• The Journal of Korean Physical Therapy
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• 제30권2호
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• pp.67-72
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• 2018

Purpose: The purpose of this study was to compare to aquatic treadmill and anti-gravity treadmill gait training to improve balance and gait abilities in stroke patients. Methods: All subjects were randomly divided into three groups where nine subjects were in the aquatic treadmill group, eight subjects in the anti-gravity treadmill group, and ten subjects in the control group. Subjects in the aquatic treadmill group and the anti-gravity treadmill group received gait training during 30 minutes, with 3 sessions per week for 4 weeks, and subjects in all groups received conventional physical therapy during 30 minutes, with 5 sessions per week for 4 weeks. All subjects were assessed with the Berg balance scale (BBS), timed up and go test (TUG) and 10-meter walk test (10MWT) pre and post intervention. Results: Results showed that BBS, TUG and 10MWT scores significantly improved post-intervention (p<0.05), and the control group also had significantly improved in all areas pre-post intervention (p<0.05). In addition, it has been confirmed that aquatic treadmill group and anti-gravity treadmill group had significantly improved in BBS, TUG and 10MWT scores compared with the control group (p<0.05). However, no significant difference was found in the comparison between the aquatic treadmill and the anti-gravity treadmill group. Conclusion: Finding of this study suggested that aquatic treadmill and anti-gravity treadmill improves balance and gait abilities in stroke patients.

• 한국산학기술학회논문지
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• 제20권7호
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• pp.228-235
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• 2019

이 연구의 목적은 만성발목불안정성 환자의 변형된 Brostrom 수술 후, 6주간의 Anti-gravity treadmill을 이용하여 조기체중부하를 포함하는 가속재활운동 프로그램이 발목관절의 통증지수와 발목 관절가동범위, 등속성 근기능, 동적 안정성에 어떠한 영향을 미치는지에 대하여 구명하고자 실시되었다. 연구대상자는 만성발목불안정성에 의해 변형된 Brostrom 수술을 받은 환자 12명을 대상으로 하였으며, 6주간의 가속재활운동 프로그램은 매일 60분씩 실시되었고 Anti-gravity treadmill 프로그램 또한 매일 15~30분간 실시되었다. 이 연구의 결과에서, 시각적 사상척도(VAS)를 이용한 주관적 통증지수는 가속재활운동 프로그램 적용 후, 유의하게 감소한 것으로 나타났으며(p<.001) 발목 관절가동범위 또한 가속재활운동 후, 배측 굴곡과 저측 굴곡, 내번, 외번 모두에서 유의하게 증가하였다(p<.05). 등속성 근기능은 가속재활운동 후, 내반력과 외반력 모두 $60^{\circ}/sec$(p<.001, p<.01)와 $180^{\circ}/sec$(p<.001)에서 유의하게 증가하였으며 건측에 대한 환측의 근결손율은 $60^{\circ}/sec$의 내반력(p<.01)과 외반력(p<.001), $180^{\circ}/sec$(p<.01)의 내반력에서 유의하게 감소하였고 외반력에서는 다소 감소하는 경향을 보였지만 통계적으로 유의한 차이는 보이지 않았다. 동적 안정성은 6주간의 가속재활운동 프로그램 적용 후, 유의하게 증가한 것으로 나타났다(p<.001). 이러한 결과는 6주간의 Anti-gravity treadmill을 이용하여 조기체중부하를 포함하는 가속재활운동 프로그램이 변형된 Brostrom 수술을 받은 만성발목불안정성 환자들의 통증과 발목 관절가동범위, 등속성 근기능, 동정 안정성에 긍정적인 효과가 있는 것으로 사료되며 또한 Anti-gravity treadmill을 이용한 조기체중부하의 재활운동 보다 안전하고 빠르게 발목의 안정성을 회복하여 일상생활 및 스포츠 현장으로의 빠른 복귀를 가능하게 할 것으로 사료된다.

• 한국항공우주학회지
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• 제43권6호
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• pp.548-556
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• 2015

F-22, F-16 및 F-15와 같은 고성능 전투기는 전투성능의 극대화를 위해 고기동성(highly maneuverable)을 보유하고 있다. 이로 인해 고기동 시에 조종사는 고중력가속도(high gravity acceleration)에 노출되고 피로도(fatigue)의 증가로 임무효율의 저하가 발생하며, 심할 경우에는 의식상실(Gravity-induced Loss Of Consciousness, GLOC)에 직면할 수 있다. 선진 항공업체에서는 조종사가 고중력가속도에 견딜 수 있는 내성을 향상시켜 의식상실에 진입하는 것을 방지하는 다양한 기술을 항공기에 적용하고 있다. 특히, 가속도방호복(Anti-G Suit)은 GLOC으로 인한 의식 상실을 방지할 수 있을 뿐만 아니라, 전투 기동 시에 조종사의 피로를 감소시킴으로써 임무성공률을 향상시킬 수 있다. 본 논문에서는 초음속 고등훈련기 모델을 기반으로 하여 고기동 시에 중력가속도의 증가에 따라 AGS에 최적의 공기압을 제공할 수 있는 제어알고리즘을 개발하고 검증하였다. 이러한 결과는 추후에 체계개발이 진행될 한국형전투기개발사업(Korean Fighter eXperimental, KF-X)에서 핵심기술을 개발하는데 기여하리라 기대한다.

