• 한국산학기술학회논문지
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• 제18권5호
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• pp.355-365
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• 2017

본 연구의 목적은 급성기 뇌졸중 환자를 대상으로 수공예 작업치료 프로그램 활동을 시행하였을 때 인지기능과 손 기능에 미치는 효과를 알아보고, 추후 급성기 뇌졸중 환자의 중재방법에 대한 유용한 자료를 제공하는 것이다. 본 연구의 진행은 서울 경기도에 위치한 A종합병원, B재활병원에 입원 중인 뇌졸중 환자 30명을 대상으로 2016년 3월부터 2016년 11월까지 두 그룹을 무작위 할당한 후 실험군에는 수공예 프로그램 활동을 4주 동안 주 2회, 30분간 적용하고 그룹 간 비교를 실시하였다. 치료 전 후에 뇌졸중 환자의 인지기능과 손 기능을 평가하기 위해서 사용한 평가도구는 Box & Block Test, Jebsen-Taylor Hand Function Test, Neurobehavioral Cognitive Status Examination(NCSE), Trail-Making Test이다. 결론적으로 중재 전 후 비교에서 수공예 프로그램 활동군의 손 기능 평가가 유의하게 향상되었고(p<.05), 인지기능도 유의하게 향상되었다(p<.05). 본 연구의 결과를 통해서 수공예 프로그램 활동이 급성기 뇌졸중 환자의 인지기능과 손 기능 향상에 더 효과적임을 파악한 점에서 연구의 의의를 지니며, 향후 급성기 뇌졸중 환자의 작업치료 중재 프로그램의 개발 및 적용 시 기초자료로 의미있게 활용될 수 있을 것이다.

• 한국전문물리치료학회지
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• 제29권2호
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• pp.117-123
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• 2022

Background: Push-up are effective exercises for shoulder stability. Previous studies have documented the effects of support plane and hand position and width on muscle activities during a push-up. Objects: This study aimed to investigate the changes in muscle activities in the upper extremity when performing the standard and the knee-flexed push-up with different hand shapes. Methods: A total of twenty-six healthy males participated in this study. Three different hand shapes (finger abduction, finger adduction, and fists) and two types of push-up posture (standard and knee-flexed push-up) were set as the independent variables. Electrograms were used to measure the muscle activity of the upper trapezius (UT), triceps brachii (TB), pectoralis major (PM), and serratus anterior (SA). Each participant performed the randomly assigned push-up to the sound of the metronome. The mixed-effect linear regression model was used to detect the changes in muscle activities after changing the hand shape and push-up posture. Statistical significance was set at α = 0.05. Results: The UT muscle activity was statistically significantly higher when performing push-up with fists than finger abduction (p = 0.035) or finger adduction (p = 0.044). During the standard push-up, the muscle activity in all muscles was that the push-up with fists showed the highest muscle activity compared to the finger abduction (p < 0.01) and finger adduction (p < 0.01). Regardless of the shape of the hand, UT had the lowest muscle activity compared to other muscles (p < 0.001). In contrast, the SA muscle had the highest muscle activity among four muscles during the standard push-up. Conclusion: Based on the results of this study, we suggest hand shape is related to the difficulty level of push-up either in the standard or the knee-flexed push-up, especially in the push-up with fists. In addition, knee push-up can be recommended as shoulder muscle-strengthening exercises for individuals with low shoulder muscle strength.

• 한국환경보건학회지
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• 제35권4호
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• pp.278-286
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• 2009

The total of 181 students in Seoul were made up questions to analysis hand washing awareness from 2007 to 2008. And their hands were sampled to isolate Staphylococcus aureus for testing antibiotic resistance. The average of hand washing frequency was $2.8{\pm}2.6$ per day in their schools. The rates of the students washing hands before eating food, after outdoor activity and after using bathroom were 22.2%, 24.4% and 49.4%, respectively. The rate of students washing hand less than 20 seconds was 64.4%. The students of 43.3% answered that they thought they were washing hands well. The middle school students were worse than elementary and high school students were aware of the frequency, duration and activity of hand washing. The isolation rate of S. aureus on the hands was 29.4%. The isolates were resitant to ampicillin (28.6%), chloramphenicol (6.1%), erythromycin (31.0%), gentamycin (2.0%), penicillin (79.6%) and tetracycline (6.1%) of 17 antibiotics tested. They were all sensitive to oxacillin and vancomycin.

