• Journal of Trauma and Injury
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• 제30권4호
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• pp.227-230
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• 2017

Rectus sheath hematoma (RSH) is an uncommon but well-documented clinical condition. It is usually caused by direct trauma or anticoagulation, although there are many other causes. However, RSH after noncontact strenuous exercise is very rare. We present a rare case of RSH after playing volleyball without direct trauma that was successfully treated by angiographic embolization.

• 대한정형외과스포츠의학회:학술대회논문집
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• 대한정형외과스포츠의학회 2004년도 The 7th korea-japan joint meeting of orthopaedic sports medicine
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• pp.26-26
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• 2004

• 대한정형외과스포츠의학회지
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• 제2권2호
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• pp.77-81
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• 2003

목적: 슬관절 주위 골격의 기초과학을 생체역학을 중심으로 설명하고 빈도가 높은 스포츠 손상들에 대해 기술하고자 한다. 해부 밀 운동학: 슬관절은 순수한 경첩 관절이 아니며 적합하지 않으므로 여섯 방향의 운동이 가능하다. 경골대퇴간 운동역학: 슬관절의 굴곡-신전 축은 시상면에 수직이 아닐 뿐 아니라, 관상면상 관절선과 평행하지 않으므로, 경골대퇴관절은 굴곡 시 내반과 내회전이 동반되고 신전 시에는 외반과 외회전이 동반된다. 슬개대퇴 관절: 슬개대퇴 관절 압박력은 슬관절의 굴곡 각도와 사두고근력에 비례한다 슬개골은 신전기전의 moment arm을 증가시켜 신전기전의 효율을 증대시키고 지렛대 역할을 한다. 슬개골 골절: 비전위성 골절이면서 하지 직거상 운동이 보존된 경우에 비수술적 치료의 적응증이 되며 수술적 치료 시 고정 방법의 선택은 골절 양상에 따라 결정되겠으나 어느 술식을 선택하여도 신전지대의 봉합은 필수적이며 중요하다 슬개골 불안정성: 선행 해부학적 이상을 조사해야 하며 급성 탈구에서도 골연골 골절편이 있거나 재발의 위험이 높은 운동선수에서 인대 봉합을 고려할 수 있다. 비수술적 치료 및 재활에도 불수하고 계속되는 재발성 아탈구나 탈구는 수술이 필요하다 학령기 스포츠 손상: Idiopathic Adolescent Anterior Knee Pain, Osgood-Schlatter Disease, Sinding-Larsen-Johansson Disease 등이 흔하다

• 한국컴퓨터정보학회논문지
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• 제29권5호
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• pp.111-121
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• 2024

근력 트레이닝은 운동의 효과와 함께 부상의 위험도 함께 공존한다. 운동에 대한 지식과 경험이 부족하거나 과도한 운동 강도에서의 반복은 부상으로 이어질 수 있다. 운동 진행 중 과정에 대한 적절한 피드백은 과학적 데이터 제공을 통한 운동 효과증대 및 부상의 감소는 물론 심리적 동기부여의 효과도 기대할 수 있다. 무선 근전도를 적용한 8주 동안의 바이오피드백 트레이닝의 적용에 따른 EMG(Electromyography) 장비 검증 및 운동 효과를 살펴보는 데 목적이 있다. 최근 3개월 이내 근골격계 진단을 받은 사람들을 제외하고 20대의 48명을 대상으로 4개의 그룹에 대해 8주간의 근전도 바이오피드백 트레이닝이 진행되었으며, 측정은 사전, 4주차, 8주차에 각각 실시되었다. 트레이닝 프로그램은 상지 근육을 강화하기 위한 것으로, 그룹별로 다른 운동이 시행되었다. 근전도 프로토타입인 Fitsig를 트레이닝 중에 사용하였고 근육의 변화를 확인하였다. 연구 분야에서 잘 알려진 Noraxon사의 제품과 Fitsig^®(EMG, FS-100)의 상관성 분석 결과, 중등도 상관성이 나타났다. 상완골 둘레, 상완골 근육량, 상완 이두근과 상완 삼두근 근력은 좌우 모두 시기간 통계적으로 유의한 차이가 발생했으며, 운동 종류에 따른 차이는 발생하지 않았다. 실시간 근전도를 활용한 피드백 트레이닝은 근비대 성장 및 근력 향상에 긍정적인 것으로 나타났다.

