• 대한정형도수물리치료학회지
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• 제16권2호
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• pp.93-97
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• 2010

Purpose: The first purpose of this study was to determine the effect of reciprocal inhibition that influence changes in pain when applied to patients with culf cramps. The second purpose of this study was to determine the effect of manual therapy on iliaosacral joint that influence changes number of occurrences when applied to patients with frequent nocturnal culf cramps. Methods: The first study using reciprocal inhibition techniques to 20 patients with calf cramps and saw the change in pain. The second study using manual therapy on iliaosacral joint to 2 patients with frequent nocturnal culf cramps and saw the change in number of occurrences during the week. Results: The pain and number of occurrences were significantly difference between pre-treatment and post treatment. Conclusion: Based on the results of this study, we found that reciprocal inhibition decreased pain and that manual therapy on iliaosacral joint decreased number of occurrences.

• Journal of Korean Neurosurgical Society
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• 제64권6호
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• pp.843-852
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• 2021

The purpose of this review was to synthesize the research on global spinal alignment and reciprocal changes following cervical or thoracolumbar reconstruction surgery. We carried out a search of PubMed, EMBASE, and Cochrane Library for studies through May 2020, and ultimately included 11 articles. The optimal goal of a truly balanced spine is to maintain the head over the femoral heads. When spinal imbalance occurs, the human body reacts through various compensatory mechanisms to maintain the head over the pelvis and to retain a horizontal gaze. Historically, deformity correction has focused on correcting scoliosis and preventing scoliotic curve progression. Following substantial correction of a spinal deformity, reciprocal changes take place in the flexible segments proximal and distal to the area of correction. Restoration of lumbar lordosis following surgery to correct a thoracolumbar deformity induces reciprocal changes in T1 slope, cervical lordosis, pelvic shift, and lower extremity parameters. Patients with cervical kyphosis exhibit different patterns of reciprocal changes depending on whether they have head-balanced or trunk-balanced kyphosis. These reciprocal changes should be considered to in order to prevent secondary spine disorders. We emphasize the importance of evaluating the global spinal alignment to assess postoperative changes.

• The Journal of Korean Physical Therapy
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• 제16권4호
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• pp.59-79
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• 2004

The purpose of this study was to determined the effects of reciprocal inhibition on spatial-temporal gait parameters in spastic hemiplegic patients through GaitRite system. The subjects were consisted 45 patients who had spastic hemiplegia due to stroke. All subjects randomly assigned to 3 group : manual reciprocal inhibition program group(manual group), neuromuscular electrical stimulation group(NMES group) and control group. The manual group received voluntary isometric contraction of pre-tibia muscle. The NMES group received neuromuscular electrical stimulation on tibialis anterior. The control group was not recieved any therapeutic intervention. Before and after experiments, spatial-temporal gait parameters and functional ambulatory profile was measure in all patients. The data of 30 patients who complete experimental course were statistically analysed. The results of this study were as following : 1. The percentage of change of functional ambulatory profile were markedly increased in manual group but statistically non significant(p>.01). 2. The percentage of change of gait velocity and cadence were markedly increased in manual group but statistically non significant(p>.01). 3. Asymmetry ratio of gait elements were more improved in manual group but statistically non significant(p>.01). 4. There were no statistical difference between pre-test and post-test with functional ambulatory profile, gait velocity, cadence and asymmetry ratios in NMES group(p>.01). 5. There were no statistical difference between pre-test and post-test with unctional ambulatory profile, gait velocity, cadence and asymmetry ratios in control group(p>.01). In conclusion, the present results revealed that reciprocal inhibition which produced by voluntary isometric contraction of pre-tibia muscle can be improved spatial-temporal gait parameters including functional ambulatory profile in hemiplegic patients. Therefore, reciprocal inhibition is useful to improve functional activities in hemiplegic patient. Further study should be done to analyze the effects of intervention duration of reciprocal inhibition, appropriate muscle contraction, optimal time to apply the reciprocal inhibition in more long period.