• 대한물리의학회지
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• 제13권1호
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• pp.1-9
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• 2018

PURPOSE: This study investigated the neurophysiological and behavioral adaptation during one or both hands movement in chronic stroke patients. METHODS: The study included sixteen hemiplegic stroke patients. Neurophysiological data (brain activation and muscle activation) were examined by electroencephalography (EEG) and electromyography (EMG), and behavioral adaptation was examined by wrist extension angle during wrist extension with one hand or both hands. Outcome variables of one hand or both hands were; mu rhythm of the EEG, EMG amplitude of wrist extensor and flexor muscles, and wrist angle of Myomotion 3D motion analysis. RESULTS: Our results revealed that wrist extension angle was significant increased during both hands movement compared to one hand movement (p<.05). Furthermore, in affected sensorimotor area, there was significant increase in the brain activation during both hands movement compared to one hand movement (p<.05). However, there was no significant different between one hand and both hands movement in muscle activation (p>.05). CONCLUSION: According to the findings of this experiment, bilateral arm movement improved brain activity on affected sensorimotor area and wrist extension angle. Therefore, we suggest that bilateral arm movement would positive effect on stroke rehabilitation in terms of increase in brain activation on affected motor area and wrist extension during bilateral arm movement.

• 기본간호학회지
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• 제17권4호
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• pp.531-538
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• 2010

Purpose: This study was done to identify the effects of Qi hand reflexology on autonomic nerve activity in patients admitted to hospital. Method: A non-equivalent control group and quasi-experimental research with pre/post test design were used and 59 patients on a medical ward were assigned to either the experimental group (32) or the control group (27). The study variables included vital signs, autonomic nerve activities (ALF (absolute low frequency), AHF (absolute high frequency), nLF (normalized low frequency), nHF (normalized high frequency), SDNN (standard deviation of all normal-normal intervals)) and were evaluated using the QECG-3 system. The experimental group was treated with Qi hand reflexology for 10 minutes per day, for 3days. Results: Skin temperature and systolic blood pressure in the experimental decreased with treatment. ALF, AHF and SDNN for the experimental group increased with regulating proportion (nLF: nHF=6:4) and a significant difference between the groups was observed. Conclusion: The results indicated that application of Qi hand reflexology for patients in the hospital is effective in regulating the autonomic nervous system activation. Implication of finding should be useful for future research.

• 대한인간공학회지
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• 제29권5호
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• pp.727-734
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• 2010

The objective of this study was to evaluate the resting postures of the fingers and wrist based on the biomechanical model in term of hand posture (neutral, pronation, and supination) and gender (male and female). The finger and wrist joint angles were measured with VICON motion system. The EMG system was used to examine the muscle activity in the resting condition. The participants consisted of twenty male and twenty female students. The angles of the fingers and wrist were analyzed by means of the coordinate system associated with the International Society of Biomechanics. Hand posture was significant for all the joints. The finger and wrist joint flexed in supination more than in neutral and pronation. The hand posture and gender were not significant for the results of muscle activity, but it had larger muscle activities in supination more than in neutral and pronation.

