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Twitch Stimulation에 의한 Myosin Heads 움직임의 시간분석 연구
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  • Twitch Stimulation에 의한 Myosin Heads 움직임의 시간분석 연구
  • A Study on The Time For Movement of Myosin Heads by the Twitch Stimulation
저자명
김덕술,정정수,박근호,Kim. Duck-Sool,Jung. Jung-Su,Park. Keun-Ho
간행물명
한국유화학회지
권/호정보
2004년|21권 2호|pp.182-189 (8 pages)
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한국유화학회
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정기간행물|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

On contraction of the muscles, marked changes in X-ray reflections are observed, suggesting that conformational changes of contractile molecules and the movement of myosin heads during muscle contraction. Time slice requires tension peak after the onset of stimulation and the height of tension peak depends on the number of twitch cycle. The muscles were stimulated by five successive stimuli at an interval of 80 ms started while the tension was still being exerted by the muscles. The intensity of $I_{11}$, $I_{10}$, $143{AA}$ and $215{AA}$ reflection measured with 5ms time resolution and is recorded in isometric tension. The peak height of $I_{11}$ and $143{AA}$ intensity is changed after the onset of a stimulation $I_i$, and the length of twitch is shortened by successive twitches in the case of stimulation $T_i$. On the other hand, the peak height of In and $215{AA}$ intensity starts to decrease at the 1st twitch and remains constant at low peak height without appreciable recovery during the contraction term. In the case of successive twitch stimulation, the myosin heads of muscle are once moved from their resting position and never returned to their initial position.