• 한국학교수학회논문집
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• 제22권3호
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• pp.221-240
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• 2019

연구의 목적은 수학 학습부진학생의 수업 결손을 보충하고 학생에게 성공 경험을 제공하기 위한 하나의 방안으로 상호 또래교수 전략을 제안하는 것이다. 이를 위하여 수학 학습부진학생을 수학 성취도가 중학교 단계까지 학교에서 중 수준 이상이고 고등학교에 진학하여 상대적으로 낮아진 학생으로 정의하고, 수학 학습부진학생 4명을 대상으로 상호 또래교수 활동 과정에서 나타나는 정의적 영역의 변화에 초점을 맞추어 상호 또래교수 활동의 장점 및 역할을 살펴보았다. 상호 또래교수 활동은 사전 검사와 사후 검사 및 사전 훈련을 포함하여 약 3개월에 걸쳐 진행되었다. 연구 결과, 상호 또래교수 활동은 전반적으로 수학 학습부진학생의 정의적 영역에 긍정적인 변화를 가져왔다. 연구에 참여한 4명의 학생이 모두 동일한 양상의 변화를 보이지 않고 학생별로 긍정적인 변화의 하위 요소가 다르게 나타났지만, 상호 또래교수 활동은 모든 학생에게 긍정적인 변화를 경험하는 기회를 제공하였다.

• 한국산학기술학회논문지
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• 제8권5호
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• pp.1026-1033
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• 2007

본 논문에서는 비가역소자를 구조 시뮬레이터를 이용하여 설계하고 제작하여 특성을 비교하고, PIMD 특성에 영향을 미치는 조건을 확보하여 조건의 변화에 따른 PIMD 특성의 변화 값을 확인하였다. 중심주파수가 2.6GHz에 대하여 설계하여 그에 따른 특성을 살펴본 결과 중심주파수 2,650MHz, 밴드 폭 100MHz를 가지며 아이솔레이션 20dB 이상, 반사손실은 20dB이상, 삽입손실이 0.2dB 이하 값을 나타내었다. 비가역소자의 IMD는 되도록 동질의 물질을 사용하고, 내부 구성품 간 유격이 없을 때 우수한 값을 보였으며, 압력이 놓아질수록 좋아지는 경향을 보였으나, 일정 압력 이상의 가할 경우 내부의 자석이나 페라이트의 파손 등을 가져와 주파수 특성의 저하와 함께 IMD 특성이 급격이 증가하였다.

• 디지털융복합연구
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• 제10권10호
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• pp.397-404
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• 2012

엉치엉덩관절의 고정(sacroiliac joint fixation; SIJF)은 넙다리뒤근육의 과긴장을 일으키고, 호흡시 나타나는 엉치뼈의 움직임을 제한한다. 본 연구는 카이로프랙틱 기법 중 엎드린 자세에서 시술되어지는 S.O.T category I 골반 블록 중재가 SIJF를 완화시킬 수 있는지 알아보기 위한 것이다. 발꿈치긴장 검사를 통해 SIJF를 가진 26명의 참가자를 선정하여 실험군과 대조군에 각기 13명씩 무작위 할당하였다. 실험군은 category I 블록 중재를 받았고, 대조군은 거짓블록 중재를 받았다. 중재 전과 후에 넙다리뒤근육의 긴장 정도(체전굴 검사 이용)와 호흡시 엉치뼈의 움직임을 측정하였다. 발꿈치긴장 검사 결과 실험 군에 속한 참가자는 모두 음성반응을 보인 반면, 통제군의 참가자들은 양성반응을 보여 블록중재가 SIJF를 완화시킨 것을 확인하였다. 공분산분석(ANCOVA)에서 블록중재에 의해 체전굴 측정치[F(1, 23)=7.73, p<.05]와 호흡시 엉치뼈의 움직임[F(1, 23)=7.07, p<.05] 모두가 유의하게 증가된 것으로 나타났다. 그러나 통제군에서는 중재 전과 후의 차이가 없었다. 이 결과는 비침습적 중재법인 S.O.T category I 블록 기법이 SIJF와 관련된 증상을 완화시킬 수 있는 유용한 방법임을 시사한다.

• 대한정형도수물리치료학회지
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• 제11권1호
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• pp.11-28
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• 2005

