• 대한인간공학회지
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• 제30권5호
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• pp.613-619
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• 2011

Objective: The purpose of this study is to compare the muscle activities of lumbar and lower extremity muscles between left and right sides using EMG(Electromyogram) when patients are transferred by physical therapists. Background: Asymmetrical lift was recognized as a major cause of musculoskeletal disorder. Several studies show that physical therapists' transferring patients needs caution as it could cause a lumbar pain to patients but there is not sufficient data to support. Method: Forty healthy rehabilitation hospital physical therapists joined for this study. The subjects were transferred from wheelchair to treatment mat(from left to right) by connecting the EMG device to the patients' body both on erector spine and rectus fermoris. At the moment when subjects were being transferred, the EMG device collected data from both erector spine and rectus femoris and it was normalized as %MVC. Then the EMG data was statistically analyzed using paired t-tests. Results: The EMG data show that the left erector spinae and rectus femoris are more activated than right erector spinae and rectus femoris in all position(p<.05) in a significant degree. Conclusion: The result implies that physical therapists' asymmetrical lifting when patients are transferred by them has a potential cause of musculoskeletal disorder of patients. Further studies will be conducted to find out a same tendency in other muscles of a body and to see if there are other factors to affect to patients during asymmetrical lifting. Application: These results can be used to provide baseline information for more understanding to asymmetrical lift loading.

• 문화기술의 융합
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• 제5권2호
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• pp.337-344
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• 2019

본 연구는 경남소재 H대학에 재학 중인 20~30대를 대상으로 연구목적, 연구내용, 측정방법을 설명한 후 본 실험에 참여하기로 동의한 남녀 16명을 대상으로 실시하였다. 스쿼트 운동시 세 가지 조건, 즉 선자세, 60도 굴곡자세, 90도 굴곡자세 저항에 따른 넙다리곧은근, 가쪽넓은근, 안쪽넓은근, 앞정강근, 장딴지근 활성도의 전후차를 비교하기 위하여 대응표본 T-검정을 실시하였고, 저항에 따른 각 근육을 비교하기 위하여 반복측정에 의한 분산분석(repeated measured ANOVA)을 실시하였다. 60도 무릎관절 굴곡, 90도 무릎관절 굴곡시 앞정강근을 제외한 넙다리곧은근, 안쪽넓은근, 가쪽넓은근, 장딴지근에서 통계학적으로 근활성도가 증가하는 것으로 나타났고, 90도 무릎관절 굴곡시에는 안쪽넓은근에 비해 가쪽넓은근의 근활성도의 값이 큰 것으로 나타나 슬개대퇴동통증후군에도 좋지 않은 영향을 미치는 것으로 나타났다. 이 연구를 바탕으로 키높이 깔창을 착용한 상태에서의 운동의 슬개대퇴동통증후군을 악화시킬 수 있으므로 키높이 깔창을 착용하지 않는 것이 좋을 것으로 사료된다.

• 대한의용생체공학회:의공학회지
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• 제36권2호
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• pp.43-47
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• 2015

Osteoarthritis is the most common chronic joint disease in the world. With its progression, cartilage thickness tends to diminish, which causes severe pain to human being. One way to examine the stage of osteoarthritis is to measure the cartilage thickness. When it comes to inter-subject study, however, it is not easy task to compare cartilage thickness since every human being has different cartilage structure. In this paper, we propose a method to assess cartilage defect using MRI inter-subject thickness comparison. First, we used manual segmentation method to build accurate atlas images and each segmented image was labeled as articular surface and bone-cartilage interface in order to measure the thickness. Secondly, each point in the bone-cartilage interface was assigned the measured thickness so that the thickness does not change after registration. We used affine transformation and SyGN to get deformation fields which were then applied to thickness images to have cartilage thickness atlas. In this way, it is possible to investigate pixel-by-pixel thickness comparison. Lastly, the atlas images were made according to their osteoarthritis grade which indicates the degree of its progression. The result atlas images were compared using the analysis of variance in order to verify the validity of our method. The result shows that a significant difference is existed among them with p < 0.001.

