 이동 정보를 제공한다. 음원과 수신 센서간의 거리가 충분히 멀 경우 스펙트로그램의 넓은 주파수에 걸쳐 발생하는 줄무늬들은 해수면 및 해저면에 의해 반사된 모드간의 간섭을 의미하고, 이때 최대 음압이 발생하는 줄무늬의 기울기는 음향 도파관 불변인자 ${\beta}$와 표적과 센서간의 거리에 의해 영향을 받는다. 2개 이상의 센서를 사용하여 이동하는 선박의 광대역 방사 소음을 측정한 경우 스펙트로그램에 나타나는 최대 음압이 발생하는 줄무늬의 기울기와 줄무늬가 주파수축에서 천이된 비율이 표적과 센서간의 거리에 따라 각각 다르게 나타난다. 두개의 센서를 두 정점으로 가정하여 표적에 이르는 거리의 비가 일정한 값을 가지면서 운동하는 점의 자취인 아폴로니오스의 원을 형성하고, 3개의 센서를 사용할 경우 두 개의 원이 서로 교점을 형성하는데, 이 교점의 좌표를 표적의 위치라 추정한다. 제안된 위치 추정 기법의 성능을 평가하기 위해 음파전달 프로그램을 이용한 시뮬레이션을 수행하였다.

• 대한통합의학회지
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• 제3권3호
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• pp.35-42
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• 2015

Purpose : The purpose of this study was to analyze the effects of aquatic rehabilitation program on gross motor function measure and balance in children with cerebral palsy. Methods : Subjects of this study, among the children who received the diagnosis cerebral palsy, for children total of 14 people have agreed to research. Cerebral palsy of 14 chilidren were applied to aquatic rehabilitation program. The training courses 30 minutes 3 times weekly, examined the changes in gross motor function ability to examine a total of 4-week course effectively. Result : The results of this study is First, 14 cerebral palsy appeared a significant difference in GMFM-C, GMFM-D and GMFM-E(p<.01). Secondly, 14 cerebral palsy appeared a significant difference appeared in the balance capability after the experiment(p<.01). Conclusion : It is possible that the application of aquatic rehabilitation program is to effective in improvement of gross motor function measure and balance ability to children with cerebral palsy.

• 대한통합의학회지
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• 제2권4호
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• pp.59-68
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• 2014

Purpose : The purpose of this study was to evaluate the effects of aquatic exercise program on Gross motor function and lower limb control of children with spastic cerebral palsy. Method : The subjects of this study are children with spastic cerebral palsy; 2 patients who agreed with this research, were picked up. Subjects received aquatic exercise training for 6 weeks, which consists of 2 times per week, 30 min of working pattern with floating device for each session. Gross motor function and lower limb control for walking were measured GMFM and SCALE. The intervention were compared by measuring before and after. Result : In GMFM and SCALE of both subjects, the intervention has been improved after the experiment compared to their original status before the intervention. Conclusion : Therefore, the Aquatic exercise is effective in improvement of to improve the gross motor function and lower limb control in chidren with spastic cerebral palsy.

• 한국보건간호학회지
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• 제14권1호
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• pp.122-130
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• 2000

This study was designed to investigate the effects of an aquatic exercise program on the physical function and depression among the community elderly. The subjects were 41 cases of aged over 65 who went to elderly college in Hawsung-Kun, Kyeongkee province. Seventeen of them were assigned to control group, while twenty four subjects to the experimental group. The period of data collection was from June., 1999 to November., 1999. The aquatic exercise program was developed by the author with the assistance of rehabilitation medicine doctor and physical therapist in the public health center. The program was carried out once a week for 6 months in regular swimming pool. Data were analyzed with t-test, $X^2$ test, ANCOVA. paired t-test using SAS 6.12. Results were obtained as follows: 1. The increments in the range of motion of the shoulder and knee joints in experimental group after exercise was significantly greater than those in the control group. 2. The physical pain score decreases significantly after the exercise in the experimental group only. 3. The experimental group revealed lower level of depression after exercise than the level before the exercise, whereas control group showed no significant changes in this level. These findings may indicate that the aquatic exercise program is effective in increasing the range of motion of shoulder and knee joints and also effective in decreasing pain, the level of depression. Accordingly. the aquatic exercise program can be adopted as an health promotion program for community elderly.

• 대한물리치료과학회지
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• 제20권1호
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• pp.89-98
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• 2013

Purpose : The purpose of this study was to investigate the effect of the aquatic exercise program on lower muscle strength, balance and gait activity on 12 weeks aquatic exercise program in the elderly women. Methods : The Subjects in this study were 20 aged 70s who were long-term residents admitted to elderly nursing home of S, Gyeongsangnam province. They performed aquatic exercise programs 60-minute sessions, 3 times a week for 12 weeks. The physical evaluation was used for measuring lower muscle strength, balance activity was used for measuring balance testing, and gait activity was used for measuring gait velocity and maximal step length evaluation. All data were analyzed by paired t-Test by SPSS(version18.0). P-values of <.05 were considered significant. Results : Lower extremity muscle strength, static dynamic balance and gait activity were significantly increased both in the exercise group and between groups. Conclusion : This study suggests that aquatic exercise program has an effect on lower extremity muscle strength, balance and gait activity of the elderly women. Therefore, it is considered as a safe and helpful self-support activity for the elderly people.

