• 한국전문물리치료학회지
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• 제13권1호
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• pp.54-60
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• 2006

This study aimed to compare movement patterns of shoulder joints between the right and left symmetry in stroke patients and control subjects. This study proposes use of the voluntary response index (VRI) calculated from quantitative analysis of surface electromyographic (sEMG) and motion data recorded during voluntary movement as a feeding task. The VRI is comprised of two numeric values, one derived from the total muscle activity recorded for the voluntary motor task (magnitude), and the other from the sEMG distribution across the recorded muscles with the similarity index (SI). Five stroke patients and five age-matched healthy controls were recruited. Feeding motion was performed using the provided spoon five times with rests taken on a chair in between tasks. EMG data were digitized and analyzed on the basis of the root mean square (RMS) envelope of activity. The average amplitude of responses was calculated. Responsiveness and clinically meaningful levels of discrimination between stroke patients and control for EMG magnitude and SI were determined. The similarity index of the results from two successive examinations of both sides apart for stroke patients and control subjects were .86 and .95 in motion analysis and .84 and .99 in electromyographic analysis. The SI of sEMG data and motion data was significantly correlated in stroke patients. The data suggest that SI is a sensitive program for comparing and analyzing the symmetry of muscle activity and motion in both sides. This analysis method has a clinical value in grading muscular activity and movement impairment after brain injury.

• The Journal of Korean Physical Therapy
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• 제33권2호
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• pp.106-113
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• 2021

Purpose: This study examined the effectiveness of action observation training (AOT) and mirror therapy in improving the electroencephalograms (EEG) of stroke patients. Methods: Patients were allocated randomly to three groups: an action observation training with activity (AOTA) group (n=12), a mirror therapy with activity (MTA) group (n=11), and an AOT-only group (n=12). All groups received conventional physiotherapy in five 60-minute sessions over six weeks. The AOTA, MTA, and AOT groups practiced AOTA, MTA, and AOT, respectively, in three 30-minute sessions over six weeks. The differences between the pre- and post-treatment EEGs were assessed using a paired t-test. Comparisons between the groups were performed using one-way ANOVA. Results: The participants in the AOTA and MTA groups showed significant improvement in the EEG. AOTA improved the alpha waves of the prefrontal, temporal, and parietal lobes significantly (p<0.05). MTA improved the alpha waves of the temporal lobe significantly (p<0.05). AOT did not result in significant improvement Conclusion: AOTA and MTA improve stroke patients' EEGs. Mirror neuron activation combined with conventional stroke physiotherapy promotes motor recovery and functioning. The effect is enhanced when the actions are executed after observation. Further research into mirror neuron activation will be needed to develop methods to improve the EEGs of stroke patients.

• The Journal of Korean Physical Therapy
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• 제26권4호
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• pp.262-268
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• 2014

Purpose: This study was conducted in order to measure fatigue as an objective index, depression and health-related quality of life of patients with COPD in daily life, to understand the correlation between them, and to present reasons for using the results clinically. Methods: This study is intended to evaluate and compare depression, the health-related quality of life of each group after measuring lactic acid levels of 39 male patients with COPD, and dividing those with measurement values than the normal value into the experimental group, and those with normal values into the control group. Results: When comparing depression between the experimental group and the control group, it was measured at 10.38 in the experimental group, and at 7.00 in the control group (p<0.05). Health-related quality of life between the experimental group and the control group was measured at 51.8 in the experimental group, and at 48.67 in the control group (p>0.05). Conclusion: According to the results described above, it appears that patients with COPD have adapted to their disease in some degree for a long period of time, and they are physically and psychologically adjusting to the fatigue they experience, in their own ways of adapting. These results imply that improving physical activity is associated with relief of fatigue and improvement of the quality of life. Thus, there is a need for developing and researching an exercise program and a physical therapy intervention for enhancement of physical activity.