• 한국약용작물학회지
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• 제24권3호
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• pp.183-190
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• 2016

Background: This study determined the effects of mulching, an environment friendly organic cultivation method, on antioxidant compound contents and growth in Codonopsis lanceolata, commonly known as Deodeok. Methods and Results: C. lanceolata was treated by mulching with several different methods (a non-woven fabric, biodegradable film, or rice husks) and also treated with hand weeding. A non-treatment plot was used as a control. The growth and levels of weed control in C. lanceolata were better in plants cultivated under mulching treatments (non-woven fabric, biodegradable film, and rice husks) than in those under non-mulching treatments (hand weeding and non-treatment). The contents of antioxidant compounds, such as total flavonoids, phenolics, and anthocyanins, were highest under the biodegradable film treatment, followed by the non-woven fabric treatment, rice husks treatment hand weeding, and non-treatment. There were identifiable differences in DPPH and ABTS activity in comparison to antioxidant compound content by solvent fractions. Mulching treatments resulted in higher DPPH scavenging activity in water and ethyl ether fractions and ABTS scavenging activity in n-butanol fractions than in other fractions, as opposed to hand weeding and non-treatment groups, although total activity of DPPH and ABTS did not increase with mulching treatments. Conclusions: Mulching C. lanceolata with biodegradable film and non-woven fabric is an effective method for improving plant growth and inhibiting the occurrence of weeds as well as for increasing antioxidant compound content and altering antioxidant activity.

• 전기전자학회논문지
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• 제24권4호
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• pp.1039-1049
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• 2020

신경의수를 제어하기 위해서는 사용자의 의도를 인식하는 신경신호 디코딩이 중요하다. 본 논문에서는 다채널 말초 신경신호의 실시간 디코딩 방법을 제안한다. 말초 신경신호는 정중신경과 요골신경에서 측정되었으며 운동잡음은 국소 근사 다항식에 의해 제거되었다. 다음으로 활동전위는 k-평균 알고리즘으로 분류되었다. 특징벡터는 활동전위의 발화율로부터 추출되었으며 자기 조직화 특징지도를 통해 차원이 축소되었다. 마지막으로 다층 퍼셉트론으로 손동작을 분류하였다. 원숭이 실험에서 모든 신호처리가 실시간 제한조건 이내에 완료되었으며 높은 성공률로 손동작을 인식할 수 있었다.

• 한국인터넷방송통신학회논문지
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• 제17권2호
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• pp.179-190
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• 2017

Hand Accelerometer는 인간신체 운동 패턴을 실시간으로 파악하는데 널리 사용되고 있다. 그러므로 행동 유형을 정확하게 파악하는 것은 아주 중요하다. 이 과정에서 각 행동유형의 형태를 미리 정확하게 파악하는 것이 중요하다. 인간의 신체 행동은 센서를 통해 수집된 시계열 데이터로 표현된다. 이 데이터는 비안정적, 비선형적 성격을 가지고 있다. 그래서 이런 성격의 데이터의 유형을 효율적으로 추출하는 방법을 찾는 것은 매우 중요하다. 힐버트-황 변환은 비안정적 비선형적 요소를 시계열데이터에서 효율적으로 추출하는 방법이다. 이 방법을 위의 시계열 데이터에 적용한 결과 핵심패턴이 성공적으로 추출되었다.

• 한국전문물리치료학회지
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• 제18권4호
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• pp.51-59
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• 2011

The purpose of this study was to investigate the effect of attentional focus and distance of external focus on the performance of balance task of upper extremity. Subjects (N=30) held a stick (2 m) and maintained it horizontally. All of the subjects performed balance task of upper extremity under four different attentional focus conditions: focus on hand (internal focus), marker at 10 cm inside of hand (external focus 1), marker at 10 cm outside of hand (external focus 2), marker at 20 cm outside of hand (external focus 3). The mean velocity of the bar (mm/s) and the muscle activity of biceps brachii (%RVC) were measured. They were decreased when the subjects focused on external focuses compared to internal focus and decreased as distance of attentional focus from body increased (p<.05). There were significant differences between groups (p<.05); internal focus-external focus 1, internal focus-external focus 2, internal focus-external focus 3, external focus 2-external focus 3. These results showed that external focus is more effective than internal focus in enhancing motor performance and focusing on more distant attentional focus results in enhanced motor performance promoting the utilization of more automatic control mechanisms.