• 대한물리의학회지
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• 제11권3호
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• pp.59-63
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• 2016

PURPOSE: The purpose of the present study is to examine the effects of sole Pilates based breathing on the thicknesses of the abdominal muscles. METHODS: Twenty adults aged in their 20-30s were randomly selected. The selection criteria were those who had no medical history of pain due to musculoskeletal system, neurologic, or orthopedic diseases within six months before the selection. The thicknesses of the abdominal muscles (the transversus abdominis muscle, internal oblique abdominal muscle, and external oblique abdominal muscle) of the subjects were measured using ultrasonography before and after Pilates breathing. The study was approved by the research ethics committee of the Catholic University of Pusan. RESULTS: After Pilates based breathing, the thicknesses of the transversus abdominis muscle, the internal oblique abdominal muscle, and the external oblique abdominal muscle increased significantly. In particular, the thickness increase rate of the transversus abdominis muscle was shown to be the highest. CONCLUSION: Sole Pilates based breathing is expected to be effective for the improvement of trunk stability through strengthening of abdominal muscles, because it induces the coordinated contraction of the transversus abdominis muscle and other abdominal muscle. It will be need the Longitudinal study for identify to long term effects of Pilates based breathing.

• 한국정밀공학회지
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• 제21권8호
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• pp.171-179
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• 2004

The purpose of this study is to generate cycling motion for FES (functional electrical stimulation) using knee muscles only. We investigated the possibility by simulation. The musculoskeletal model used in this simulation was simplified as 5-rigid links and 2 muscles (knee extensor and flexor). For the improvement of the present feedforward control in FES, we included feedback path in the control system. The control system was developed based on the biological neuronal system and was represented by three sub-systems. The first is a higher neuronal system that generates the motion command for each joint. The second is the lower neuronal system that divides the motion command to each muscle. And the third is a sensory feedback system corresponding to the somatic sensory system. Control system parameters were adjusted by a genetic algorithm (GA) based on the natural selection theory. GA searched the better parameters in terms of the cost function where the energy consumption, muscle force smoothness, and the cycling speed of each parameter set (individual) are evaluated. As a result, cycling was implemented using knee muscles only. The proposed control system based on the nervous system model worked well even with disturbances.

• 대한간호학회지
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• 제41권4호
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• pp.520-527
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• 2011

Purpose: The purpose of this study was to examine effects of nitric oxide synthase (NOS) inhibitor on muscle weight and myofibrillar protein content of affected and unaffected hindlimb muscles in rats with neuropathic pain induced by unilateral peripheral nerve injury. Methods: Neuropathic pain was induced by ligation and cutting of the left L5 spinal nerve. Adult male Sprague-Dawley rats were randomly assigned to one of two groups: The NOSI group (n=19) had NOS inhibitor (L-NAME) injections daily for 14 days, and the Vehicle group (n=20) had vehicle injections daily for 14 days. Withdrawal threshold, body weight, food intake and activity were measured every day. At 15 days all rats were anesthetized and soleus, plantaris and gastrocnemius muscles were dissected from hindlimbs. Muscle weight and myofibrillar protein content of the dissected muscles were determined. Results: The NOSI group showed significant increases as compared to the Vehicle group for body weight at 15 days, muscle weight and myofibrillar protein content of the unaffected soleus and gastrocnemius. The NOSI group demonstrated a higher pain threshold than the vehicle group. Conclusion: NOSI for 14 days attenuates unaffected soleus and gastrocnemius muscle atrophy in neuropathic pain model.

• Biomolecules & Therapeutics
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• 제18권4호
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• pp.442-447
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• 2010

This study was conducted to determine whether treatment with the anti-inflammatory eupatilin influences intestinal smooth muscle contraction stimulated by carbachol and, if so, to investigate the related mechanism. Denuded ileal or colonic muscles from Sprague-Dawley rats were used for the study and measurements of isometric contractions were obtained using a computerized data acquisition system; this data was also combined with results from molecular experiments. Eupatilin from Artemisia asiatica Nakai significantly decreased carbachol-induced contractions in both ileal and colonic muscles. Interestingly, eupatilin decreased carbachol-induced phosphorylation of ERK1/2 more significantly than that of MYPT1 at Thr855 in ileal and colonic muscles. However, eupatilin significantly decreased phosphorylation of MYPT1 at Thr855, but only in ileal muscle. Therefore, thin filament regulation, including MEK inactivation and related phospho-ERK1/2 decrease, is mainly involved in the eupatilin-induced decrease of intestinal contraction induced by carbachol. In conclusion, this study provides the evidence and a possible related mechanism concerning the inhibitory effect of the flavonoid as an antispasmodic on the agonist-induced contractions in rat ileum and colonic muscles.

• The Journal of Korean Physical Therapy
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• 제25권5호
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• pp.316-321
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• 2013

Purpose: The aimed of this study was to investigate muscle activation related to postural stability according to different frequency of whole body vibration during quiet standing, to identify the most effective training conditions that cause the highest neuromuscular responses, and to evaluate the difference of EMG activation according to the anatomical position of the muscle - proximal or distal from the vibration platform. Methods: Eighteen healthy subjects voluntarily participated in this single-group, repeated-measures study in which EMG data from upper trapezius, rectus abdominalis, external oblique abdominalis, elector spinae, gluteus maximus, rectus femoris, semitendinosus, and gastrocnemius were collected over different frequencies (0-5-10-15-20-25Hz) for each subject during quiet standing. Results: We observed a statistically significant difference in the mean values of %RVC of muscular activation according to different frequencies of whole body vibration during quiet standing in all muscles (p<0.05). Conclusion: Our results indicate that lower frequencies of vibration result in low muscular activation, and higher frequencies elicit high muscular activation. However, the most effective training condition that caused the highest activation was 20 Hz. In addition, the proximally located lower extremity muscles (GCM, RF, ST, GM) showed higher activation than the distally located trunk and neck muscles (ES, EO, RA, UT) together with increasing frequency.

