• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2021년도 제64차 하계학술대회논문집 29권2호
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• pp.309-310
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• 2021

본 연구는 건강 이상 감지를 위해 보폭 이상을 판단하는 신발과 어플리케이션을 연동하여 알츠하이머 등의 뇌손상으로 인한 보폭 이상을 미연에 예방하고 개선하는데 목적이 있다. 보행 이상 감지를 위해 보폭을 판단하는 건강진단신발은 측정부가 설치되며, 알츠하이머 등의 뇌손상에 의해 보폭이 줄어드는 경우 보폭이 좁아지는 것을 경고함으로써 장소와 시간에 구애받지 않고 신발착용자 스스로 보행 진단 및 교정이 이루어질 수 있다.

• Journal of Sport and Applied Science
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• 제2권1호
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• pp.1-10
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• 2018

Today, the population of cycle participants is consistently increasing. Cycling is becoming not only a form of physical exercise but also a form of tourism in which cycle activities are related to visiting a particular destination. With the perspective of participation sport tourism, the purpose of this study is to investigate how the level of cycle tourists' participation affects their quality of life. An online survey link was sent to cycle participants to collect data. Out of the total 337 respondents, a total of 226 samples were used for the final analysis, disregarding those that were found to be inadequate or unreliable. For data analysis, frequency analysis, reliability test, validity, correlations, and regressions were employed with SPSS 22.0. For our first result, we found that the level of cycle participation did not significantly affect the quality of physical life. Second, the level of cycle participation did not have significant effect on the quality of mental life. Third, the level of cycle participation behavior did not have a significant effect on the quality of social life. Fourth, the level of cycle participation behavior did not have a significant effect on the quality of environmental life. Conclusions and political implications are discussed.

• 한국의류산업학회지
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• 제21권1호
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• pp.75-87
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• 2019

The purpose of the study was to suggest a cycle wear top jersey improved in mobility. The study developed a new cycle wear with improvement in dissatisfaction factors by planning design, pattern and the functionality of fabric. Considering the amount of sweat and the necessities of compression part, the basic material, the additional compression material, and the mesh material were arranged differently according to areas. The assessment of the developed cycle wear was composed of wearing comfort evaluation by female cyclist, photo analysis and garment pressure evaluation. The developed cycle wear was evaluated and compared with the current cycle wear. As a result of wearing comfort evaluation, the developed cycle wear was evaluated as better than the existing ones in all part, particularly in the areas of reflection tape and materials, partial pressure, pocket size, and prevention of loss. Photo analysis was in agreement with the appearance evaluation of the participants. As a result of garment pressure evaluation, the front neck part was more comfortable and the upper arm, abdomen, and waist area showed higher pressure, so it partially supported the body. This study has significant meaning for developing a new cycle wear top, protecting the body and improving the exercise effect.

• 국제물리치료학회지
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• 제10권4호
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• pp.1873-1878
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• 2019

Background: Walking is a complex activity. The main components of walking include balance, coordination, and symmetrical posture. The characteristics of walking patterns of stroke patients include slow walking, measured by gait cycle and walking speed. This is an important factor that reflects post-stroke quality of life and walking ability. Objective: This study aimed to examine the effect of deep lumbar muscle stabilization exercise on the spatiotemporal walking ability of stroke patients. Design: Quasi-experial study Methods: The experiment was conducted 5 times per week for 4 weeks, with 30 minutes per session, on 10 subjects in the experimental group who performed the deep lumbar muscle stabilization exercise and 10 subjects in the control group who performed a regular exercise. Variables that represent the spatiotemporal walking ability (step length, stride length, step rate, and walking speed) were measured using GAITRrite before and after the experiment and were analyzed. Results: There was a significant difference in the pre- and post-exercise spatiotemporal walking ability between the two groups (p<.05). Furthermore, there was a significant difference in the step rate and walking speed between the two groups (p<.05). Conclusions: Deep lumbar muscle stabilization exercise is effective in improving the walking ability of stroke patients. Therefore, its application will help improve the spatiotemporal walking ability of stroke patients.

