• 한국운동역학회지
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• 제21권4호
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• pp.467-477
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• 2011

This study was performed to investigate the effects of tibial rotation while going up stair on muscle activity of vastus medialis oblique and vastus lateralis, and on patellar displacement. The subjects included 30 people (male: 15; female: 15) who were randomly assigned to the tibial internal-rotation, neutral-rotation, and external-rotation groups. The subjects went up the stair while performing the assigned rotations, and the rotation of the hip and the displacement of the patella were measured using a 3D motion analyzer. In addition, the maximum voluntary isometric contraction (MVIC) of the vastus medialis oblique and vastus lateralis were measured using surface electromyogram. On the tibial internal rotation, the hip rotation significantly appeared in the same direction and so did on the tibial neutral and external rotations(p<.001). Although the MVIC of the vastus medialis oblique and vastus lateralis did not significantly differ by tibial rotation during the stair ascent, the MVIC of the vastus medialis oblique was higher than that of the vastus lateralis during the internal and neutral rotations (p<.05). In addition, during the stair ascent, the displacement of the patella was more significant during the tibial external rotation than during the tibial internal and neutral rotations(p<.001). Thus, patients with patellofemoral pain are required to be considered the effects of tibial rotation for their rehabilitation.

• Physical Therapy Rehabilitation Science
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• 제5권2호
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• pp.95-100
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• 2016

Objective: The purpose of this study was to investigate effects of hand grip strength on the muscle activation of shoulder joint in breast cancer patients. Design: Cross-sectional study. Methods: Ten breast cancer patients who agreed to active participation were included. These patients were operated with either conservative surgery or segmental mastectomy, and then were treated with radiation therapy and chemotherapy. The activity of the upper trapezius, lower trapezius, supraspinatus and serratus anterior muscle were measured using surface electrodes during 4 hand gripping tasks (lowered their arms in standing position, 0%, 30%, and 50% of maximum voluntary contraction) in the scapular abduction plane. Results: The results were analyzed using a one-way repeated measures ANOVA. There was a significant difference in the lower trapezius and supraspinatus muscles according to grip strength, lower trapezius and supraspinatus muscles showed significantly difference according to grip strength (p<0.05). The result of the muscle activation according to hand strength (0%, 30%, and 50%) it showed a significant difference between the upper trapezius and supraspinatus in 0% grip strength (p<0.05). In addition, it did not show a significant difference between muscles in 30%, 50% hand strength. Conclusions: This study showed an increase in shoulder muscle activation with increasing hand grip strength with the upper trapezius muscle being more activated than other muscles in 0% grip strength. The finding of this study suggests usefulness for development of preventative measures and rehabilitation strategies for increasing shoulder motor function in patients with breast cancer.

• 한국운동역학회지
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• 제25권1호
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• pp.103-111
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• 2015

Objective : The purpose of this study was to evaluate the effect for running shoes with resilience of midsole on biomechanical properties. Methods : 10 healthy males who had no history of injury in the lower extremity with an average age of 26.5 year(SD=1.84), height of 172.22 cm(SD=4.44) and weight of 67.51 kg(SD=6.17) participated in this study. All subjects ran on the treadmill wearing three different running shoes. Foot pressure data was collected using Pedar-X system(Novel Gmbh, Germany) operating at 100 Hz. Surface EMG signals for biceps femoris, rectus femoris, vastus lateralis, medial lateralis, tibialis anterior, medial gastrocnemius, soleus and peroneus longus were acquired at 1000 Hz using Bignoli 8 System(Delsys Inc., USA). To normalize the difference of the magnitude of muscle contractions, it was expressed as a percentage relative to the maximum voluntary contraction (MVC). The impact resilience of the midsole data was collected using Fastcam SA5 system(Photron Inc., USA). Collected data was analyzed using One-way ANOVA in order to investigate the effects of each running shoes. Results : TPU midsole was significantly wider in contact area than EVA, TPE midsole in midfoot and higher in EMG activity than EVA midsole at biceps femoris. TPE midsole was significantly wider in contact area than EVA midsole in rearfoot and higher in peak pressure than EVA midsole in forefoot. EVA midsole was significantly higher in EMG activity than TPU midsole at tibia anterior. In medial resilience of midsoles, TPE midsole was significantly higher than EVA, TPU midsole. Conclusion : TPU midsole can reduce the load on the midfoot effectively and activate tibialis anterior, biceps femoris to give help to running.