• 대한물리의학회지
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• 제6권4호
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• pp.497-504
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• 2011

Purpose : Chronic cervical pain is a common source of disability in society. There has been no research regarding the amount of pressure for the deep cervical flexors during cranio-cervical flexion exercise (CCFE). The purpose of this study is to determine optimal pressure levels to facilitate deep cervical muscles (longus colli & longus capitis) during cranio-cervical flexion exercise, using ultrasound measurement of the muscles. Methods : Using a cross-sectional design, the study was performed in an experimental group of 19 subjects (7 men, 12 women) with no cervical pain. Participants were instructed to perform the CCFE, and during the five incremental stages of the test, changes in thickness, as compared to resting baseline values, were measured using ultrasonography for sternocleidomastoid muscle (SCM) and deep cervical muscles (DCF). Results : Both DCF and SCM muscles demonstrated an increase in recruitment with each progressive phase of the test. In comparing the different pressure increments, the most significant changes found in DCF thickness were between phase 2 and phase 3 (p<.05). However no differences were found between pressure increments for SCM thickness (p>.05). Conclusion : The results suggest 26 mm Hg as the optimal pressure level during cranio-cervical flexion exercise for facilitation of deep cervical flexor.

• 대한물리의학회지
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• 제12권1호
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• pp.61-66
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• 2017

PURPOSE: The purpose of this study was to investigate the effects of isometric upper limb contraction on the trunk and lower extremity muscles during the sit-to-stand activity in elderly females. METHODS: Eighteen healthy elderly females performed three directional isometric upper extremity contractions (flexion, extension, and horizontal abduction movements) using an elastic band during sit-to-stand activity. Electromyography signals were collected from the internal oblique, erector spinae, rectus femoris, and biceps femoris muscles. RESULTS: Internal oblique activity was greater in bilateral shoulder flexion and bilateral shoulder horizontal abduction than in neutral position (p<.05). Erector spinae and rectus femoris muscle activities in bilateral shoulder flexion was greater than in neutral position and bilateral shoulder extension (p<.05). Biceps femoris activity was significantly greater in bilateral shoulder flexion than in bilateral shoulder extension and horizontal abduction, and in neutral position compared to bilateral shoulder extension (p<.05). CONCLUSION: These results suggest that incorporating isometric upper limb contraction may be beneficial for enhancing the contribution of trunk and lower extremity muscle activities to trunk stabilization during sit-to-stand activity. Therefore, isometric upper limb contraction during sit-to-stand tasks, especially in flexion, may be used to elicit contraction of the lumbopelvic region muscles within a tolerable range, for developing endurance and strength in the elderly.

• 대한물리치료과학회지
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• 제25권2호
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• pp.24-34
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• 2018

Purpose: The purpose of this study was to assess how much neurac technic affects the stability muscles of the shoulder according to the supporting surface in crawling position. Method: 29 healthy adult males participated in this experiment. The experiment consists of 2 experimental groups and 1 control group. It is conducted for 3 weeks. Each group exercised for 7 seconds and then rested for 3 seconds. Using EMG, the average value of serratus anterior, upper trapezius, and lower trapezius was repeated three times. Experimental group 1 conducted push up plus exercise applied neurac technic with sling on unstable supporting surface. Experimental group 2 conducted push up plus exercise applied neurac technic with sling on stable supporting surface. Control group conducted the push up plus exercise on stable supporting surface. One-way ANOVA was used for statistical analysis. Result: It was noticeable that the result of Experimental group 1 affects stability muscles of more than Experimental group 2 and Control group. Conclusion: Push up plus position applied neurac technic with sling on unstable supporting surface was the most effective in activating the stability muscles of the shoulder.

• Journal of Oral Medicine and Pain
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• 제37권4호
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• pp.227-231
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• 2012

국한성 화골성 근염은 근육내에 섬유조직과 이소성 골이 형성되는 질환으로 외상성 화골성 근염으로도 알려져 있으며 외상, 외과적 술식, 지속적인 자극에 의하여 근육이 골화되는 질환이다. 주로 팔, 다리 근육에서 발생되며, 저작근에서 발생되는 예는 드물다. 저작근에 발생된 경우 주된 임상증상은 개구제한이며 환자는 이환부위의 동통이나 불편함을 호소하기도 한다. 본 연구는 30대 남성이 개구제한을 주소로 내원하여 임상검사와 방사선검사 후 저작근중에서 좌측 측두근과 외측 익돌근에서 발생된 국한성 화골성 근염으로 진단 내려진 증례를 보고하고자 한다.

• 한국실천공학교육학회논문지
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• 제3권1호
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• pp.200-205
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• 2011

본 연구의 목적은 첫째 뒤후려차기시 이용되는 주요 근육들의 근전도 반응을 분석하고, 둘째 지지하는 다리와 차는 다리의 근육들 사이의 관계를 분석하고, 셋째 숙련자와 비숙련자간 EMG 값의 차이를 분석하는 것이다. 측정된 근육들은 다음과 같다: 슬관절과 대퇴골, 내측광근과 외측광근을 굴곡과 신전을 조절하고, 대퇴골의 신전, 슬관절의 굴곡, 그리고 정강이의 외전을 조절하는 대퇴직근. 선택된 모든 근육의 근전도 반응이 분석되었다. 3개의 발차기가 수행되었고, 각 발차기의 근전도가 분석되었다. 그때 최상의 발차기의 근전도 반응이 근전도 분석에 이용되었다.