• 한국전자통신학회논문지
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• 제16권5호
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• pp.991-1000
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• 2021

비침습식 혈당 검출 기술 중 광학 기법은 생물학적 매체를 통과할 때 빛의 반사와 흡수 및 산란 특성을 이용하는 방법으로 통증이나 측정의 불편함을 감소시키고 감염 위험이 없어 혈당 검출 연구의 주요 흐름이 되고 있다. 이 중 근적외선 분광법은 혈당 분자와 유사한 흡수 기능을 공유하는 단백질과 산의 간섭들로 감지된 신호 분석 시 복잡성이 증가하는 단점이 있다. 본 연구에서는 근적외선의 피부 흡수로 발생할 수 있는 혈당검출 기능저하를 완화시키기 위해 다중 근적외선 대역의 비침습식 센서시스템을 설계하고 제작하였다. 제작한 시스템의 검증을 위해 혈액 조사를 실시하였으며, 혈액 내의 혈당 반응 정도를 스펙트럼 데이터로 수집하고, 데이터와 혈당과의 상관관계 관점에서 정량적으로 본 연구의 성과를 검증하였다.

• Clinics in Shoulder and Elbow
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• 제27권2호
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• pp.149-159
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• 2024

Background: In rotator cuff repair, the long head of the biceps tendon (LHB) is commonly used as graft material. However, factors influencing LHB tear severity are poorly understood, and predicting grade II LHB tears is challenging. This study aimed to identify these factors preoperatively. Methods: The demographics, medical parameters, and pain severity of 750 patients who underwent arthroscopic surgery from January 2010 to February 2021 were evaluated to determine the factors associated with LHB tear severity and grade II tears. Both overall and large-to-massive rotator cuff tear (RCT) cohorts underwent ordinal and binary logistic regression analyses. Predictive accuracy for grade II LHB tears was determined using the area under the receiver operating characteristic curve (AUC). Results: In the overall cohort, high-sensitivity C-reactive protein (hs-CRP) >1 mg/L (P<0.001), subscapularis tear (P<0.001), hypothyroidism (P=0.031), and the tangent sign (P=0.003) were significantly associated with LHB tear severity, and hs-CRP>1 mg/L, subscapularis tear, and Patte retraction degree were significantly associated with grade II LHB tears (P<0.001). In the large-to-massive RCT cohort, hs-CRP>1 mg/L, hypertension, and age ≥50 years (P<0.05) were significantly associated with LHB tear severity, and hs-CRP>1 mg/L (P<0.001) and hypertension (P=0.026) were significantly associated with grade II LHB tears. In both cohorts, hs-CRP >1 mg/L demonstrated good predictive accuracy for grade II LHB tears (AUCs: 0.72 and 0.70). Conclusions: Serum hs-CRP >1 mg/L is associated with LHB tear severity and serves as a reliable predictor of grade II LHB tears, facilitating preoperative assessment of the LHB as potential graft material in arthroscopic rotator cuff repair. serves as a reliable predictor of grade II LHB tears, facilitating preoperative assessment of the LHB as potential graft material in arthroscopic rotator cuff repair. Level of evidence: III.

• 대한한방내과학회지
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• 제41권4호
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• pp.624-643
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• 2020

Objectives: The aim of this study was to analyze the correlation between Ryodoraku and two pattern-identification questionnaires in patients with Burning Mouth Syndrome (BMS). Methods: The study participants were 30 patients with BMS who visited the Oral Diseases Clinic of Kyung Hee Oriental Medicine Hospital from June to November, 2019. The Ryodoraku test and two pattern-identification questionnaires were administered to all patients. Measurements included the average Ryodoraku score, which is called the Total Average (TA), and each score on the Ryodoraku point scale. The degree of Yin-deficiency, Qi-stagnation, and pain were assessed with the Yin-deficiency Questionnaire (YDQ), Qi-stagnation Questionnaire (QSQ), and Visual Analogue Scale (VAS), respectively. Results: The average TA score was 29.90. The LF5 (p=0.013) and RF5 (p=0.016) scores were lower than the TA scores, and the RH5 (p=0.020) and RH6 (p=0.006) scores were higher than the TA scores. A negative correlation was detected between the YDQ scores and the LH1 (r=-0.366, p=0.046), LH2 (r=-0.507, p=0.004), LH3 (r=-0.374, p=0.042), RH1 (r=-0.361, p=0.050), RH2 (r=-0.403, p=0.027) points. The LF5 (p=0.050) and RF2 (p=0.048) scores were lower in the patients with Qi-stagnation patients than without Qi-stagnation. Conclusions: Our results suggest that low TA and Ryodoraku scores on LF5 and RF5 and high Ryodoraku scores on RH5 and RH6 could be quantitative indicators for the diagnosis of BMS. The LH1, LH2, LH3, RH1, RH2, LF5, and RF2 scores could also be an indicators for diagnosis of Yin-deficiency and Qi-stagnation in patients with BMS.

