• Title/Summary/Keyword: 근육수축

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명사 칼럼-우리 몸의 조기경보시스템 '통증'

  • Hwang, Gyeong-Ho
    • 건강소식
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    • v.32 no.6
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    • pp.4-5
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    • 2008
  • 우리 몸에 상처를 입었거나 상처를 입을 만한 상황에서 느끼는 유쾌하지 않은 감정까지 모두 통증의 범주에 포함된다. 잠재적인 손상을 알리는 통증 즉, 바늘에 찔리거나 불에 데이는 순간에 느끼는 것과 같은 일차적인 통증은 재빠른 회피반사를 일으켜 다가오는 더 큰 조직 손상을 미연에 방지하려는 조기경보시스템이라고 할 수 있다. 반면에 어쩔 수 없이 우리 몸이 손상을 입게 되면 통증은 반사적으로 근육 수축을 일으켜 신체를 움직이지 않게 한다. 골절상을 입었을 때의 통증처럼 움직이면 통증을 더 느끼게 되고, 움직이지 않아야 아프지 않고 뼈가 아물게 되는것이다. 이처럼 통증은 신체의 이상을 신속히 알리고 경고하는 중요한 방어기전 중의 하나이다.

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오징어갑으로부터 칼슘제 제조를 위한 회화처리조건의 검토

  • 김진수;조문래;허민수;오광수;안화진
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2001.05a
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    • pp.126-127
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    • 2001
  • 칼슘은 인체의 필수 원소로서 뼈나 치아의 조직에 강도를 부여하는 신체 지지기능 이외에 체액의 pH를 약 알칼리성으로 유지시켜 장관으로부터 흡수한 영양소를 각 세포에 부드럽게 전달하여 세포 및 효소의 활성화에 의한 근육의 수축, 혈액 응고 및 여러 가지 심혈관계 질환의 예방에 관여하는 기능을 한다. 따라서, 칼슘의 흡수가 부족한 경우에는 뼈나 치아의 발육이 나쁘게 되어 성장이 늦고, 피로를 쉽게 느끼며, 고혈압, 심장병 및 뇌졸증 등의 성인병 및 골다공증의 원인이 된다. (중략)

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오징어갑으로부터 유용 무기성분의 추출방법 검토

  • 허만수;조문래;안화진;오광수;김진수
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2001.05a
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    • pp.128-129
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    • 2001
  • 근년 경제성장과 더불어 늘어나는 맞벌이 부부, 교통 체증 등과 같은 사회적, 경제적 요인으로 즉석 식품의 수요가 급증하고 있고, 이로 인하여 칼슘 등과 같은 유용무기성분 및 비타민 등과 같은 미량 성분이 결핍되기 쉽다. 칼슘은 뼈나 치아의 조직에 강도를 부여하는 신체 지지기능 이외에 체액의 pH를 약 알칼리성으로 유지시켜 장관으로부터 흡수한 영양소를 각 세포에 부드럽게 전달하여 세포 및 효소의 활성화에 의한 근육의 수축, 혈액 응고 및 여러 가지 심혈관계 질환의 예방에 관여하는 기능을 한다. (중략)

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Investigation of Growth Stage Related Genes in Dark-banded Rockfish Sebastes inermis (볼락(Sebastes inermis)의 성장단계별 차등발현 유전자 탐색)

  • Jang, Yo-Soon
    • Korean Journal of Ichthyology
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    • v.23 no.1
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    • pp.21-29
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    • 2011
  • Expression analysis of development-related genes was conducted using differential screening of 6-month-old [18M(-), 6M-18M] specific and 18-month-old [6M(-), 18M-6M] specific subtracted cDNA libraries constructed by subtractive hybridization using skeletal muscle of 6- and 18-month-old dark-banded rockfish Sebastes inermis. A total 202 cDNA clones displaying different expression levels in each stage were obtained; among them, 32 clones showing up-regulation were finally selected for further expression analysis. We sequenced the clones and analyzed individual sequences. Genes expressed specifically in 6-month-old skeletal muscle were identified as myosin, adenylate kinase, calsequestrin, dystrobrevin beta, and diphosphate kinase-Z1. Genes showing strong expression in 18-month-old rockfish were identified as desmin, TGFBR2 (transforming growth factor-beta receptor), muscle-type creatine kinase, and cathepsin D. Expression of these genes was checked further in 6-18-30-42 month-old dark-banded rock fish. Rapid reduction of expression was observed in dystrobrevin beta and diphosphate kinase. However, expression of creatine kinase (muscle type) and cathepsin D increased as dark-banded rockfish grew, and remained even after 18 months. The results reported here demonstrate that genes related to muscles contract are expressed at an early stage of development, and genes controlling energy in muscles are predominantly expressed at a late developmental stage.

Electromyographic Analysis of the Biceps Brachii during Provocative Tests (상완 이두 건 병변에 대한 유발 검사시의 근전도 분석)

  • Lee Young-Soo;Shin Dong-Rae;Cho Sang-Hyun;Nam Ki-Sun;Kim Sung-Jae
    • Clinics in Shoulder and Elbow
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    • v.2 no.2
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    • pp.170-177
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    • 1999
  • The electromyographic activity of four muscles(biceps, supraspinatus, infraspinatus and subscapularis) was mea­sured from non-dominant shoulders of 12 volunteers by six different provocative test for the biceps pathology. The provocative tests were Speed, Yergason, Ludington, Heuter, O'Brien and the abduction-extension test. Each test was performed in a force of 30% of maximal voluntary contraction. The levels of activity of the biceps were higher than those of the other rotator cuff muscles only in Speed's test: 28% in the biceps, 26% in the infraspinatus, 25% in the supraspinatus and 21 % in the subscapularis. The levels of activity of the biceps as a percent of MMT(maximal manual test) were higher in Speed's(42%) and O'Brien's test with the arm supinatecl(42%). Speed's test can isolate the activity of biceps better than the other tests but it is a nonspecific test by which the biceps tendon was also activated within other rotator cuff muscles.