Spasticity has been defined as "a motor disorder characterized by a velocity-dependent increased in tonic stretch reflexes with exaggerated tendon jerks, resulting from hyperexcitability of the stretch reflex, as one components of the upper motorneuron syndrome". Spasticity is one of the common symptoms of stroke patients and frequently interferes with the motor functions such as gait, posture and activities of daily living. Therefore, its management is becoming a major issue in physical therapy. The purpose of this study was to determined the effects of reciprocal inhibition by isometric contraction of pre-tibia muscle on spasticity in hemiplegic patients through Hoffmann reflex. The subjects were consisted 45 patients who had hemiplegia due to stroke. All subjects randomly assigned to 3 group: manual reciprocal inhibition program group(manual group), neuromuscular electrical stimulation group(NMES group) and control group. The manual group received voluntary isometric contraction of pre-tibia muscle. The NMES group received neuromuscular electrical stimulation on tibialis anterior. The control group was not received any therapeutic intervention. Before and after experiments, Hoffmann reflex, M-wave and Modified Ashworth scale was measure in all patients. The data of 30 patients who complete experimental course were statistically analysed. Modified Ashworth scale were significantly decreased after experiment in manual group(p<.01). The Hmax/Mmax ratios were significantly decreased after experiment in manual group(p<.o1). There were no statistical difference between pre-test and post-test with modified Ashworth scale in NMES group(p>.01). There were no statistical difference between pre-test and post-test with Hmax/Mmax ratios in NMES group(p>.01). There were no statistical difference between pre-test and post-test with modified Ashworth scale in control group(p>.01). There were no statistical difference between pre-test and post-test with Hmax/Mmax ratios in control group(p>.01). The present results revealed that reciprocal inhibition which produced by voluntary isometric contraction of pre-tibia muscle can be reduce spasticity of gastrocnemius. Therefore, reciprocal inhibition is useful to improve functional activities in hemiplegic patient. Further study should be done to analyse the effects of intervention duration of reciprocal inhibition, appropriate muscle contraction, optimal time to apply the reciprocal inhibition in more long period.

• 한국심리학회지 : 문화 및 사회문제
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• 제16권4호
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• pp.447-468
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• 2010

본 연구의 목적은 자기회귀 교차지연 모델 (ARCL: autoregressive cross-lagged model)을 통해 검증된 청소년 비행과 일탈적 자아개념의 상호적 인과관계(이은주, 정익중, 2009)를 잠재 상태-특성 자기회귀 모델 (LST-AR: latent state-trait autoregressive model)의 적용을 통해 재검증하는데 있다. 일반적으로 상호적 인과관계의 검증을 위해 ARCL 모델이 적용되지만, 일탈적 자아개념이 갖고 있는 특성적 요인의 변량을 통제하지 않은 상태에서 비행과의 상호적 영향을 분석하게 되면 비행이 일탈적 자아개념에 미치는 영향에 대한 해석이 왜곡될 수 있다. 따라서 LST-AR 모델을 통해 일탈적 자아개념의 안정적 특성 및 변동적 상태를 구분하고, 특성적 요인을 통제한 후 상태적 일탈자아와 비행의 상호적 인과관계를 살펴보았다. 본 연구의 분석에는 한국청소년패널조사의 중2에서 고3까지 5년 종단자료가 활용되었다. 연구결과, 일탈적 자아개념과 비행의 상호적 인과관계가 재검증되었을 뿐만 아니라 일탈적 자아개념의 안정적 특성 및 변동적 상태 요인에 따라 비행과의 상호적 인과관계가 다를 수 있음도 확인되었다. 마지막으로 상호적 인과관계의 연구에서 안정적 특성과 변동적 상태 요인의 구분에 대한 방법론적 의미가 논의되었다.

• 한국소음진동공학회논문집
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• 제26권3호
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• pp.290-297
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• 2016

This paper deals with the vibration characteristics of a reciprocal compressor with variable rotating speed according to the change of operating frequencies. The equation of motion and exciting force of the equivalent compressor model were formulated, and the vibration responses at operating frequencies were predicted. The predicted results were compared with the measured results. Although the predicted results had little errors in operating condition, it represented good agreement in general. Especially, the natural frequencies obtained from the measurement were similar to those calculated by the eigenvalue problem of the equivalent model. The procedure and results in this paper can be utilized to the identification of the vibration characteristics of new compressor models.

• Tribology and Lubricants
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• 제18권2호
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• pp.167-172
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• 2002

The wear behaviors of ultrahigh molecular weight polyethylene pins against titanium alloy and stainless steel disks moving in two different kinematic motion were investigated by conducting repeat pass rotational sliding and linear reciprocal sliding wear tests. Linear reciprocal motion wore more the polyethylene pin than did repeat pass rotational motion for both disk materials. It means that the repeated directional change of contact stresses generates more wear debris in polyethylene. For the linear reciprocal sliding tests, titanium alloy disks were damaged with some scratches after one million cycles but no surface damage was observed on the polyethylene pins. On the other hand, fur the repeat pass rotational sliding tests, all titanium alloy disks were severely abraded on the entire region of sliding track. This phenomenon can be interpreted by that stress fatigue under repeated sliding contact initiated titanium oxide layer wear particles from disk surface, and these hard particles were embedded into polyethylene pin and then they severely abraded the disk surface. From these results it can be concluded that the kinematic motion in pin-on-disk wear tests play a crucial role on the wear behaviors of UHMWPE pins against titanium alloy and stainless steef discs.