복강경하 자궁적출술 후 가스 제거방법에따른 술 후 통증의 비교

유시현,윤주희,김천숙,안기량,권진형,강규식,김지은,이호철 대한마취통증의학회 2004 Korean Journal of Anesthesiology Vol.47 No.2

Background: Laparoscopic surgery has many advantages compared with conventional methods and may allow a significant reduction in postoperative pain and analgesic consumption. Nevertheless, some patients still experience significant pain. Therefore, many clinicians have tried various methods to reduce of postoperative pain. We investigated degrees of postoperative pain and the incidences of shoulder pain versus the different methods of gas removal after laparoscopic surgery. Methods: Sixty ASA class I or II patients were included in this study. In Group A (Control group, n = 20), residual carbon dioxide was removed by the classic method without a drain tube. In Group B (Suction group, n = 20), residual carbon dioxide was removed using a suction device aggressively without a drain tube. In Group C (Drain group, n = 20), residual carbon dioxide was removed by the classic method with a drain tube. The intensities of abdominal and shoulder pain were assessed 1, 6, 24 and 48 hours after surgery using a visual analog scale (VAS) and a verbal rating scale (VRS). We also assessed the mean hospital stay for the three groups. Results: The abdominal pain scores (VAS and VRS) at 1 hour after surgery and the incidence of shoulder pain, epigastria pain and flank pain were significantly higher in Group A than in the other groups for 1hour after surgery (P < 0.05). Mean hospital stay was significantly longer for group C. Conclusions: After laparoscopic surgery, the active removal of residual carbon dioxide may be a simple and safe method that significantly reduces postoperative shoulder and abdominal pain. (Korean J Anesthesiol 2004; 47: 222~7)

테니스 엘리트 선수의 집단면담(Focus Group Interview)을 통한 테니스화 개발 방향 탐색

유시현,길호종,정희석,박상균 한국체육대학교 체육과학연구소 2022 스포츠사이언스 Vol.40 No.3

The purpose of this study was to conduct a focus group interview (FGI) with tennis elite players, and to derive the main functions of ten- nis shoes, their roles, and the main contents necessary for development. Participants in FGI were 5 male tennis players (age: 21.0±1.4 years, height: 179.8±6.1 cm, body weight: 76.6±13.8 kg, career: 10.6±0.9 years) and 8 female tennis players (age: 20.1±1.1 years, height: 164.9±3.9 cm, body weight: 57.6±3.2kg, career: 10.9±1.9 years). The results were as follows. First, the function of tennis shoes recognized by players as the most important was to minimize the shaking of the foot in the shoe. Second, tennis players responded that the function of tennis shoes was required for sliding and direction change movements, which are mainly conducted while performing forehand and backhand strokes. Third, the tennis shoe brand most preferred by tennis players is Nike, followed by Asics and Adidas. At this time, the biggest reason for preference was the lightness and design of tennis shoes. Based on the results, the function of tennis shoes is importance for the safety and performance of players in a tennis game where intense movements frequently occur. In particular, the development of an insole that can minimize the shaking of the foot and a change in the structure of the tennis shoe are required, and it is necessary to find an appropriate level of friction in the outsole. In addition, a lot of attention and effort are needed to reduce the weight of tennis shoes and improve the design.

태권도 자유 품새에 적용하기 위한 뛰어 앞차기 착지 동작의 상해 예방 전략

유시현 한국운동역학회 2020 한국운동역학회지 Vol.30 No.1

Objective: The purpose of this study was to investigate the injury factors of Taekwondo jumping kick during landing phase according to the experience of injury and to suggest a stable landing movement applicable to free style Poomsae. Method: The participants were non-injury group (NG), n = 5, age: 20.5±0.9 years; height: 171.6 ±3.6 cm; body weight: 65.7±4.4 kg; career: 5.0±2.7 years. Injury group (IG), n = 9, age: 21.0±0.8 years; height: 170.9±4.6 cm; body weight: 67.1±7.0 kg; career: 8.6±5.0 years. The variables are impact force, loading rate, vertical stiffness, lower limb joint angle, stability, balance, and muscle activity in the landing phase. Results: NG was statistically larger than IG in the gluteus medius (p<.05). The impact force, loading rate and vertical stiffness decreased as the landing foot angle, the ROM of lower limb joint angle and COM displacement increased (p<.05). Conclusion: Based on the results, it means that the landing foot angle plays an important role in the impact reduction during landing phase. It is required the training to adjust the landing foot angle.