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Histological Changes of the Acupoint by Acupuncture Stimulation (침자(鍼刺)한 경혈(經穴) 부위(部位)의 조직학적 변화(組織學的 變化))

  • Kim, Jeong-Sang;Park, Min-Hee;Cho, Kwang-Phil;Jung, Hae-Man
    • Applied Microscopy
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    • v.30 no.1
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    • pp.81-87
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    • 2000
  • This study has been carried out to understand histochemical and ultrastructural changes by acupuncture stimulation at the acupoint of the Zusanli (St. 36) in the rat. A lot of mast cells are observed in the peripheral of the hole with a sparrow-pecking and twistin -needle manipulation to the acupoint Zusanli for induction of 'Qi'. These cells contained a lot of granules with varied electron density and exocytosis granules were observed near the mast cell. H-bands of the muscle fiber that situated near the hole were shortened. It is assumed that these muscles are contracted by acupuncture stimulation. These results imply that functional relationship between mast cells in the dermis and Qi-sensation induced by acupuncture plays an important role on the specific receptor response to the mechanical stimulation.

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Development of Mathematical Model to Predict Dynamic Muscle Force Based on EMG Signal (근전도로부터 동적 근력 산정을 위한 수학적 모델 개발)

  • 한정수;정구연;이태희;안재용
    • Journal of Biomedical Engineering Research
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    • v.20 no.3
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    • pp.315-321
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    • 1999
  • The purpose of this study is to develop a mathematical model for system identification in order to predIct muscle force based on eledromyographic signal. Therefore, a finding of the relalionship between characteristics of electromyographic signal and the corre spondng muscle force should be necessiiry through dynamic, joint model. To develop the dynamic joint model, the upper limb mcludmg the wrist and elbow joint has been considered. The kinematic and dynamic data, such as joint angular displacement, velocity, deceleration along with the moment of inertla, required to establish the dynamic model has been obtained by electrical flexible goniometer which has two degree-of-frcedoms. ln this model, muscle force can be predicted only electromyographs through the relationship between the integrated lorce and the mtegrated electromyographic signal over the duration of muscle contraclion in this study.

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Effect of Shoulder stabilization exercise and McKenzie Exercise on Forward Head Posture (거북목을 가진 사람에게 메켄지 폄운동과 어깨안정화운동이 앞쪽머리자세에 미치는 영향)

  • Lee, Jun-cheol
    • The Journal of the Convergence on Culture Technology
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    • v.5 no.4
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    • pp.227-235
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    • 2019
  • The purpose of this study was to investigate the effects of cervical vertebral height and shoulder stabilization on anterior head posture in people with turtle neck. The subjects of this study consisted of normal and healthy people with 30 turtle necks. Subjects were randomly assigned to shoulder stabilization exercise and cervical vertebrae exercise (30 men, 15 men and 15 women, height: $168.67{\pm}6.51$, $22.33{\pm}8.27$, $65.03{\pm}11.98$, and $28.66{\pm}1.91$), In the experimental group, shoulder stabilization exercise and cervical spine exercise were performed for 4 weeks. Deep neck flexor, leavator scapular, upper trapezius, rhomboid, and lower trapezius showed significant differences in shoulder stabilization and cervical vertebrae before and after the experiment. As a result, the CVA value decreased significantly and the muscle activity value increased significantly when exercise and Mckenzie program were applied. These results show that exercise and Mckenzie programs have a positive effect on turtle neck improvement.

Expression Patterns of the Differentially Expressed Genes During Growth Stages of Hanwoo(Korean Cattle) (한우 성장단계 특이발현 유전자의 발현양상 분석)

  • Jang, Y.S.;Yoon, D.H.;Kim, T.H.;Cheong, I.C.;Jo, J.K.
    • Journal of Animal Science and Technology
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    • v.44 no.6
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    • pp.677-684
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    • 2002
  • We have investigated the expression patterns of candidates for growth stage specifically expressed genes. The expression patterns of the EPV20, aldolase A, Translationally Controlled Tumor Protein (TCTP) and Adipocyte Differentiation Related Protein (ADRP) were examined by semiquantitative RT-PCR and northern blot analysis in skeletal muscle tissues of Hanwoo, especially in the longissimus dorsi at various growth stages. The EPV20 mRNA was expressed in longissimus dorsi tissue of Hanwoo, but there was no difference of expression levels during growth stages. Though the aldolase A gene was reported to be muscle-specific and regulated at developmental stages, the expression levels of aldolase A mRNA in the longissimus dorsi tissues showed little differences at various growth stages. The expression levels of TCTP which was reported as growth-related protein regulated at translation step were gradually increased during growth of Hanwoo. The expression levels of ADRP mRNA were rapidly increased at 24-month-old longissimus dorsi tissue of Hanwoo, and decreased at 30-month-old. Our data suggest that the ADRP gene show as growth-stage dependent expression and is related to fat deposition within muscular tissue.