Knee Joint Isokinetic Rehabilitation Exercise Equipment Usability Evaluation

이병권,Seung-Hwa Jung,Hye-Ri Shinb,한동욱,Chang-Young Kim,Jong-Min Woo,박대성 물리치료재활과학회 2022 Physical therapy rehabilitation science Vol.11 No.4

Objective: In this study, the test-retest reliability and validity were presented to evaluate the usability of isokinetic rehabilitation equipment for the knee joint. Design: Cross-sectional design, reliability & validity study. Methods: Thirty healthy adults participated in the study. A CSMI dynamometer was used as a standardized measuring device to present the validity of the equipment. It was measured based on the dominant leg. The average peak torque value was selected as the measurement variable. After the measurement, a questionnaire was conducted on safety, satisfaction, and performance through the usability evaluation questionnaire. Results: The knee joint isokinetic rehabilitation equipment showed high reliability with Intraclass Correlations Coefficients (ICC) =0.883∼0.956. In order to check the validity of the equipment, the 95% confidence interval of the mean difference limit was confirmed by the Bland & Altman plot. As a result, all three angular velocities showed a smaller confidence interval in the flexion than in extension. There were less than 10 plots that were not included in 2 Standard Deviation (SD) between all measurements. As a result of the usability evaluation questionnaire, the average of the safety domain(4.9±0.4), satisfaction domain(4.1±0.8), performance domain(4.3±0.8). Conclusions: If the product is improved by supplementing the items identified in the usability evaluation process, it is judged that it can be used as a useful device in various knee joint rehabilitation fields.

사물인터넷과 인공지능을 활용한 환경소음 관리 동향

이병권 한국소음진동공학회 2021 소음 진동 Vol.31 No.2

탐구활동 개방도에 따른 학생들의 탐구수행능력 분석

이병권,이상권 한국현장과학교육학회 2017 현장과학교육 Vol.11 No.3

The purpose of this study was to investigate how the ability of inquiry performance differed on the characteristics of individual students by academic achievement, mental capacity, scientific attitude, and scientific inquiry ability according to the degree of openness of inquiry activity. Five students with different academic achievement were selected from first year students of autonomous private high schools. Mental capacity, scientific attitude and scientific inquiry ability test were conducted to analyze the characteristics of individual students and to conduct the openness level 1 and level 2 experiment. In order to investigate inquiry performance ability, the inquiry activity observation checklist was first prepared. Base on this, the concrete evaluation scales were developed in the openness level 1 and level 2 experiment, respectively. As a result of analysis of the ability to perform inquiry according to the level of openness, the higher the level of openness, the lower the ability to perform the inquiry. At all levels of the openness, the higher the academic achievement, the higher the ability to perform inquiry. For students with high academic achievement, draw conclusion was better performed in the openness level 1 and hypothesis setting and draw conclusion in the openness level 2. In analysis of inquiry process elements according to the openness, it was found that draw conclusion was difficult in the openness level 1 and that experimental design and data interpretation were the most difficult in the openness level 2. Mental capacity was generally related to inquiry performance ability but science attitude was not related. 이 연구는 탐구활동의 개방도를 달리하였을 때 학업성취도, 정신용량, 과학태도, 과학탐구능력에 의한 개별 학생들의 특성에 따라 탐구수행능력이 어떻게 다르게 나타나는지를 알아보고자 하였다. 자율형 사립고등학교의 1학년 학생 중에서 학업성취도가 다른 5명의 학생을 선정하여 정신용량과 과학태도 및 과학탐구능력 검사를 실시하여 개별 학생들의 특성을 분석하였고 개방도 1수준의 탐구실험을 실시한 후 2수준의 탐구실험을 실시하였다. 탐구수행능력을 알아보기 위해 먼저 탐구활동 관찰 점검표를 작성하였고, 이를 바탕으로 개방도 1수준과 2수준의 탐구활동에 대한 구체적 평가 척도를 개발하였다. 개방도 수준에 따른 탐구수행능력을 분석한 결과, 개방도 수준이 높을수록 탐구수행능력이 낮게 나타났으며, 개방도 1수준과 2수준 모두 학업성취도가 높을수록 탐구수행능력이 더 높게 나타났다. 학업성취도가 높을수록 개방도 1수준에서는 결론도출을, 2수준에서는 가설설정과 결론도출을 더 잘 수행하였다. 개방도에 따른 탐구과정 요소별 분석 결과, 개방도 1수준에서는 결론도출을 어려워하였으며, 개방도 2수준에서는 실험설계와 자료해석을 가장 어려워하는 것으로 나타났다. 정신용량은 탐구수행능력과 연관성이 있었지만 과학태도는 거의 연관성이 없었다.

