태권도 돌려차기 시 기술 수준에 따른 몸통, 골반, 지지 다리의 운동학적 변인 비교

김재웅 ( Kim Jae-woong ),한기훈 ( Han Ki-hoon ),김제민 ( Kim Je-min ),이상우 ( Lee Sang-woo ),권문석 ( Kwon Moon-seok ),터틀노엘 ( Noelle J. Tuttle ) 국기원 2018 국기원태권도연구 Vol.9 No.1

이 연구의 목적은 태권도 돌려차기 시 기술 수준에 따른 몸통, 골반, 지지 다리의 운동학적 변인을 비교 분석하는 데 있다. 본 연구를 위해 블랙 벨트 소지자로서 기술 수준에 따라 중급자10명, 상급자 9명이 실험에 참여하였다. 3차원 동작 분석 시스템을 사용하여 골반, 몸통, 지지다리의 방향각을 산출하였다. Start, Toeoff, MKF, Max, Impact, Min에서 그룹 간의 평균 방향각을 비교하기 위하여 독립표본 t-검정을 하였다. MKF, Impact, Min에서 골반의 좌측 기울어짐 각도가 그룹 간의 유의한 차이가 나타났다. Start와 Max에서 지지 다리의 엉덩관절 굴곡 각도와 MKF에서 지지 다리의 엉덩관절 외전 각도 사이에 유의한 차이가 있었다. 이상의 결과를 볼 때, 상급자들은 푸쉬단계에서 엉덩관절의 굴곡 각도가 증가 되었고, MKF에서는 외전 각도가 감소하였다. 또한, 스트라이크 단계에서 골반의 좌측 기울어짐 각도는 감소하였다. The study purpose was to investigate skill level differences on trunk, pelvis, and supporting leg kinematics in a Taekwondo roundhouse kick. 10 intermediate and nine expert male black-belt holders executed roundhouse kicks at a target. Orientation angles of the pelvis, trunk, and supporting -thigh, -shank, and -foot were obtained through a three-dimensional video motion analysis. Orientation angles at Start, Toeoff, Maximum Knee Flexion(MKF), Impact, Maximum angle(Max), and Minimum angle(Min) were compared between groups using independent t-tests(p<.05). Significant differences between groups were found in the pelvis left lateral tilted position at MKF, Impact, and Min; significant differences were also found in the supporting hip joint flexed position at Start and Max, and abducted position at MKF. It was concluded that higher performers increased the hip joint flexion angle in the Push phase, decreased abduction angle at MKF, and decreased the pelvis left tilted angle in the Strike phase.

도심 수목원에서의 경관감상과 산책이 인체의 생리적 안정에 미치는 영향

박범진 ( Bum Jin Park ),가재남 ( Jae Nam Ka ),이민선 ( Min Sun Lee ),김선아 ( Seon A Kim ),박민우 ( Min Woo Park ),최윤호 ( Yoon Ho Choi ),정다워 ( Da Wou Joung ),권치원 ( Chi Weon Kwon ),염동걸 ( Dong Geol Yeom ),박순주 ( Soon Jo 한국산림과학회 2014 한국산림과학회지 Vol.103 No.4

This research was conducted to investigate the impact of viewing scenery and walking in the urban forest onphysiological relaxation of humans. The experiment was conducted in Hanbat Arboretum located in Daejeon, and thecontrol experiment was conducted in front of Daejeon City Hall. The subjects that participated in the experimentcomprised 24 Korean male university students in their 20s (average age, 21.1±2.5 years), participated in the experimentas the subject, and these subjects were classified into three groups divided into three locations such as the pine forest inArboretum, the pond in Arboretum, and the city. The subjects sat down and viewed scenery for 10 min, and they thenwalked for 15 min. Further, physiological changes were measured using indicators such as heart rate variability (HRV),blood pressure, and pulse rate. As a result, when subjects viewed scenery and walked in the urban forest, a statisticallysignificant increase in the high frequency (HF) power of HRV and decrease in systolic pressure was observed comparedwith when subjects viewed scenery and walked in the city. Through this research, it was found that activities like viewingscenery or walking in Arboretum of the city are effective in increasing the physiological relaxation of the city residents.