• 한국산학기술학회논문지
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• 제17권8호
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• pp.46-54
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• 2016

본 연구의 목적은 16주간의 anti-gravity treadmill program을 적용한 가속재활운동이 반월상연골 봉합술 환자의 슬관절의 등속성 근기능 및 기능점수와 관절가동범위, 통증지수에 어떠한 영향을 미치는 지를 구명하고자 실시되었다. 연구대상자는 슬관절의 반월상연골 파열 진단을 받고 봉합술을 시행한 10명을 대상으로 하였다. 이 연구의 결과에서, 슬관절 등속성 신근력과 굴근력은 16주간의 anti-gravity treadmill program을 적용한 가속재활운동 후, $60^{\circ}/sec$와 $180^{\circ}/sec$에서 모두 유의하게 증가하였으며(p<.001, p<.01), 등속성 근결손율은 $60^{\circ}/sec$에서는 신근력과 굴근력, $180^{\circ}/sec$에서는 신근력이 유의하게 감소한 결과를 나타내었다(p<.01, p<.05). 슬관절 기능점수 또한 가속재활운동 후, 유의하게 증가하였으며(p<.001), 슬관절 가동범위도 가속재활운동 후, 신전의 경우 유의하게 감소하였고(p<.05), 굴곡에서는 유의하게 증가를 나타내었다(p<.01). 시각적사상척도(VAS)를 이용한 주관적 통증지수의 변화는 가속재활운동 후, 유의하게 감소한 결과를 나타내었다(p<.001). 이상의 결과에서, 16주간의 anti-gravity treadmill program을 적용한 가속재활운동은 슬관절의 반월상연골 봉합술 환자의 슬관절 등속성 근기능 및 기능점수와 관절가동범위, 통증지수에 긍정적 효과가 있는 것으로 생각되며 이러한 재활방법은 기존의 전통적 재활방법과 비교하여 보다 안전하고 과학적인 방법으로 빠른 스포츠 현장 및 일상생활로 복귀할 수 있는 가능성이 있는 것으로 사료된다.

• 대한화장품학회:학술대회논문집
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• 대한화장품학회 2003년도 IFSCC Conference Proceeding Book I
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• pp.672-685
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• 2003

Yew (Taxus cuspidata Sieb.) chose that grow as medicine, food, decorative plant in Korea's Kyong-Gi province surroundings. Extracts of yew extracted leaf of 250 g and stems of 300 g with 1,3-butylene glycol (1,3-BG), propylene glycol (PG) and water. As results, external appearance of leaf extract of yew was slightly brown clear extract. The pH was 5.3$\pm$0.5, and specific gravity was 1.012$\pm$0.05, and refractive index was 1.375$\pm$0.05. Also, appearance of stem's extract was slightly brown clear extract, and the pH was 5.4$\pm$0.5, and specific gravity was 1.016$\pm$0.05, and refractive index was 1.358$\pm$0.05. Oil of yew separated from seeds, and extracted polysaccharide high purity from fruits. As a result, specific gravity of oil was 0.987, and obtained 40％ of yield. Total polyphenols amount of yew extract is detected 0.563％ in leaves, 0.325％ in stems, whereas total tannins amount contained 0.054％ and 0.037％ each in leaves and stems. As effect in cosmetics, the anti-oxidative effect by DPPH method is 75.0％ in leaves, and stems was 64.0％. Collagen synthesis rate was shown high activity by 54.16％ in stem's extract, 33.18％ in leaves' extract. Also, PPE-inhibitory activities were 13.7％ and 23.5％ each in leaves and stems. Anti-inflammatory effect of yew seed oil displayed superior effect of 41 ％ than control. Polysaccharide's molecular weight that is gotten from fruits was 5$\times$10$^4$~ 3$\times$10$^{5}$ dalton, and got 20.0$\pm$5％ of yield.