• The Journal of Korean Physical Therapy
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• 제25권4호
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• pp.224-231
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• 2013

Purpose: The purpose of this case study was to investigate three poor fibrinolytic responders with chronic ischemic stroke to acute exercise intensity and time. Methods: Three ischemic stroke patients (male) from the stroke center located at Busan metropolitan area in Republic of Korea volunteered at this study. They performed two single session exercises that were a VO2peak test and a single bout treadmill walking (70-75%HRpeak, 30 min, 50min). Fasting blood samples for determination of tissue Plasminogen Activator (tPA) and Plasminogen Activator Inhibitor-1 (PAI-1) were obtained before, immediately after, 30min after acute exercise. SPSS 12.0 was used for analyzing of data and computing mean and standard deviation, and change rate was conducted between times. Results: In fibrinolytic activity according to the intensity and time of acute exercise, tPA change increased steadily during the recovery stage after the VO2peak in the cases, but PAI-1 activity showed different patterns among the cases. In a single bout treadmill walking (70-75%HRpeak, 30 min, 50min), tPA change increased between 30min and 50min. Conclusion: In conclusion, these results suggest that the exercise prescription for poor fibrinolytic responder with three male chronic ischemic stroke patients without motor disability recommend at 70-75%HRpeak, over 30min.

• 디지털융복합연구
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• 제12권7호
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• pp.411-418
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• 2014

본 연구는 20대 성인남성을 대상으로 세 운동군이 정적 및 동적 균형능력과 근활성도에 미치는 효과를 규명하기 위하여 수중 운동군, 체간 안정화 운동군, 균형 운동군으로 각각 15명씩 배치하였다. 2013년 6월부터 2013년 9월까지 연구가 진행되었으며, 6주 간 1주일에 3일, 1회 30분 동안 중재 후, 동일 대상자들의 균형능력 및 근활성도(앞정강근, 장딴지근)를 측정하여 비교하였다. 그 결과 집단 내 중재 전과 중재 후의 비교에서 세 운동군 모두 신체중심 이동면적과 총궤적길이의 변화는 유의한 차이가 있었고(p<.05)(p<.01), 동적 균형에서도 안정성 한계의 변화는 유의한 차이가 있었다(p<.05)(p<.01). 앞정간근의 근활성도의 변화에서 세 운동군의 좌 우측 모두 통계학적으로 유의한 차이가 있었고(p<.05)(p<.01), 장딴지근은 체간 안정화 운동군의 좌측을 제외한 모두 통계학적으로 유의한 차이가 있었다(p<.05)(p<.01). 수중 운동이 균형능력의 향상과 근활성도 증가에 효과적임을 규명하였고, 본 연구결과를 토대로 균형능력이 좋지 않은 노인이나 환자들에게 객관적인 수중 운동 효과를 밝힐 수 있는 연구가 진행되어 구체적인 수중 운동 프로그램 개발을 제안하고자 한다.

• The Journal of Korean Physical Therapy
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• 제20권4호
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• pp.35-42
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• 2008

Purpose: Alterations in the structure and function of vascular smooth muscle cells (VSMCs) are important in cardiovascular disease and maintaining chronic hypertension. Chronic hypertension is associated with changes in vascular smooth muscle tone. The spontaneous or myogenic tone of a blood vessel reflects the ability to adapt smooth muscle tone to changes in transmural pressure. However, the intracellular signaling mechanisms involved in myogenic tone are not fully understood. Methods: Here, we investigated the relationship between mitogen-activated protein kinases (MAPKs) and phosphatidylinositol-3 kinase (PI3K) in isometric contraction and enzymatic activity using muscle strips from rats made hypertensive with aldosterone-analogue deoxycorticosterone acetate (DOCA) salts. Results: Changes in myogenic tone and intracellular $Ca^{2+}$ concentration ($[Ca^{2+}]_i$) were different after physiological salt solution (PSS) in normotensive and hypertensive rats. The myogenic tone and quiescent phosphorylation induced by the PSS treatment were inhibited by 10 ${\mu}$M PD098059, an extracellular-regulated protein kinase 1/2 (ERK1/2) inhibitor, and 10 ${\mu}$M wortmannin, an inhibitor of PI3K, in hypertensive rats. Conclusion: The development of DOCA-induced hypertension is associated with altered isometric contractions and $[Ca^{2+}]_i$ via changes in activation of ERK1/2 and PI3K after DOCA-salt treatment. Therefore, ERK1/2 and PI3K activity affect hypertension and may be suitable targets for physical therapy in cardiovascular disease.