• Journal of Chest Surgery
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• 제33권9호
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• pp.738-743
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• 2000

Background: Video-assisted thoracic surgery(VATS) is being used as a therapeutic modality in many diseases in which thoracotomy has been used. We studied that the VATS can substitute the thoracotomy in benign esophageal disease. Material and Method: Group I (n=18) underwent video-assisted thoracic surgery, and group II(n=19) thoracotomy. Group I includes 14 leiomyomas and 4 achalasias. Group II includes 16 leiomyomas and 3 achalasias. Operative technique is enucleation in the leiomyoma and modified Heller's myotomy in the achalasia. Analyzing factors of operation-efficacy are anesthetic time, operation time, hospital stay, chest tube drainage amount and chest tube removal day. The degree of the postoperative pain is assessed by the frequency of opioid analgesics injection. Result: There was no death in both groups. There were 5 complications in the group I and 2 in the group II. Prolonged pleural effusion and restenosis of achalasia occurred to 1 patient in each group. In the group I, there were 1 temporaty vocal cord palsy and 2 mucosal tear leading to thoracotomy. There were no differences in anesthesia time, operation time, hospital stay, total chest tube drainage amount, chest tube removal day and frequency of opioid analgesics injection. The amount of the chest tube drainage at POD 1 day was significantly lower in group I(155.6$\pm$77.8cc) than in group II(572.8$\pm$280.1cc)(p<0.05). Conclusion: The results of our data showed that video-assisted thoracic surgery for benign esophageal disease is as effective as thoracotomy and in addition, cosmetic effect is much better. We concluded VATS may be a substitute for thoracotomy in benign esophageal disease.

• Physical Therapy Rehabilitation Science
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• 제5권2호
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• pp.84-88
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• 2016

Objective: Generally, it is known that there is a correlation between excessive calcaneus eversion and a patient with low back pain and it also affects pelvic alignment. However, there are not enough studies that show calcaneal eversion having an effect on the alignment of the trunk. Design: Cross-sectional study. Methods: A 3-dimensional motion analysis system was used to assess the lower limbs, pelvic alignment, and trunk alignment with increased unilateral and bilateral calcaneal eversion in twenty-one subjects. All subjects were asked to maintain a static posture for seven seconds on a wedge three times per posture for measurement and analysis purposes. The wedge used in the process was a lateral wedge with a 10-degree tilt to the lateral direction. To unify all of the subjects' foot position, the front and inner side of the wedge were marked. The height of the tilted wedge's inner side and flat wedge were balanced equally in order to be able to maintain the lateral part of the foot to the same height when producing an increased calcaneal eversion. Results: Comparing the changes in trunk and pelvic alignment in accordance to calcaneal eversion for each posture, there was a significant different in the X and Y-axis for each posture, but not in the Z-axis (p<0.05). Thus, it can be confirmed that calcaneal eversion in the sagittal plane and frontal plane may have and effect on the pelvis and the trunk. Conclusions: Postures with increased bilateral and unilateral calcaneal eversion has an effect on pelvic alignment, but does not cause any changes in trunk alignment.