전처리 방법에 따른 하수슬러지 가용화 비교연구

권재현,김봉준,김민규,염익태,김형수 대한상하수도학회 2003 상하수도학회지 Vol.17 No.4

The pretreatment process was carried out to solubilize the sewage sludge for enhancing its biodegradability using alkaline treatment, ultrasonic treatment(l5kHz), ozone treatment and different combination of these three methods: alkaline followed by ultrasonic as well as ozone, and ultrasonic followed by alkaline. The solubilization efficiency was evaluated based on the SCOD/TCOD ratio and VSS/TS ratio. In results, the proper condition of alkaline treatment was shown as 30meq/l of NaOH, pH 12 and 3hours of reaction time. Solubilization efficiency increased to 17% from initial 2% based on SCOD/TCOD ratio under this condition. In ultrasonic treatment, the higher ultrasonic power, the longer treatment time and the lower sludge volume resulted in higher solubilization respectively. There was a rapid increase in solubilization efficiency after 20 minute, then it was measured as 32% of SCOD/TCOD ratio in 1 hour at a ultrasonic power of 1,300W with 1/sludge. Solubilization efficiencies in combined treatment using alkaline and ultrasonic were 47-53% higher than single treatment at a sonicated time of 1 hour. Ozone treatment followed by alkaline treatment also represented the enhanced solubilization compared to ozone treatment. Therefore, ultrasonic or ozone treatment assisted by alkaline could achieve the short treatment time as well as high solubilizetion efficiency.

슬링(Sling) 시스템을 이용한 경부 안정화 운동

권재확,조미주,박민철,김선엽 대한정형물리치료학회 2002 대한정형도수물리치료학회지 Vol.8 No.2

Cervical pain is a rapid increase that is owing to a flexion-extension whiplash injury, unappropriated posture, chronical repetition injury from abdominal position of head and neck, excessive repeating work, chronical deficiency of excercise. Because of that is bring about muscle unbalance, tightness of cervical extensor muscle, weakness of cervical deep flexor muscles, instability of cervical region and reduction of proprioceptive sensor. Recent the role of muscle is more emphasized for preservation of sine stabilization. And cognition of integrated muscular system, importance for the operation and relation is increased to maintain stability of the motor system and pertinent function. Therefore we are going to introduce the sling exercise and stabilization exercise method for advanced efficient of cervical and upper limb and for the muscle strengthening to importance cervical stabilization through neurological program as control the reaction of cervical stabilization. Sling exercise therapy(SET) concept consists of a system of diagnosis and treatment. The system of diagnosis involves testing the muscle's tolerance through progressive loading in open and close kinetic chains. The SET system contains elements such as relaxation, increasing the range of movement, traction, training the stabilizing musculature, sensory-motor exercises, training in open and close kinetic chains, dynamic training of the mobilizing musculature, cardiovascular exercise, group exercise, personal exercise at home Sensory-motor training is an essential element of the SET concept. The emphasis is on closed kinetic chain exercise on an unstable surface, there by achieving optimum stimulation of the sensory-motor apparatus.

여재의 개선에 따른 유기물 제거효율 및 질산화 비교

민선홍,김병욱,권재혁 三陟大學校 2000 論文集 Vol.33 No.2

Where control of algal growths in the receiving water is necessary to protect beneficial uses, removal or reduction of nitrogen in wastewater prior to charge may be desirable. An object of this study is development of nitrification(conversion TKN to nitrate) rate in domestic wastewater treatment. A bench scale reactor used in this study has reused media(SWPP media). This study was conducted to investigate the performance and bioflim characteristics of modified media(RUN 2) in comparison with conventional media(RUN 1) on wastewater treatment system. Influent BOD, COD and TKN concentration were ranged 254.1 to 270.4 mg/L, 473.0 to 498.4 mg/L and 19.3 to 21.4 mg/L, respectively. During operating time for 116 day, organic loading rates were 0.254 to 1.044 kgBOD/㎥/day and nitrogen loading rates were 19 to 86 gTKN/㎥day. The results were as follows ; Nitrogen removal efficiency was 22.3, 36.1, 90.4 and 95.8% in RUN 1 and 25.2, 75.1, 95.1 and 96.7% in RUN 2. Effluent NO₃-N concentration in RUN1 and RUN2 were 0∼15.54mg/L, 0.09∼15.99 mg/L, respectively.