• Korean Chemical Engineering Research
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• 제54권1호
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• pp.140-144
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• 2016

본 연구에서는 극지 연구소로부터 분양 받은 Arthrobacter sp. PAMC 27388 균주에서 생산되는 아밀라아제(amylase)를 물리적 요인(physical factor)들의 변화를 통하여 생산배지 최적화를 수행하였다. 한천 배지 상에서 lugol solution을 이용한 클린환의 확인을 통하여 아밀라아제가 생산됨을 확인하였으며, 16S rDNA를 이용하여 동정한 결과 Arthrobacter sp. 임을 확인할 수 있었다. 최적화 이전의 아밀라아제 생산량은 1.66 mU/L로 확인되었다. 최적화 결과, 2.49 mL의 접종부피, pH 6.85, 42.87 mL의 배지 부피의 조건에서 가장 많은 양의 아밀라아제가 생산될 것으로 예상되었으며, 생산량은 2.84 mU/L로 예상되었다. 확인 실험을 통하여 최적화 이전과 비교하여 생산량이 약 150% 증가한 2.50 mU/L의 아밀라아제가 생산됨을 확인할 수 있었다.

• 한국콘텐츠학회논문지
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• 제18권10호
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• pp.584-595
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• 2018

본 연구의 목적은 초등학생의 체육수업 기본심리욕구 충족정도가 학교행복감과 신체적 라이프스타일에 미치는 영향을 살펴보는 것이다. 이를 위해 I 도시, 5개 초등학교 300명의 초등학생에게 설문지가 배부되었다. 불성실하게 응답한 설문지 22부를 제외한 총 278부의 설문지가 자료분석에 사용되었다. 자료분석을 위해 기술분석, 탐색적 요인분석, 상관관계분석, 다중회귀분석이 사용되었다. 상관관계분석 결과, 체육수업 기본심리욕구의 유능감과 관계성은 중 고강도 신체활동 및 학교행복감의 모든 하위변인들과 정적인 상관관계를 나타냈다. 다중회귀분석결과, 기본심리욕구의 유능감은 자기존중감과 교사관계 학교행복감에 정적인 영향을 미쳤으며, 중 고강도 신체활동에 정적인 영향을 미쳤다. 기본심리욕구의 관계성은 학교행복감의 모든 하위요인에 정적인 영향을 미쳤다. 본 연구의 결과에 따르면, 체육수업 기본심리욕구의 충족은 학교행복감의 중요한 요소이며, 신체적으로 적극적인 학생으로 이끄는 중요한 심리기전으로 밝혀졌다. 본 연구를 통해 초등학교 체육수업의 가치가 더욱 부각되기를 바란다.

• 대한간호학회지
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• 제35권3호
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• pp.621-630
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• 2005

Purpose: The purpose of this study was to -retrospectively describe the childhood sports activity level of Korean adult men and women and to determine whether a higher level of childhood sports activity was positively associated with adult bone mineral density. Methods: A cross-sectional study of 100 Korean men (n=40) and women (n=60) was completed. Participants completed a detailed lifetime sports activity questionnaire and had their bone mineral density of the femur and lumbar spine measured using dual energy x-ray densitometry (DEXA). All sports activities were classified into four categories of peak strain score on the basis of ground reaction forces (GRF). Results: During the age of high school, women and men who participated in a high intensity sports activity demonstrated higher bone density in the femur site after adjustment for the effects of body weight, fat body mass, lean body mass, the level of calcium intake, and breast feeding period than those who did not participate in sports activity at all. Conclusion: These results highlight the need to participate in high intensity sports activity during high school age as a means of increasing peak bone mass in the femur site.

• 한국운동역학회지
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• 제22권1호
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• pp.105-111
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• 2012

The purpose of this study was to investigate the effect that difference in forefoot of shoe flexibility during the quick lunge from a jump smashing on the lower limbs and the plantar pressure distribution. For this 10 elite badminton players with over 10 years experience and right handed participated. Two kinds of badminton shoes were selected and tested mechanical testing for the forefoot flexibility. Motion analysis, ground reaction forces and plantar pressure distribution were recorded. It was required to conduct lunge movement after jumping smashing as possible as high. Photo sensor was located in 3 meter away from standing position and its height was 40 cm. Subjects were conducted to return original position after touching the sensor as under clear movement as possible as fast. Forefoot stiffness had an effect on shoe peak bending degree and peak bending angular velocity in propulsion phase. Forefoot flexibility had an effect on ankle plantar flexion and knee flexion moment. It appears that joint power on lower limb and peak plantar pressure were not influenced by the flexibility of shoes.