• 대한화장품학회:학술대회논문집
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• 대한화장품학회 2003년도 IFSCC Conference Proceeding Book II
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• pp.343-356
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• 2003

Yew (Taxus cuspidata Sieb.) chose that grow as medicine, food, decorative plant in Korea's Kyong-Gi province surroundings. Extracts of yew extracted leaf of 250 g and stems of 300 g with 1,3-butylene glycol (1,3-BG), propylene glycol (PG) and water. As results, external appearance of leaf extract of yew was slightly brown clear extract. The pH was 5.3$\pm$0.5, and specific gravity was 1.012$\pm$0.05, and refractive index was 1.375$\pm$0.05. Also, appearance of stem's extract was slightly brown clear extract, and the pH was 5.4$\pm$0.5, and specific gravity was 1.016$\pm$0.05, and refractive index was 1.358$\pm$0.05. Oil of yew separated from seeds, and extracted polysaccharide high purity from fruits. As a result, specific gravity of oil was 0.987, and obtained 40% of yield. Total polyphenols amount of yew extract is detected 0.563% in leaves, 0.325% in stems, whereas total tannins amount contained 0.054% and 0.037% each in leaves and stems. As effect in cosmetics, the anti-oxidative effect by DPPH method is 75.0% in leaves, and stems was 64.0%. Collagen synthesis rate was shown high activity by 54.16% in stem's extract, 33.18% in leaves' extract. Also, PPE-inhibitory activities were 13.7% and 23.5% each in leaves and stems. Anti-inflammatory effect of yew seed oil displayed superior effect of 41 % than control. Polysaccharide's molecular weight that is gotten from fruits was 5$\times$10$^4$~3$\times$10$^{5}$ dalton, and got 20.0$\pm$5% of yield.

• 대한물리치료과학회지
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• 제8권2호
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• pp.1059-1064
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• 2001

This study is aimed at diagnosing transmutation aspect with the respective of hemiplegia patient's static adaptation of posture which is influenced by anti-gravity excercise, center of gravity shifting movement and segmental movement adaption of the legs and arms by key-point control in the process of Bobatli's treatment approach. The patients for the investigation of this study were selected as a total 17 patients who were doing the physical-therapy in Tae-gu Rehabilitation Center, and diagnosed as hemiplegia patients by Rehabilitation Medicine department in Kyung-buk University hospital. And also, there investigated into temporal transition that keep the attitude with one-leg standing on the ground concerning static attitude adaption on the basis of the before of anti-gravity movement and the after of 4-weeks movement. The findings of this study were as follows: With the respective the time to keep standing pose by one-leg at static attitude transmutation, affected side showed meaningful differences as a l.86/sec, 2.62/sec at 4 weeks later considering the before and after of this experiment.(p<0.01), non-affected side at the aspect of attitude keeping time, but there didn't showed meaningful differences statistically.

• 한국실내디자인학회논문집
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• 제34호
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• pp.3-9
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• 2002

Entering into the 21st century, digital culture and the innovation of media technology have drastically changed our understanding of the concept of space. Increased availability of information made possible by technological advancement has, directly or indirectly, contributed to the development of space design, which, in turn, offers a possibility for a new paradigm in space design. Given these fundamental changes, this study seeks to explore how to understand the expansion of the concept of space. In order to answer this question, this study investigates de-materialization tendency in modern architectural design such as transparency, anti-gravity, complexity and simultaneity of space. It examines the interaction-oriented nature of space among human, information and time. Finally, based on concepts such as new hyper-surface, which transcend the limitations of space and time, it explores new emerging trends in space design.

• Structural Engineering and Mechanics
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• 제21권5호
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• pp.591-620
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• 2005

A general analytical model for thin-walled composite beams with an arbitrary open/(or/and) closed cross section and arbitrary laminate stacking sequence i.e., symmetric, anti-symmetric as well as un-symmetric with respect to the mid plane of the laminate, is developed in the first paper. All the mechanical properties, mechanical centre of gravity and mechanical shear centre of the cross section are defined in the function of the geometry and the material properties of the section. A program "fungen" and "clprop" are developed in Fortran to compute all the mechanical properties and tested for various isotropic sections first and compared with the available results. The locations of mechanical centre of gravity and mechanical shear centre are given with respect to the fibre angle variation in composite beams. Variations of bending and torsional stiffness are shown to vary with respect to the fibre angle orientations.

• 대한한의학회지
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• 제19권1호
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• pp.410-418
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• 1998

From the ancient times, herbs, animals and minerals were used as natural medicine to cure human disease in diverse ways. One of the representative forms in oral intake is decoction. But medicinal decoction degenerates as time passes just as all foods do by the environmental factors, such as micro-organism, enzyme, light and the air. Nowadays, as medicinal decoctions are kept in bottles and retort pouch for longtime, some standard data for preservation is necessary. In order to measure the standard statistics for safe preservation, Youngsunjetongeum used to treat rheumatism, and gout 'were used. According to this experiment which measured pH, specific gravity, analgesic effect and anti-inflammatory effect, the results were as follows: 1. No remarkable change was found in pH and in the specific gravity of decoction. 2. As for the analgesic effect induced by acetic acid in mice, no remarkable decrease in its medicinal efficacy was found, until the 9th day, but it showed in its medicinal efficacy from the 11th day. 3. As for the resultant anti-inflammatory effect caused by vascular permeability, induced by carrageenin and acetic acid, no remarkable decrease in its medicinal efficacy was found until the 9th day, but showed decrease in its medicinal efficacy from 11th day. In conclusion, keeping the natural medicinal decoction more than 9 days should be avoided.