• The Journal of Korean Physical Therapy
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• 제36권1호
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• pp.27-32
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• 2024

Purpose: This study was conducted to verify the effect of applying a pressure biofeedback unit on walking ability and knee joint function while performing knee joint extensor strengthening exercises using resistance exercise equipment in total knee replacement (TKR) patients. Methods: This study was conducted on twelve patients receiving rehabilitation treatment after being admitted to a rehabilitation hospital post-TKR. Of these, six were allocated to a feedback group with a pressure biofeedback unit, and the other 6 were allocated to a control group without a pressure biofeedback unit. The subjects performed an exercise program for 45 minutes per session, five times a week, for two weeks. Walking ability and knee joint function were evaluated and analyzed before and after exercise. Results: The feedback group showed significantly better improvements in walking speed, gait cycle, step length on the non-operation side, time on the foot on the operation side, K-WOMAC stiffness, and K-WOMAC function than the control group (p<0.05). Conclusion: When strengthening the knee joint extensor muscles using resistance exercise equipment in TKR patients, the provision of a pressure biofeedback unit was found to improve walking ability and knee joint function by inducing concentric-eccentric contraction of the knee joint extensor muscles. Therefore, the study shows that exercise based on the provision of a pressure biofeedback unit should be considered when strengthening knee joint extensor muscles to improve the walking ability and knee joint function of TKR patients in clinical practice.

• 한국식품영양과학회지
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• 제13권4호
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• pp.437-443
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• 1984

포도당으로 perfusion한 쥐의 뒷다리 근육에 전기자극으로 근육운동을 유도하여 대사물의 농도변화를 측정한 결과는 아래와 같다. 근육내의 구연산회로대사물, 피루빅산, 젖산등의 농도가 상당히 증가하였고 알라닌, 글루타믹산, 아스파틱산등의 아미노산은 약간 증가하였고, 크레아틴 포스페이트, ATP의 농도가 급강하 한데 반하여 AMP와 암모니아의 농도가 증가하였다. 이 결과는 운동시에 에너지대사를 촉진시키는 구연산회로 대사물 일부는 아미노산으로부터 transamination 반응을 통하여 공급되고, 일부는 purine nucleotidecycle반응을 통하여 아스파틱산으로 공급되고 있음을 밝혔다.

• Journal of Ginseng Research
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• 제28권1호
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• pp.27-32
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• 2004

노인들의 고강도 유산소운동시 많은 산소요구량에 의하여 산화적인 스트레스가 증가하고, 결과적으로 함께 발생되는 활성산소는 MDA수준을 증가시킨다. 이렇게 노인들의 강도 높은 운동 중에 발생되는 활성산소에 홍삼복용이 어떠한 영향을 미치는 지를 알아보기 위하여 젊은이들과 비교하여 연구하였다. 노인들은 젊은이들과 함께 홍삼복용 전 후에 걸쳐 안정시, 운동직 후, 그리고 회복기 30분의 MDA수준이 유의하게 낮아진 것으로 나타났다. 따라서 홍삼복용은 젊은이들뿐만 아니라 노인들의 축적된 과산화지질을 제거하거나 과산화지질의 생성을 억제하는 항산화 효과가 있음을 시사한다.

• 운동영양학회지
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• 제24권3호
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• pp.7-12
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• 2020

[Purpose] This study was performed to investigate the acid-base and ion balance at rest and after exercise in healthy males under normoxia, moderate hypoxia, and severe hypoxia. [Methods] Ten healthy Korean males completed three different trials on different days, comprising exercise under normoxia (F_iO₂ = 20.9%, N trial), moderate hypoxia (F_iO₂ = 16.5%, MH trial), and severe hypoxia (F_iO₂ = 12.8%, SH trial). They undertook endurance exercise for 30 min on a cycle ergometer at the same relative exercise intensity equivalent to 80% maximal heart rate under all conditions. Capillary blood samples were obtained to determine acid-base and ion balance at rest and after exercise. [Results] Exercise-induced blood lactate elevations were significantly increased as hypoxic conditions became more severe; SH > MH > N trials (P = 0.003). After exercise, blood glucose levels were significantly higher in the SH trial than in the N and MH trials (P = 0.001). Capillary oxygen saturation (S_CO₂) levels were significantly lowered as hypoxic conditions became more severe; SH > MH > N trials (P < 0.001). The pH levels were significantly lower in the MH trial than that in the N trial (P = 0.010). Moreover, H_CO_3^- levels were significantly lower in the SH trial than in the N trial, with significant interaction (P = 0.003). There were no significant differences in blood Na⁺, K⁺, and Ca²⁺ levels between the trials. [Conclusion] MH and SH trials induced greater differences in glucose, lactate, S_CO₂, pH, and HCO_3^- levels in capillary blood compared to the N trial. Additionally, lactate, S_CO₂, and HCO_3^- levels showed greater changes in the SH trial than in the MH trial. However, there were no significant differences in Na⁺, K⁺, and Ca²⁺ levels in MH and SH trials compared to the N trial.