Suggestion of New Terminology and Classification of the Hand Techniques by Angular Momentum in the Taekwondo Poomsae

유시현,정국현,류지선 한국운동역학회 2016 한국운동역학회지 Vol.26 No.1

Objective: The purpose of this study is to suggest new terminology for the ninety-five hand techniques based on the significance of their angular momentum, determined by analyzing each technique's influence or impact on the compartmentalized angular momentum of the trunk, upper arm, and forearm in the Taekwondo Poomsae. Method: An athlete who won the 2014 World Taekwondo Poomsae championship was selected and agreed to participate in the data collection phase of our investigation. The video data was collected using eight infrared cameras (Oqus 300, Qualysis, Sweden) and the Qualisys Track Manager software (Qualisys, Sweden). The angular momentum of each movement was then calculated using the Matlab R2009a software (The Mathworks, Inc., USA). Results: The classification of the ninety-five hand techniques in the Taekwondo Poomsae based on the significance of each segment's momentum is as follows. Makgi (blocking) is classified into fourteen categories, jireugi (punching) is classified into three categories, chigi (hitting) was classified into six categories, palgupchigi (elbow hitting) was classified into four categories, and jjireugi (thrusting) was classified two categories. Conclusion: This study offers a new approach, based on a biomechanical method, to the classification of the hand techniques that reflect kinesthetic motions in the Taekwondo Poomsae.

The Effects of Upper Limb, Trunk, and Pelvis Movements on Apkubi Momtong Baro Jireugi Velocity in Taekwondo

유시현 한국운동역학회 2016 한국운동역학회지 Vol.26 No.3

Objective: The purpose of this study was to investigate effects of upper limb, trunk, and pelvis kinematic variables on the velocity of Apkubi Momtong Baro Jireugi in Taekwondo. Method: Twenty Taekwondo Poomsae athletes (age: 20.8±2.2 years, height: 171.5±7.0 cm, body weight: 66.2±8.0 kg) participated in this study. The variables were upper limb velocity and acceleration; trunk angle, angular velocity, and angular acceleration; pelvis angle, angular velocity, and angular acceleration; and waist angle, angular velocity, and angular acceleration. Pearson's correlation coefficient was calculated for Jireugi velocity and kinematic variables; multiple regression analysis was performed to investigate influence on Jireugi velocity. Results: Angular trunk acceleration and linear upper arm punching acceleration had significant effects on Jireugi velocity (p<.05). Conclusion: We affirmed that angular trunk acceleration and linear upper arm punching acceleration increase the Jireugi velocity.

기합의 유형과 방법이 태권도 뒤차기의 충격 가속도에 미치는 효과

유시현,길호종 한국체육대학교 체육과학연구소 2023 스포츠사이언스 Vol.41 No.2

We tried to examine the effect on the impact acceleration when Taekwondo back kick depending on the form and timing of shout. Fifteen subjects (age: 20.8±0.8 years, height: 169.3±5.2 cm, body weight: 65.1±8.2 kg, career: 4.3±2.5 years) were selected. A three-axis accelerometer was attached to the anterior superior iliac spine, the distal thigh, and the distal tibia of the leg performing the kick. In order to examine the difference according to the presence or absence of shout, a non-shout kick (NSK) and a shout kick (SK) were randomly compared. And to examine the difference in the length and time of the shout, a long-shout before the kick (LSBK), a short-shout before the kick (SSBK), a long-shout at the moment of the kick (LSMK), and a short-shout at the moment of the kick (SSMK) were randomly compared. The vertical acceleration of the tibia was higher in SK than in NSK (p<.05). The acceleration of the tibia, femur, and pelvis of SSBK and SSMK was higher than that of LSBK and LSMK (p<.05). In order to successfully perform a back kick that requires momentary concentration and power, it is important to use shout, and a short burst of shout is a more effective method.

국제규범 확산을 통해 본 동북아시아 해양환경협력

유시현 인문사회 21 2020 인문사회 21 Vol.11 No.4

본 연구는 동북아시아 해양환경의 초기 제도화과정에서 유엔환경계획(UNEP)의 지역해 국제규범이 어떻게 역내에 흡수되어서 북서태평양보존계획(NOWPAP)이라는 제도로서 국제규범 확산이 이루어졌는가를 고찰했다. 구성주의 접근법을 적용하여 첫째, 어떤 ‘지배담론’이 창출되어, 국제협력의 움직임이 시작되는 ‘공유된 지식 혹은 이해’를 형성했는지, 둘째, 이와 같은 과정을 통해서 ‘지역해 해양환경규범’의 성립이 가능했는가를 살펴보고, 셋째, 그 규범이 사회적으로 영향력 있는 역할이 가능한 당시의 ‘사회구조’와의 상호작용이 어떠했는가를 분석했다. 결과적으로 NOWPAP 초기 협상과정에서 UNEP의 지역해 프로그램과 ‘공유해양’ 규범의 확산은 성공적으로 이루어졌다. 그러나 각 국가별 국민적 관심과 지식의 대중적 확산은 발생하지 않았다. 그럼에도 불구하고 UNEP의 “공유해양” 선규범의 존재와 그 규범에 기초한 동북아 제도의 모색으로 느슨한 형태나마 ‘동북아 지역해 해양환경의 제도화’의 시작이 가능하게 되었다.

