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태권도지도자에 대한 공정성 인식이 선수들의 리더신뢰와 태권도지속의사에 미치는 영향
장재석 ( Jang Jae-seok ),이병관 ( Lee Byung-kwan ),이석준 ( Lee Suk-jun ) 국기원 2020 국기원태권도연구 Vol.11 No.4
이 연구의 목적은 태권도지도자의 공정성이 리더신뢰 및 태권도지속의사에 미치는 영향을 규명하는 데 있다. 연구의 목적을 달성하기 위해 2018년도 서울특별시, 경기도, 충청남도, 경상남도, 전라남도, 부산광역시에 소재한 중등학교(중학교, 고등학교)에 재학 중인 태권도선수들을 대상으로 하였다. 편의표본추출법으로 자료를 수집하였으며, 최종분석에는 394명의 자료가 사용되었다. 통계방법은 빈도분석, Cronbach’s α검사와 확인적 요인분석, 상관관계분석, 다중 및 단순회귀분석을 실시하였으며, 그 결과는 다음과 같다. 태권도지도자의 공정성은 리더신뢰에 정(+)의 영향을 미치는 것으로 나타났다. 하위 요인인 분배공정성, 절차공정성, 상호작용공정성 모두가 정(+)의 영향을 미치며, 그중 상호작용공정성이 리더신뢰에 가장 큰 영력을 행사하였다. 둘째, 태권도지도자의 공정성은 태권도지속의사에 정(+)의 영향을 미치는 것으로 나타났다. 공정성의 하위요인인 분배공정성, 절차공정성, 상호작용공정성 모두 정(+)의 영향을 미치며, 그중 분배공정성이 태권도지속의사에 가장 큰 영력을 행사하였다. 셋째, 리더신뢰는 태권도지속의사에 정(+)의 영향을 미치는 것으로 나타났다. 이는 태권도선수가 태권도 활동에 지속시키기 위해서는 선수에게 신뢰 형성이 무엇보다 중요함을 시사한다. 따라서 태권도지도자의 공정성은 선수들이 리더를 신뢰하게 하고, 태권도를 지속하는 데 중요 요인으로 작용을 하므로 지도자는 공정한 팀 관리로 자신의 신뢰감 증대와 더불어 선수들의 태권도 지속성을 강화시켜야 함을 시사해 주고 있다. This study was aimed to investigate the effects of the justice of Taekwondo leaders on leader trust and Taekwondo continuance intention. The research subjects were collected from Taekwondo players in secondary schools located in Seoul, Gyeonggi, Chungnam, Gyeongnam, Cheonnam, and Busan in 2018. The data was collected using the standard sampling method, and the final analysis was based on the responses of 389 student Taekwondo players. For data processing, regression analysis was used to verify the hypothesis. The following conclusions were obtained as results through those methods and procedures. First, leader’s justice has a positive effect on leader trust. Second, it was proved that leaders’ justice has a positive effect on players’ Taekwondo continuance intention. Third, players’ trust in their leader has a positive effect on Taekwondo continuance intention. The mediating effect of leader trust with the justice and Taekwondo continuance was proved to exist through the research, which suggests that Taekwondo leaders perform fair leadership to improve the players’ leader trust and Taekwondo continuance.
거골의 골연골 병변의 원주형 생검에서 관절 연골과 연골하 골의 조직병리학적 변화
이호승,장재석,이종석,조경자,이상훈,정홍근,김용민,Lee, Ho-Seong,Jang, Jae-Suk,Lee, Jong-Suk,Cho, Kyung-Ja,Lee, Sang-Hoon,Jung, Hong-Keun,Kim, Yong-Min 대한족부족관절학회 2006 대한족부족관절학회지 Vol.10 No.2
Purpose: This study was aimed at elucidating the pathogenesis of talar osteochondral lesion by analyzing the histopathological findings. Materials and Methods: Twenty specimens from 20 patients who underwent surgical treatment for talus osteochondral lesions were studied. Preoperative MRI images including T1, T2, and stir images were taken and cases were classified according to modification of the Anderson's classification. There were 5 cases of MRI group 1, 6 cases of group 2, 7 cases of group 3 and 2 cases of group 4. A full thickness osteochondral plug including the osteochondral lesion of the talus was harvested from each patient and reviewed histopathologic changes of osteochondral fragment using H-E staining. Mean diameter of specimens was 8.5 mm and mean depth was 10.3 mm. Pathologic changes of articular cartilage and subchondral bone were observed. Subchondral bone was divided into superficial, middle and deep zones according to depth. Cartilage formation, trabecular thickening and marrow fibrosis were observed in each zone. Results: There were detachment of the joint cartilage at the tidemark in 16 cases of 20 cases and the separated cartilages were almost necrotic on the histopathologic findings. Cartilage formation within subchondral bone was discovered beneath the tidemark in 12 cases. Trabeculae were increased and thickened in 17 cases. These pathologic changes were similar to fracture healing process and these findings were more conspicuous near the tidemark and showed transition to normal bone marrow tissue with depth. No correlation between the pathological progression and MRI stages was found. A large cyst shown on MRI's was microscopically turned out to be multiple micro-cysts accompanied by fibrovascular structure and newly formed cartilage tissue. Conclusion: The histopathologic findings of osteochondral lesions are detachment of overlying cartilage at the tidemark and subsequent changes of subchondral bone. Subchondral bone changes are summarized as cartilage formation, marrow fibrosis and trabecular thickening that mean healing process following repeated micro fractures of trabecular. These osteochondral lesions should have differed from osteochondral fractures.