신장에 발생한 섬유육종 1례

이재규,손경민,권동득,오봉렬,류수방,박양일,최찬 大韓泌尿器科學會 2001 Korean Journal of Urology Vol.42 No.7

흉막삼출의 유무에 따른 쯔쯔가무시증 환자간의 비교

권세훈,김형호,강지인,하재하,한경택,이재록,김동민,권용은,윤성호,이승일 朝鮮大學校 附設 醫學硏究所 2007 The Medical Journal of Chosun University Vol.32 No.1

Scrub typhus is a potentially fatal infectious disease caused by the organism Orientia tsutsugamushi. Clinical manifestations are fever, skin rash, eschar and varying degree of respiratory distress. The pleural effusion in scrub typhus is rare and secondary to the destruction of vascular endothelium. Because the respiratory symptoms are generally mild and the pleural effusion in scmb typhus is rare than in interstitial pneumonia, there are few comments about the characteristics of scmb typhus with pleural effusion. So we made the comparative study of scmb typhus patients between with pleural effusion and without pleural effusion. 연구배경 치명적일 수 있는 감염질환 중 하나인 쯔쯔가무시중(Scrub typhus)에서 드문 흉막삼출을 동반한 환자에 대한 고찰은 다른 문헌에서도 자주 언급되지 않았다. 따라서 본 저자들은 흉막삼출이 있는 경우와 없는 경우에 따른 쯔쯔가무시중 환자들을 비교하고자 하였다. 방법 2003년에서 2006년까지 조선대학교 병원 내과에 입원중인 환자 중 쯔쯔가무시중 진단을 받은 총 109명의 환자를 대상으로 하여 흉부 X선 검사 및 혈청학적 검사(CPK, LDH, ESR, CRP, AST, ALT, ADA), 혈액학적 검사(WBC, PLT) 및 백분율 검사등을 실시하였다. 결과 흉막삼출이 있는 환자들의 경우 흉막 삼출이 없는 환자들에 비해 ESR 수치가 통계학적으로 의의있게 높았다(p-vaule < 0.05). 결론 흉막삼출 유무에 따른 쯔쯔가무시중 환자간의 비교에 있어 ESR 수치가 통계학적인 의의를 가졌다.

중국의 사회변동에 따른 직업기술교육의 발전에 관한 고찰

민재기 ; 권창길 김천대학교 1999 김천대학교 논문집 Vol.20 No.-

The aim of this study is to understand education of vocational techniques of China. chapter Ⅱanalyse vocational trend of China, chapter Ⅲ reveal each school system, Chapter Ⅵ say “What is the problem?”, and Chapter Ⅴ explain analysing resultant. The result are as follows. 1. General education and vocational education is equally rate, because the people is recognition highly vocational education. We find out to interest both vocational education dividing by elementary, middle, and high system. 2. They take a serious view of practice by establishing school and factory. 3. We have to recognize the system of vocational education have the strength and weakness in a point of view. Thus, it is the difference between China and Korea, the environment of Chinese vocational education system act as socialism by tradition and line, but the system of Korea act as capitalism by market economy system. 4. They also have the difference between environmental and cultural back ground. 5. Our present problem is to make a fitable Korean vocational education system by our environment and present situation. Eventually, we hope to aid vocational education system analysing Chinese experience by studying and analysing practical point and connectional education and school and industry.

동일한 환자에서 조혈모세포이식 전후의 호중구감소 기간 중 감염양상에 대한 비교연구 : 중심정맥관 관련 패혈증을 중심으로 Based on Central Venous Catheter Related Septicemia