태권도 뛰어 앞차기 착지 발 각도에 따른 상해 요인 분석

유시현 세계태권도문화학회 2020 세계태권도문화학회지 Vol.11 No.2

The purpose of this study is to analyze the factors of injury according to the landing foot angle of the jumping front kick and to present the ideal landing method and the landing foot angle. The impact variables were analyzed by selecting 13 participants (age: 20.8±0.8 years, height: 171.4±4.1 cm, body weight: 66.1±6.1 kg, career: 7.6±4.6 years) who could adjust the angle of foot at the landing phase during the jumping front kick. As a result, the mean impact force durng landing phase was greater 45° and 90° than 180°. The maximum vertical ground reaction force was greater 90° than 135° and 180°. The loading rate and vertical stiffness were greater 45° and 90° than 135° and 180°. Base on the results, it is believed that landing of the footwork by turning at least 135° after a forward kick will relieve the shock and load transmitted to the human body a little bit.

The effect of human mesenchymal stem cell injection on pain behavior in chronic post-ischemia pain mice

유시현,Sung Hyun Lee,Seunghwan Lee,Jae Hong Park,Seunghyeon Lee,Heecheol Jin,Hue Jung Park 대한통증학회 2020 The Korean Journal of Pain Vol.33 No.1

Background: Neuropathic pain (NP) is considered a clinically incurable condition despite various treatment options due to its diverse causes and complicated disease mechanisms. Since the early 2000s, multipotent human mesenchymal stem cells (hMSCs) have been used in the treatment of NP in animal models. However, the effects of hMSC injections have not been studied in chronic post-ischemia pain (CPIP) mice models. Here, we investigated whether intrathecal (IT) and intrapaw (IP) injections of hMSCs can reduce mechanical allodynia in CPIP model mice. Methods: Seventeen CPIP C57/BL6 mice were selected and randomized into four groups: IT sham (n = 4), IT stem (n = 5), IP sham (n = 4), and IP stem (n = 4). Mice in the IT sham and IT stem groups received an injection of 5 μL saline and 2 × 104 hMSCs, respectively, while mice in the IP sham and IP stem groups received an injection of 5 μL saline and 2 × 105 hMSCs, respectively. Mechanical allodynia was assessed using von Frey filaments from pre-injection to 30 days post-injection. Glial fibrillary acidic protein (GFAP) expression in the spinal cord and dorsal root ganglia were also evaluated. Results: IT and IP injections of hMSCs improved mechanical allodynia. GFAP expression was decreased on day 25 post-injection compared with the sham group. Injections of hMSCs improved allodynia and GFAP expression was decreased compared with the sham group. Conclusions: These results suggested that hMSCs may be also another treatment modality in NP model by ischemia-reperfusion.

계획수술 취소율과 취소사유에 대한 분석

유시현,조성환,김천숙 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.1

Background: Cancellation of a planned surgery is a waste of time and money. Also cancelled patients experience significant psychologic and economic burdens. Object: The aim of this study is to analyze the reasons for cancellation of an elective operation and enhance the efficacy of managing the OR. Material and Method: We performed prospective study in patients who planned elective surgery under general or regional anesthesia from January 1, 2003 to March 31(the first period) and from August 1, 2003 to September 31, 2003(the second period) in the operating room of Soonchunhyang cheonan Hospital. Daily total number of planned elective surgeries, number of cancellation, and the most important reasons for cancellation were recorded. Comparison of the cancellation rate between the two period was performed. Result: The total number of planned elective surgery in first and second period was 1,655 patients and 1,186 patients respectly. The the total number of cancelled patients in first and second period was 57 patients and 42 patients respectly. Thus the mean rate of cancellation was 3.44% in the first period and 3.54% in the second period. The reasons for cancellation were as follows: refusal of operation(39%) was most common in the first period, the next were no admission(21%) and combined systemic disease(21%). But in the second period, no admission(45.3%) was most common, the next were combined systemic disease(21.4%). Conclusion: There are several ways to decrease the cancellation rate in operating room. Good rapport and sincere communication with patients is the most important ways to decrease cancellation rate in Soonchunhyang cheonan hospital.