유변학적 측면에서의 경동맥협착

이병권 대한뇌졸중학회 2008 Journal of stroke Vol.10 No.2

헌혈이 헌혈자의 혈유변학적 지표에 미치는 영향

이병권 대한수혈학회 2018 大韓輸血學會誌 Vol.29 No.3

The circulatory system is closely related to the inter-relationship between the anatomy of the heart and blood vessels, and the fluid dynamic properties of blood. The physical properties of blood, which affect blood flow, are called hemorheologic factors. Hemorheologic factors, such as blood viscosity and erythrocyte aggregation, are influenced mainly by hematocrit. A higher hematocrit level results in an increase in blood viscosity, erythrocyte aggregation, which impedes the circulation itself, and tissue oxygenation. An excess of serum ferritin causes injury to vascular endothelial cells and erythrocytes via oxygen free radicals. In addition, an excess of blood can aggravatee the adverse effects of the hemorheologic parameters and induce atherogenesis, microcirculatory disturbances, and major cardiovascular events. A preventive and therapeutic approach with a phlebotomy or blood donation has been stimulated by the knowledge that blood loss, such as regular donations, is associated with significant decreases in key hemorheologic variables, including blood viscosity, erythrocyte aggregation, hematocrit, and fibrinogen. Major cardiovascular events have been improved in regular blood donors by improving blood flow and microcirculation by decreasing the level of oxidative stress, improving the hemorheologic parameters, and reducing the serum ferritin level. Confirmation of the positive preventive and therapeutic effects of blood donations on cardiovascular disease by a well-designed and well-controlled Cohort study may be good news to patients with cardiovascular disease or at risk of these diseases, as well as patients who require a transfusion.

[고분자 관련 연구원 소개] 대한민국 고분자 재료 연구의 50년을 함께 한 한국과학기술연구원의 과거, 현재 그리고 미래

이병권 한국고분자학회 2016 고분자 과학과 기술 Vol.27 No.5

만성 뇌졸중 환자들의 Step Test의 상대적·절대적 신뢰도와 타당도

이병권,최현수,안승헌,Lee, Byoungkwon,Choi, Hyunsoo,An, Seungheon 대한통합의학회 2017 대한통합의학회지 Vol.5 No.1

Purpose : To examine the relative absolute reliability and validity of step test (ST) scores in subjects with chronic stroke. Method : A total of 27 stroke patients, participated in the study. A relative reliability index (intraclass correlation coefficient, ICC) was used to examine the level of agreement of inter-rater test-retest reliability for ST score. Absolute reliability indices, including the standard error of measurement(SEM) and the minimal detectable change (MDC), and limits of agreement by Bland and Altman analysis. The validity was demonstrated by spearman correlation of ST score with 10 m Walk Test (10mWT), Fugl-Meyer Assessment-Lower/Extremity (FMA-L/E)-total score, Berg Balance Scale (BBS)-total score. Result : An excellent inter-rater reliability in ST scores was found (paretic, ICC=0.993~0.996; nonparetic, ICC=0.982~0.991). In addition, excellent test-retest reliability was found (paretic, ICC=0.992; nonparetic, ICC=0.967). It all showed acceptable SEM of the ST score as paretic and nonparetic were 0.22 and 0.46 respectively (average score <10 %), and the MDC of the paretic and nonparetic were 0.61 and 1.27 respectively (possible highest score <20 %). indicating that measures had a small and acceptable measurement error. The ST score of paretic and nonparetic were also found to be significantly associated with 10MWT (r=0.77~0.79), FMA-LE scores (r=0.73~0.81) and BBS scores (r=0.72~0.76). Conclusion : The ST showed highly sufficient Inter-rater test-retest agreement and validity and acceptable measurement errors caused by due to chance variation in measurement. It also can be used by clinicians and researchers to assess the balance and mobility performance and monitor functional change in chronic stroke patients.