• 한국시스템다이내믹스연구
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• 제6권1호
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• pp.17-32
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• 2005

An agricultural commodity production cycle model consisting of corn, beef, and dairy sectors was constructed for the purpose of exploring the propagating effects of large-scale disruptive events. In an initial proof-of-concept exercise, we considered an agricultural disruption scenario in which foot-and-mouth disease (FMD) is introduced into the U.S., causing a large-scale outbreak of the disease in both beef and dairy cattle. The magnitude of disruption to the beef and dairy sectors are presented under the existing W response policy and then improvements under two alternative policies are shown.

• Tuberculosis and Respiratory Diseases
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• 제50권1호
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• pp.42-51
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• 2001

연구배경 : 심폐운동검사를 호흡곤란이나 운동제한의 주원인 감별을 위한 진단적 목적으로 이용시, 사용한 진단 알고리즘과 운동방법에 따른 분석결과에 차이가 있는지를 알아보고, 차이가 있다면 그 원인은 무엇인지 알아보고자 하였다. 연구방법 : 안정시 폐기능검사상 이상이 있는 만성폐질환자 66명, 운동시 호흡곤란을 호소하나 안정시 폐기능검사상 이상이 없는 환자 48명을 대상으로 자전거를 이용하여 증상 제한적 최대운동을 시행하고 Wasserman 등과 Eschenbacher 등이 제안한 진단 알고리즘을 이용 하여 분석하여 그 결과를 비교하였고, 건강한 의과대 32명을 대상으로 자전거와 답차를 이용하여 증상 제한적 최대운동을 시행한 후 Eschenbacher 등이 제안한 진단 알고리즘으로 분석후 운동방법에 따른 분석결과의 차이를 비교하였다. 연구결과 : 1) 호흡곤란을 주증상으로 호소하고 안정시 폐기능 검사상 미국흉부학회 기준에 부합하는 폐기능손상을 보이는 환자중 최근 2개월이내에 증상이 악화되지 않은 환자 66명을 대상으로 증상제한적 최대운동후 Wasserman 방식과 Eschenbacher 방식으로 해석후 비교하여 보았을 때 42명에서 일치하여 63.6%의 일치율을 보였다. 폐기능검사소견에 따라 구분하여 보면, 폐쇄성장애를 보인 경우는 43명중 30명으로 69.8%, 제한성장애를 보인 경우 8명중 2명으로 25%, 혼합성장애를 보인 경우 15명 중 10명으로 66.7%의 일치율을 보였다. 2) 임상적으로 심장질환은 의심되지 않으나 활동시 호흡곤란을 호소하고, 안정시 폐활량측정에서 정상소견을 보이는 48명을 대상으로 자전거를 이용한 운동 후 두 방식으로 분석 비교하였을 때 30명에서 일치하여 일치율은 60.4%이었다. 3) 호흡곤란 등의 호흡기계증상이 없고 안정시 폐활량검사상 정상인 건강한 의과대학 남학생 32명을 대상으로 자전거와 답차를 이용한 운동후 Eschenbacher 방식으로 해석한 결과 운동방법에 따른 일치율은 25% 이었다. 결론 : 이와 같은 결과로 진단 알고리즘 혹은 운동방법에 따라 결과가 차이가 있음을 알 수 있었고, 심폐운동검사를 호흡곤란이나 운동제한의 주원인 감별을 위한 진단적 목적으로 이용하기 위해서는 한국성인에 적용할 수 있는 운동방법에 따른 진단 알고리즘을 확립하는 것이 필요하다고 여겨진다.