류재호,노규태,이영석,이영호,권혁찬,김재석,김효진,이영민,박혜원,박근희 대한조혈모세포이식학회 2002 대한조혈모세포이식학회지 Vol.7 No.1

연구배경: 동일한 환자를 대상으로 조혈모세포이식 전 일반 병실에서의 관해유도 항암제치료 및 강화요법으로 인한 호중구감소 기간의 감염양상과 고용량 항암제치료 후 무균실에서의 조혈모세포이식 시 호중구감소 기간의 감염양상을 중심정맥관 관련 패혈증을 중심으로 비교 연구함으로써 효율적인 감염관리지침을 마련하고자 하였다. 대상 및 방법: 1999년 1월부터 2001년 7월까지 2년 7개월간 동아대학교병원 일반병실에서 악성혈액질환으로 항암제 치료를 받다가 조혈모세포이식을 시행받았던 22명을 대상으로 중심정맥관 관련 패혈증의 형태를 비교분석하였다. 결과: 대상 환자들의 일반병실과 무균실에서의 입원기간은 각각 32±13일, 33±19일, 호중구 감소기간은 15±12일, 17±18일, 호중구 감소기간의 발열 횟수는 14회, 14회로서 입원병실의 종류에 따른 차이는 없었다. 환자들의 중심정맥관 사용일수는 일반병실에서 29일(7~545일), 무균실에서 100.5일(25~606일)이었으며, 총 사용일수는 각각 1,515일, 3,250일로서 무균실에서의 중심정맥관 사용일수가 의미 있게 길었다(P=0.001). 중심정맥관 사용 일수에 대한 감염률은 각각 5.28/1,000일, 3.08/1,000일로서 일반병실에서 그 빈도가 높았으나 통계적 유의성은 보이지 않았다(P=0.141). 결론: 중심정맥관 삽입 후 일반병실에서 항암제 치료를 받던 환자가 조혈모세포이식을 위하여 무균실에 입원하는 경우, 중심정맥관을 교체하는 것이 감염관리를 위하여 바람직할 것으로 생각된다. Background: We compared the incidence of central venous catheter (CVC) related septicemia during neutropenic period in the same patient, which developed following chemotherapy for remission induction and consolidation, or hematopoietic stem cell transplantation (HSCT). Methods: We retrospectively reviewed the medical records and laboratory data of 22 patients with hematologic malignancies who received anticancer chemotherapy followed by HSCT at Dong-A University Hospital between January, 1999 and July, 2001. We investigated the duration of hospitalization, duration of neutropenic period, duration of catheterization, microbiologically documented organisms and incidence of CVC related septicemia. Results: The data in general ward (before HSCT) and laminar air flow room (after HSCT) were as follows: duration of hospitalization was 32±13 days and 33±19 days, duration of neutropenic period was 15±12 days and 17±18 days, median duration of catheterization was 29 days (7~545 days) and 100.5 days (25~606 days) (P=0.001), and incidence of CVC related septicemia was 5.28/1000 days and 3.08/1000 days, respectively. In the CVC related septicemia, the most common etiologic organism was coagulase negative staphylococcus. Conclusion: We suggest that the exchange of CVC before admission to laminar air flow room could decrease the incidence of CVC related septicemia in HSCT recipients.

자발성 뇌교출혈 환자의 예후에 관한 임상 분석

조재영,석종식,민병국,권정택,최덕영,황성남,김영백,박승원 중앙대학교 의과대학 의과학연구소 2002 中央醫大誌 Vol.27 No.1

Patients with spontaneous pontine hemorrhage very often develop setvere disturbances of consciousness,pupilary abnormalities, respiratory and motor. They have high mortality rate. Therefore, I analyzed the correlation between the Glasgow outcome scale(GOS)and clincial manifestations or computed tomographic(CT)findings in 48 patients with spontaneous pontine hemorrhage to clarify factors predicting the prognosis. I examined 48 Patients with spontaneous pontine hemorrhage; 33 males and 15 females, age 54.6±8.99(mean±S.D.;range 39 to 68)brought to our hospital between January 1995 and December 1999, retrospectively. Correlations between the clinical manifestations, CT findings and the GOS was assessed with multivariate regression analysis. The results were as follow: 1) Patients with the pontine hemorrhage were of 8.8% in those with intracerebral hemorrhage. The ratio of male and female was 33 to 15. The incidence of age is eqial to 40,50 and 60. Total mortality was 41.6%. 2) The poor prognostic factor were that; Glasgow coma scale(GCS)3∼8, irregular respiration. pupilary abnormality, quadriplegia, Brain CT typeⅠ(massive), hydrocephalus, extrapontine extension, Intraventricular hemorrhage(IVH). These clinical analysis should be useful in determining the level of care and future resuscitative efforts.