• 근관절건강학회지
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• 제11권2호
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• pp.127-135
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• 2004

Purpose: The purpose of this study was to explore the effects of aquatic exercise program on pain, flexibility, grip strength, self-care activities, helplessness in osteoarthritis patients. Methods: This program was carried out three times a week for 6 weeks by 3 groups of patients among 42 patients in regular swimming pool. Data were analysed by paired t-test for pre and post comparison. Results: There were significantly improved in pain flexibility, grip strength, self-care activities and helplessness after the program. However no significant differences were found in fatigue, difficulty of daily living activities and depression. Conclusion: Aquatic program was proved to be an effective nursing intervention to increase the self-care activities flexibility and grip strength, and to decrease pain and helplessness in osteoarthritis patients.

• 대한정형도수물리치료학회지
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• 제18권2호
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• pp.77-85
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• 2012

Background: This study has conducted an experiment on 14 disabled hemiplegia (female) introduced from D rehabilitation welfare center, sorted out subjects who will enthusiastically and sincerely follow the experiment for 8 weeks (before-after), and grouped them into control group (7 people), and aquatic exercise program group (7 people). After researching the effect of application of exercise program to hemiplegia on physical function and length of lower limb, we have come to the following conclusion. In case of hemiplegia, we have concluded that aquatic exercise program can aid muscle strengthening and lower limb since aquatic exercise program activates physical function and deep muscle, showing a positive influence on muscular strength and flexibility, and a significant influence on balance of lower limb. This result is considered to make people recognize the importance of rehabilitation exercise when making a program for daily life activity, injury prevention, and treatment for hemiplegia, and we believe that such reference will be proposed as a theoretical basis for application of aquatic exercise program to hemiplegia, and further be a great aid to similar studies.

• 근관절건강학회지
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• 제12권2호
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• pp.109-118
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• 2005

Purpose: The purpose of this study was to identify the effects of aquatic exercise program on pain, body weight, fatigue, flexibility in elderly women with osteoarthritis. Methods: The subjects of the study were sixty nine elderly women(age over 65years)who have an osteoarthritis. Aquatic exercise program consist of approximately one hour of exercise in water, two days per week, for six weeks. Data were gathered from September 2002 to August 2004 using a questionnaire and measuring body weight, flexibility of shoulder.. Data were analyzed with the SPSS Win 10.0 using frequency and paired t-test for differences between pre-exercise and post-exercise. Results: The results of this study are as follows: pain score, fatigue, body weight of post test were lower than those of pre test(t=5.587, p=0.000 ; t=3.394, p=0.001 ; t=4.664, p=0.000). Right and left flexibility scores of post test were better than those of pretest(Left: t=4.736, p=0.000 ; righrt: t=4.733, p=0.000). Conclusion: From these results, it is concluded that the aquatic exercise program can be effective in increasing physical and psychological function in elderly women.

• Journal of Korean Biological Nursing Science
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• 제13권3호
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• pp.276-282
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• 2011

Purpose: The aim of the present study was to investigate the effects of a aquatic exercise program on body mass index, body fat percentage and skeletal muscle mass, physical fitness using SFT (senior fitness test) and depression in elderly women. Methods: This study included 59 elderly women. Aquatics exercise program was performed three times per week for 12 weeks using rating of perceived exertion and body mass index, body fat percentage, skeletal muscle mass, physical fitness and depression were measured before and after exercise program. Statistical analysis was performed using t-test. Results: Body mass index (p=.002) and body fat percentage (p=.021) were significantly decreased after aquatic exercise program. Chair stand (p=.009), 2 minute step test (p<.001), back scratch (p<.001), and chair sit and reach (p<.001) were significantly increased after the aquatic exercise program. But, there was no significant differences in the depression. Conclusion: It is suggested the aquatic exercise program may play a significant role in improving body fat and physical fitness in the elderly women. However, as well as aquatic exercise program, sustained encouragement are required to improve physical and psychological traits.

• 근관절건강학회지
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• 제18권2호
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• pp.257-269
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• 2011

Purpose: The purpose of this study was to analyze the effect of aquatic exercise and to identify directions for future research. Methods: Twenty one articles from 2 sites of article database (1990-2010) and 6 from Korean nursing journals were reviewed. Results: There were 20 quasi experimental design and 1 randomized controlled design. Major subjects of research were older women with arthritis. The most common type of exercise was Kim (1994)'s form. The most frequent duration of exercise was over 6 weeks. Outcome measurement was classified to physical and psychosocial variables. For physical outcomes, pain release was found in 13 articles among 15 articles, muscle strength improvement in 5 articles among 10 articles, flexibility improvement in 5 articles among 9 articles, and balance improvement in 3 articles among 6 articles. For psychosocial outcomes, improvement of quality of life was found in 3 articles among 7 articles and self-efficacy improvement in 5 articles among 7 articles. Conclusion : The effect of aquatic exercise over 6 weeks improves the physical and psychosocial functions. It is suggested that meta analysis needs to be done to integrate the various results.