• 대한정형외과스포츠의학회지
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• 제1권2호
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• pp.131-137
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• 2002

목적: 전방십자인대부분파열후보존적치료군과완전파열후자가슬개건을이용한재건술군간의기능적평가, 활동도및전방안정성을비교평가하고자하였다.대상및방법: 전방십자인대손상으로진단되고관절경으로진단치료한38명의환자를대상으로2년이상추시하였으며전방십자인대50$\%$이하파열된부분손상군1 2명(평균연령: 38.3세), 완전파열후자가슬개건을이용한재건술군26명(평균연령: 25.3세)을대상으로하였다. 객관적인안정성은KT-2000 Arthrometer를이용하여15lb와20lb전방전위부하로측정하였으며,기능평가는Lysholm score, 활동도는Tegner activity score를이용하여분석하였다.결과: Lysholm의기능평가는부분손상군은88.5, 재건술군은89.3이었고, Tegner의활동도는부분손상군5.3, 재건술군5.1이었다( P<0.05 ) .전방안정성에서평균전방전위는20lb 부하하에부분손상군에서건측에비해1.7$\pm$1.4 mm, 재건술군에서는건측에비해2.3$\pm$1.9 mm였으며(P<0.05), 15lb 부하하에서는부분손상군은건측에비해1.2$\pm$1.0 mm, 재건술군에서는건측에비해1.4$\pm$1.5 mm였다(P<0.05). 합병증으로관절부종, 불안정성, 전방슬관절동통이었다. 불안정성은부분손상군에서흔한합병증이었다.결론: 양군에서임상결과들은비슷하였으며, Lysholm의기능평가는양호하였고, Tegner 활동도상태는양군에서평균적으로신체적인적당한활동(조깅, 규칙적인자전거타기)은유지되어50$\%$이하의부분손상군에대한보존적치료는양호한결과가나타난것으로사료되었다.

• 한국운동역학회지
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• 제21권2호
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• pp.173-179
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• 2011

This study aims to analyse difference in biomechanical factors between dominant legs and recessive ones according to muscular imbalance during drop landing targeting talented children in sports. The subjects of the study were ten primary students who are attending to Sports Program for Talented Children organized by C university (age: $12.28{\pm}0.70$ year, height: $1.52{\pm}0.11$ m, and weight: $45.2{\pm}4.9$ kg). Strength legs were classified into dominant side and strengthless legs were classified into non-dominant legs. For three-dimensional analyses of the data collected, 6 video cameras(MotionMaster200, Visol, Korea) were used. To analyse ground reaction force, two force platforms(AMTI ORG-6, MA) were used and to analyse electromyograghy a 8-channeled wireless Noraxon Myoresearch made in USA was used at 1000 Hz for sampling. As a result, it was discovered that the dominants legs controlled knee bending motions more stably than strengthless legs as the maximum vertical ground reaction force was significantly high in dominant legs(p<.05), and joint moment of knee joints of the dominant legs was high(p<.05). Therefore, this study suggested that injury prevention program focusing on muscular balance as well as the existing sports programs for talented children should be developed based on results of the study and it is expected that the results will be useful for improvement of sports programs for talented children.

• 대한정형외과스포츠의학회지
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• 제9권1호
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• pp.16-21
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• 2010

최근 스포츠 활동 증가로 인한 하지의 과사용증후군인 만성 구획증후군 및 스트레스 골절의 빈도가 늘어가고 있다. 만성구획증후군은 운동 중 근육의 부피 증가와 이로 인한 구획압 증가로 야기된 가역적인 허혈상태로, 보존적 치료로 호전되지 않는 경우 근막절개술 등의 수술적 치료를 고려할 수 있다. 스트레스 골절은 정상적인 골에 비정상적인 스트레스가 가해져서 발생하는 피로 골절과 비정상적인 골에 정상적인 스트레스에 의해서 발생하는 부전골절로 분류할 수 있으며, 대부분의 스트레스 골절은 하지, 특히 경골부에 호발한다. 운동선수에서 피로 골절은 훈련 방법의 변화에 기인할 수 있고 진단은 일차적으로 단순방사선 촬영을 시행하며, 자기공명영상을 통해 확진 할 수 있다. 대부분의 경우 휴식 및 단기간의 고정 등을 통한 보존적 치료만으로 증상의 호전 및 운동 복귀가 가능하나, 경골의 신연부에 발생한 경우 수술적 치료를 요할 수도 있다.