• Journal of Chest Surgery
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• 제40권5호
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• pp.369-375
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• 2007

배경: 새가슴 환자들은 돌출된 앞가슴으로 인해 옷을 입어도 표시가 나서 미용적인 불편함을 호소한다. 이의 치료법으로는 돌출된 늑연골을 절제하는 외과적 수술법을 시행하는데 이는 광범위한 수술 상처 및 통증, 수술 후의 합병증 등을 유발할 수가 있다. 이에 비수술적 치료법으로 교정기를 이용한 치료법을 시행하였으며 교정을 통한 치료의 유용성과 효과 등을 평가하고자 본 연구를 시행하였다. 대상 및 방법: 2001년 1월부터 2005년 12월까지 새가슴으로 본원에서 교정기를 이용한 치료를 시행 받은 환자들 중 하루 종일 착용을 한 환자들 109명을 대상으로 진행을 하였다. 교정을 시작 후 $6\sim9$ 개월이 지난 후 환자의 만족도를 조사하였다. 만족도의 평가는 1에서 4까지로 하여 1은 전혀 교정이 안된 경우, 2는 아주 약간 교정이 된 경우, 3은 어느 정도의 교정 효과는 있으나 현저히 좋아졌다고는 생각하지 않는 경우, 4는 아주 현저히 교정이 되었다고 생각하는 경우로 하였다. 어린이의 경우는 보호자의 주관적인 평가를 받았고 중학생 이상의 연령에서는 환자가 직접 만족도를 평가하도록 하였다. 결과: 전체적인 만족도의 평균 점수는 $3.93{\pm}0.33$이었다. 또한 109명 중 6명(5.5%)에서 교정기를 제거 후 재발이 있었으며 6명 중 4명은 본인이 임의로 교정을 중단한 환자였다. 6명 모두가 다시 교정기 착용 후 3개월 이내에 재교정 효과를 보았다. 압박 교정의 합병증으로는 109명의 환자들에게서 모두 나타난 처음 교정기를 착용할 때 느끼는 불편함, 76명(69.7%)에서 나타난 교정기로 인한 피부발진과 16명(5.5%)에서 나타난 교정기의 과도한 압박으로 인한 피부 변색 외에 특별한 부작용은 없었다. 피부발진과 피부 변색은 교정기 제거 후 수개월 내에 정상으로 돌아왔다. 결론: 새가슴 환자들에게 교정기를 이용한 비수술적 치료법은 어린이와 청소년들에서 별다른 부작용 없이 미용적으로 효과가 있음을 알 수 있었다. 교정기를 이용한 비수술적 치료는 마취와 수술에 대한 두려움 등으로 수술을 기피하는 새가슴 환자들에게 수술의 대안치료법으로 도움이 되리라 생각된다. 그러나 정확한 치료효과와 재발에 관하여서는 장기적인 추적 관찰이 필요하다.

• 한국콘텐츠학회논문지
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• 제15권8호
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• pp.313-325
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• 2015

본 연구는 산재경험 고령자의 경제적 노후준비에 영향을 미치는 요인을 앤더슨모형을 적용하여 분석하고, 과거 산재당시 종사상지위에 따라 정규직 근로자와 비정규직 근로자로 구분해 경제적 노후준비의 영향요인을 분석하고자 하였다. 이를 위해 산재보험패널조사(PSWCI)의 1차년도 자료를 이용하여 로지스틱 회귀분석을 실시하였다. 연구결과, 선행요인에서는 학력이 높고 정규직인 근로자가 비정규직인 여성 근로자에 비해 경제적 노후준비 가능성이 높게 나타났다. 자원요인에서는 정규직, 비정규직 근로자 모두 근로소득이 많을수록 노후준비 가능성이 높게 나타났으나, 국민연금 가입여부는 경제적 노후준비에 도움을 주지못하였다. 비정규직 근로자에게는 건강보험 가입이 경제적 노후준비에 영향을 미치고 있었다. 욕구요인에서는 정규직과 비정규직 근로자 모두 산업재해로 인한 통증이 일상 및 삶을 방해하는 정도가 높을수록 경제적 노후준비에 취약함을 확인하였다. 이러한 연구결과를 토대로 하여 정책적 함의를 제시하였다.