5G 기반 터널 내 교통사고 대응 서비스 개발 및 실증

이병권,김상민 한국재난정보학회 2018 한국재난정보학회 학술대회 Vol.2018 No.11

본 연구에서는 5G IoT센싱 기반 터널 내 교통사고 정밀 인지 및 2차 사고를 5G CBS 기반 초지연 상황 전파 정보 제공으로 터널 내 교통사고의 요구조자 피해 최소화를 위한 요구조자 자구적 대응 서비스를 개 발하는데 목적이 있다. 터널 사고 대응을 위해 기존의 BIM 데이터를 활용하여 재난안전 분야에 필요한 정 보만을 도출한 데이터 포맷 데이터에 실시간으로 수집되는 현장 수집정보 및 분석 결과를 매핑하여 통합 관제센터, 요구조자와 구조자에게 터널 내 사고 지점 및 대피 경로와 구조를 위한 사고 정보 앱 서비스를 제공함으로써 지능형 교통사고 대응 안전 서비스를 구현하는데 목표를 두고 있다. 터널 교통관리시스템의 핵심 요소기술로써 터널 내 돌발적인 교통사고 상황을 감지 어려움과 사고가 발 생한 후 2차 사고 방지와 요구조자에 대한 대응 서비스 개발을 위해 5G기반 기술과 복합 IoT센서를 활용 하여 해결하고자 한다.

항혈소판 제제의 임상적 유용성

이병권 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.4

환경평가 지원을 위한 지역 환경현황 분석 시스템 구축 및 운영 : 소음지도를 활용한 지역(도시)별 환경용량평가

이병권 한국환경연구원 2021 사업보고서 Vol.2021 No.-

Ⅰ. 연구의 배경 및 목적 소음지도는 전체적인 소음 환경을 시각적으로 보여 주지만, 각 공간 단위에 대한 전반적인 소음 상황을 표현하기에는 부족하다. 소음지도에는 소음에 노출된 인구와 각 소음 수준의 건강영향에 대한 사항이 포함되어 있지 않기 때문에 효과적인 소음 저감 대책의 수립을 위해 활용하는 데는 한계가 있다. 따라서 소음지도에 소음도, 소음에 노출된 인구, 건강영향 등이 함께 제시될 필요성이 있으며, 이를 토대로 소음 저감 정책 및 대책을 수립·시행할 때 가장 많은 시민을 대상으로 가장 효과적인 대책을 수립할 수 있다고 판단 된다. Ⅱ. 소음의 건강영향을 고려한 사회적 부담 지수화 방안 본 연구에서는 이 점에 주목하여 기존의 소음지도에 표현된 소음도 외에 소음에 노출된 인구와 소음이 건강에 미치는 영향을 종합적으로 계산하여 이를 공간적으로 표현하는 방법을 제안하였다. 그러나 국내에는 소음이 건강에 미치는 영향에 대한 기초자료가 없기 때문에 EU 자료를 활용하였고 이에 본 연구에 한계가 있을 수 있다. 그 결과 한국의 현황을 완전히 나타내는 결과에는 도달하지 못했지만 소음지도의 단점을 극복하기 위해 기존에 사용된 소음 노출 면적 및 노출 인구를 계산하는 것보다 정확도를 높임으로써 효과적인 활용이 가능할 것으로 기대한다. 또한 기존 연구와 달리 소음 노출로 인한 건강영향이 매우 작은 소음 수준을 설정하고 해당 소음 수준에서 소음의 건강영향 수준을 1.0으로 재설계함으로써 각 지표의 의미가 보다 명확해지도록 하였다. 향후 소음의 건강영향에 대한 국내 자료를 확보하고 우리나라 현황을 반영한 현실적인 소음종합지수를 제시하는 것이 필요하다고 판단된다. Ⅰ. Background and Purpose of the Study □ Although the noise map can visually confirm the overall noise environment, it is insufficient to express the overall noise situation for each spatial unit. Since the noise map does not include the population exposed to noise and the health effects of each noise level, there is a limit to establishing the most effective noise reduction measures in policy. □ Therefore, it is judged that the most effective countermeasures can be established for the largest number of citizens based on the noise level displayed on the noise map, the population exposed to noise, and health effects. Ⅱ. Developing Social Burden Index Based on the Health Effects of Noise □ In this study, in addition to the noise level expressed in the existing noise map, a method for spatially expressing the effects of noise on health and the population exposed to noise was proposed. However, since there is no basic data on the effects of noise on health in Korea, EU data were used. □ As a result, although we did not arrive at the results that fully represent the current state of Korea, it is judged that the results are more accurate and useful than the method of calculating the exposure area and population which is used to overcome the shortcomings of the existing noise map. □ In addition, unlike previous studies, by setting a noise level with a very small health effect due to exposure and redesigning the health effect level of noise to 1.0 at the noise level, the meaning of each indicator could be more clearly embedded. □ It is judged that it is necessary to secure domestic data on the health effects of noise in the future and to present a realistic noise composite index reflecting the current situation in Korea.