• 한국전문물리치료학회지
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• 제26권2호
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• pp.69-75
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• 2019

Background: Knee osteoarthritis (OA) diagnosis using Kellgren-Lawrence scores is commonly used to help decision-making during assessment of the severity of OA with assessment of pain, function and muscle strength. The association between Kellgren-Lawrence scores and functional/clinical outcomes remains controversial in patients with knee OA. Objects: The purpose of this study was to examine the relationships between Kellgren-Lawrence scores and knee pain associated with OA, function during daily living and sports activities, quality of life, and knee muscle strength in patients with knee OA. Methods: We recruited 66 patients with tibiofemoral knee OA and determined knee joint Kellgren-Lawrence scores using standing anteroposterior radiographs. Self-reported knee pain, daily living function, sports/recreation function, and quality of life were measured using the knee injury and OA outcome score (KOOS). Knee extensors and flexors were assessed using a handheld dynamometer. We performed Spearman's rank correlation analyses to evaluate the relationships between Kellgren-Lawrence and KOOS scores or muscle strength. Results: Kellgren-Lawrence scores were significantly negatively correlated with KOOS scores for knee pain, daily living function, sports/recreation function, and quality of life. Statistically significant negative correlations were found between Kellgren-Lawrence scores and knee extensor strength but not flexor strength. Conclusion: Higher Kellgren-Lawrence scores were associated with more severe knee pain and lower levels of function in daily living and sports/recreation, quality of life, and knee extensor strength in patients with knee OA. Therefore, we conclude that knee OA assessment via self-reported KOOS and knee extensor strength may be a cost-effective alternative to radiological exams.

• Advances in nano research
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• 제14권5호
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• pp.435-442
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• 2023

Sports activities, including playing tennis, are popular with many people. As this industry has become more professionalized, investors and those involved in sports are sure to pay attention to any tool that improves athletes' performance Tennis requires perfect coordination between hands, eyes, and the whole body. Consequently, to perform long-term sports, athletes must have enough muscle strength, flexibility, and endurance. Tennis rackets with new frames were manufactured because tennis players' performance depends on their rackets. These rackets are distinguished by their lighter weight. Composite rackets are available in many types, most of which are made from the latest composite materials. During physical exercise with a tennis racket, nanocomposite materials have a significant effect on reducing injuries. Materials as strong as graphite and thermoplastic can be used to produce these composites that include both fiber and filament. Polyamide is a thermoplastic typically used in composites as a matrix. In today's manufacturing process, materials are made more flexible, structurally more vital, and lighter. This paper discusses the production, testing, and structural analysis of a new polyamide/Multi-walled carbon nanotube nanocomposite. This polyamide can be a suitable substitute for other composite materials in the tennis racket frame. By compression polymerization, polyamide was synthesized. The functionalization of Multi-walled carbon nanotube (MWCNT) was achieved using sulfuric acid and nitric acid, followed by ultrasonic preparation of nanocomposite materials with weight percentages of 5, 10, and 15. Fourier transform infrared (FTIR) and Nuclear magnetic resonance (NMR) confirmed a synthesized nanocomposite structure. Nanocomposites were tested for thermal resistance using the simultaneous thermal analysis (DTA-TG) method. scanning electron microscopy (SEM) analysis was used to determine pores' size, structure, and surface area. An X-ray diffraction analysis (XRD) analysis was used to determine their amorphous nature.

• 한국전문물리치료학회지
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• 제17권1호
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• pp.9-16
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• 2010

This study aimed to compare 2 protocols recommended to patients with chronic cervical cord injury: each protocol included breathing exercises (inhalation-oriented or exhalation-oriented) and facilitation maneuver for the accessory respiratory muscles. Seventeen patients with chronic cervical cord injury volunteered to participate in this study, and we randomized these patients into 2 groups: the inhalation-oriented breathing exercise group (IOBEG) and exhalation-oriented breathing exercise group (EOBEG), consisting of 8 and 9 patients, respectively. Patients in the IOBEG performed inspiratory exercises using intermittent positive pressure breathing devices, while those in the EOBEG performed expiratory exercises using incentive spirometry. All exercises were performed by the subjects twice a day for 4 weeks, with each session lasting an average of 20 min. The outcomes were assessed on the basis of the pre- and post-treatment values of vital capacity (VC), forced vital capacity (FVC), forced expiratory volume in 1 second (FEV1), and FEV1/FVC. In the IOBEG, no significant differences were observed between the pre- and post-treatment values of any of the measured variables (p>.05); however, in the EOBEG, significant improvement was noted in the VC, FVC, FEV1 measured (p<.05) after the treatment. In addition, the rates of change in the values of VC, FVC, and FEV1 differed significantly between the 2 groups (p<.05). These findings suggest that the EOBEs can enhance respiratory function and are clinically feasible in patients with chronic cervical cord injury. Further studies will be undertaken to evaluate the clinical application of these findings.