• 한국전문물리치료학회지
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• 제27권2호
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• pp.93-101
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• 2020

Background: For performing various movements well, cooperation between the muscles around the scapula and shoulder has been emphasized. Taping has been widely used clinically as a helpful adjunct to other physiotherapy methods for shoulder pathology and dysfunction treatment. Previous studies have evaluated the effect of taping techniques using dynamic tapes on shoulder function and pain. However, no study investigated the electromyographic (EMG) changes in the shoulder muscles. Objects: This study aimed to investigate the effect of the upper limb offload taping technique using a dynamic tape on EMG activities of the upper trapezius (UT), lower trapezius, serratus anterior (SA), and middle deltoid (MD) muscles during scaption plane elevation. Methods: A total of 26 healthy subjects (19.85 ± 6.40 years, male = 20) volunteered to participate in this study. The subjects were instructed to perform scaption elevation with and without dynamic taping on the shoulder. Shoulder elevation strength tests were performed at 100%, 75%, 50%, and 25%, for the maximal isometric contraction force. Results: There were statistically significant interaction effects between the taping application and shoulder scaption elevation force in EMG activities in the UT (p < 0.05) and MD (p < 0.05). EMG activities in the UT showed significant increases in 50%RVC (reference voluntary contraction, p < 0.05) and 25%RVC (p < 0.01). Furthermore, the EMG activity of the SA significantly increased in 50%RVC (p < 0.01) and 25%RVC (p < 0.01) after dynamic taping. For the MD, the EMG activity level significantly decreased in 100%RVC (p < 0.05). Conclusion: These results indicated that upper limb offload dynamic taping application affects the muscle activities of some shoulder muscles depending on different scaption elevation strength levels. Therefore, we suggest that the upper limb offload dynamic taping can be applied to the shoulders when patients need middle deltoid inhibition or upper trapezius facilitation, such as patients with shoulder impingement syndrome.

• The Journal of Advanced Prosthodontics
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• 제4권2호
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• pp.61-71
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• 2012

PURPOSE. To compare the changes in the occlusal vertical dimension, activity of masseter muscles and biting force after insertion of immediate denture constructed with conventional, tooth-supported and Implant-supported immediate mandibular complete denture. MATERIALS AND METHODS. Patients were selected and treatment was carried out with all the three different concepts i.e, immediate denture constructed with conventional (Group A), tooth-supported (Group B) and Implant-supported (Group C) immediate mandibular complete dentures. Parameters of evaluation and comparison were occlusal vertical dimension measured by radiograph (at three different time intervals), Masseter muscle electromyographic (EMG) measurement by EMG analysis (at three different positions of jaws) and bite force measured by force transducer (at two different time intervals). The obtained data were statistically analyzed by using ANOVA-F test at 5% level of significance. If the F test was significant, Least Significant Difference test was performed to test further significant differences between variables. RESULTS. Comparison between mean differences in occlusal vertical dimension for tested groups showed that it was only statistically significant at 1 year after immediate dentures insertion. Comparison between mean differences in wavelet packet coefficients of the electromyographic signals of masseter muscles for tested groups was not significant at rest position, but significant at initial contact position and maximum voluntary clench position. Comparison between mean differences in maximum biting force for tested groups was not statistically significant at 5% level of significance. CONCLUSION. Immediate complete overdentures whether tooth or implant supported prosthesis is recommended than totally mucosal supported prosthesis.

• 인지과학
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• 제30권4호
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• pp.175-197
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• 2019

고차적 사고를 요구하는 글쓰기는 배운 지식을 활용하고 발전시키게 한다. 학습 장면에서 글쓰기를 더 많이 활용하기 위해서는 동료평가를 도입하는 동시에 동료평가의 정확도를 높일 필요가 있다. 본 연구에서는 동료평가의 정확도를 높이는 방안으로, 평가 기준에 대해 학생들끼리 토론하게 하거나 전문가의 평가를 참고하도록 하는 두 방안을 탐색하였다. 대학생 150명을 대상으로 한 실험 결과, 동료평가 후 전문가의 평가를 참고했던 집단이 평가했던 글을 다시 평가할 때는 평가 정확도가 향상되었지만, 새로운 글을 평가할 때는 향상되지 않았다. 반면에, 동료평가 후 평가 기준에 대하여 토론을 진행했던 집단은 평가했던 글을 다시 평가할 때는 평가 정확도가 향상되지 않았지만, 새로운 글을 평가할 때는 향상됨을 발견하였다. 또한 토론 집단의 경우 평가 기준에 대한 토론에서 총 발언 수가 많아질수록 평가 정확도가 높아졌다. 이상의 결과는 평가 기준에 대한 토론에서 적극적이고 자발적인 논의가 활발할수록 이후 동료평가의 정확도가 향상됨을 시사한다.