대퇴골두 무혈성괴사에서 시행한 핵심감압술 및 압박 골이식술
정광환 ( Kwang Hwan Jung ),장재석 ( Jae Suk Jang ),최영락 ( Young Rock Choi ) 대한고관절학회 2005 Hip and Pelvis Vol.17 No.4
목적: 대퇴골두 무혈성 괴사에서 핵심 감압술 및 압박 골이식술의 결과를 괴사부위의 크기와 위치에 따라 알아보고자 하였다. 대상 및 방법: 1996년 1월부터 2002년 9월까지 대퇴골두 무혈성괴사로 진단받고 핵심 감압술과 압박골이식술을 시행한 후 최소 2년이상 추시 가능했던 64명, 95예의 고관절을 대상으로 하였다. 남녀수는 각각 46명(71예), 18명(24예)였고, 나이는 평균 36.6(16~53)세였으며, 추시기간은 평균 43.3(24~95)개월이었다. 술 전 자기공명영상 소견상 괴사의 크기, 위치에 따른 수술 결과의 차이를 x2 -test와 Fisher`s exact test를 이용하여 비교 분석하였다(p<0.05). 결과: 임상적 진행은 21예(22.1%)에서 발생하였으며, 그 중 괴사의 크기가 50%이상인 경우가 17예(80.9%)였고, 모든 예에서 외측에 위치하였다. 방사선학적 진행은 51예(53.7%)에서 발생하였으며, 그 중 괴사의 크기가 50%이상인 경우가 28예(54.9%), 외측에 위치한 경우가 50예(98.0%)였다. 임상적 실패는 16예(16.8%)에서 발생하였으며, 그 중 괴사의 크기가 50%이상인 경우가 13예(81.3%)였고, 모든 예에서 외측에 위치하였다. 결론: 1. 괴사 부위의 크기는 클수록, 괴사 위치가 외측에 위치할수록 술 후 결과가 좋지 않았다. 2. 방사선학적 진행은 전체의 53.7%에서 발생하였으나, 인공 고관절 전치환술로 전환된 것은 16.8%에서만 발생한 것은 압박 골이식술(impaction bone graft)에 의해 대퇴골두가 강해진 것으로 생각한다. 3. 보다 더 긴 추시관찰이 필요하리라 생각한다. Purpose: To analyse the results of a core decompression and impaction bone graft according to necrosis size and location. Materials and Methods: Between Jan. 1996 and Sep. 2002, 64 patients (95 hips) who were followed up for a minimum of 2 years were studied. Forty-six (71 hips) were male and 18 (24 hips) were female. The mean age was 36.6 (16-53) years and the average follow up was 43.3(24~95) months. The surgical results were analysed using x2-test and Fisher`s exact test according to necrosis size and location. Results: Clinical progression was seen in 21 cases (22.1%), of which 17 cases had a lesion more than 50%. All 21 cases were located laterally. Radiologic progression was seen in 51 cases (53.7%), of which 28 cases had a lesion size involving more than 50%, and 50 cases were located laterally. Clinical failure was seen in 16 cases (16.8%), of which 13 cases had a lesion size involving more than 50%, and all 16 cases were located laterally. Conclusion: 1. The surgical results were worse when the lesion was larger and laterally positioned. 2. Radiologic progression was seen in 53.7% of cases, but conversion to total hip arthroplasty was seen in 16.8%, which was due to increased strength of femoral head. 3. To confirm these study results, longer follow up study is needed.