• 한국방재안전학회논문집
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• 제6권1호
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• pp.9-17
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• 2013

정부부처는 지역사회 내 크고 작은 재난 및 안전사고를 사전에 예방하여 사망자 및 재해자수를 경감시키고 기능적으로 안전을 개선하기 위한 목적으로 행정안전부의 안전모니터링시스템, 소방방재청의 재난전조정보시스템, 국토해양부의 시설위험 신고시스템, 환경부의 환경감시시스템 등을 운영하고 있으며, 대부분 안전 위험요소를 신고하면 이를 개선하여 줄 수 있는 다양한 민원시스템을 갖추고 있다. 본 연구에서는 강동구에 거주하며 방재안전관리사 마스터교육과정을 이수한 전문자원봉사자가 행정안전부 안전모니터링시스템의 핵심이라 할 수 있는 안전모니터링활동을 2012년부터 강동구 최초로 지속적인 신고활동을 해오며 안전모니터봉사단의 전반적인 운영실태를 조사하였으며, 강동구를 서울시 안전모니터링 표준모델로 설정하여 강동구 및 개인 신고 및 제보활동사례의 통계자료분석을 통한 문제점을 도출하여 지역사회특성에 맞는 안전모니터링활동의 효율적인 운영시스템 개선방안을 제시하였다.

• 한국비블리아학회지
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• 제23권4호
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• pp.219-237
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• 2012

학교도서관의 양적 증가로 학교도서관 자원봉사의 중요성이 더욱 강조되고 있다. 이에 본 논문은 학교도서관 자원봉사의 운영에 대한 현황을 파악하여 문제점과 대응방안을 제시하고, 이를 바탕으로 학교도서관 자원봉사의 활성화에 기여하는데 목적이 있다. 이를 위하여, 첫째, 문헌연구를 통하여 학교도서관과 자원봉사에 대한 이론적 배경을 바탕으로 학교도서관의 자원봉사에 대한 의의를 살펴보고, 둘째, 서울특별시 동작구와 관악구를 관할하는 동작교육지원청 관내의 초등학교 가운데 교육복지특별지원사업 대상인 12개 학교를 대상으로 학교도서관의 사서와 자원봉사자를 대상으로 설문조사를 실시하였으며, 셋째, 설문조사를 보완하기 위하여 설문조사 대상인 학교도서관의 사서 가운데 8명을 대상으로 면담조사를 실시하였다. 그리고 이를 바탕으로 학교도서관 자원봉사의 문제점과 활성화 방안을 도출함으로써 학교도서관 자원봉사의 이해에 일조하고자 하였다.

• Journal of Oral Medicine and Pain
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• 제21권2호
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• pp.293-304
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• 1996

The purpose of this study was to investigate the peak electromyographic activity(EMG) and time intervals in firing sequence of Anterior temporalis(TA) and Masseter(MM) on clenching, the number of tender points in the head and neck muscles, the occlusal contact state on clenching, and their relationship. 78 patients with Temporomandibular Disorders(TMDs) participated and were classified into articular or muscular group by clinical signs and symptoms. BioEMG$\textregistered$ of integrated masticatory function analyzer, Biopak$\textregistered$ system(Bioresearch Inc., USA), was used to measure EMG and related items, and T- Scan$\textregistered$(Tekscan, USA), computerized occlusal analyser, was used to record occlusal contact state on maximum voluntary clenching. EMG and occlusal contact were synchronously recorded and analysed with SAS Statistical program. The results of this study were as follows : 1. In total subjects, EMG of TA was lower than that of MM in articular group but in muscular group, vice versa, As a result, the ratio TA to MM was significantly different between the two groups. no significant differece. 3. The number and force of occlusal contact were more in articular group, but there was no significant difference in Total Left-Right statistics(TLR) between the two groups. 4. In unilaterally affected subjects for muscle function, no significant difference was observed between the affected side and the contralateral side in articular group, but in muscular group, the item of the number of tender points showed significant difference. However, for occlusal contact items, contact force in articular group shows significant difference between the two sides. 5. Rate of coincidence of the first firing side of TA with affected side or preferred chewing side was higher and not different between the two groups, but no significant correlation was showed between the first firing side and the first occlusal contact side.

• 국제물리치료학회지
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• 제5권2호
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• pp.757-763
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• 2014

The purpose of this study is to observe the effect of elasticity of taping on ankle muscles'activity and endurance after plyometric training that easily causes ankle injury, and provide baseline data for physical therapy intervention methods. The study subjects are 24 male students in their 20s who attend N University in Choongnam. They were divided into three groups; 8 subjects in the elastic taping group, 8 in the non-elastic taping group, and 8 in the non-taping group(control group). They had plyometric training for 6 weeks. After the training, this study measured their maximum voluntary isometric contraction(MVIC) and muscle endurance of the muscles around ankle joint. The experiment result is as follows. After the training, all three groups showed improvement in muscle strength and endurance. The elastic taping group showed insignificant improvement in muscle strength but significant increase in muscle endurance in plantarflexion. In dorsiflexion, both muscle strength and endurance increased significantly. The non-elastic taping group showed insignificant improvement in muscle strength but significant increase in muscle endurance in plantarflexion. Taping during plyometric training had a little or insignificant effect on muscle endurance and strength compared to the non-taping group.