DocumentCode :
1853210
Title :
Measurement of Muscle Fiber Stiffness during Stretch with Two Continuous Different Velocities in Skeletal Muscle Fibers
Author :
Kobayashi, T. ; Iwai, M. ; Kien Nguyen Phan
Author_Institution :
Shibaura Inst. of Technol., Tokyo
fYear :
2007
fDate :
22-26 Aug. 2007
Firstpage :
5810
Lastpage :
5813
Abstract :
Ca2+ activated single glycerinated muscle fibers were stretched by 3% of its slack length L0 with moderate velocities ranging from 0.015 to 0.15L0, and muscle fiber stiffness during and after stretch was measured by applying sinusoidal vibrations (peak-to-peak amplitude, 0.1% of L0, 2 kHz). During a single stretch, the fiber was first stretched by 1.5% with a velocity, and then it was further stretched by 1.5% with another velocity. It is suggested that, during stretch, a considerable fraction of cross-bridges slow down their cycling rate and increase their force-generating ability.
Keywords :
biomechanics; cellular biophysics; elastic constants; mechanical variables measurement; muscle; cross bridge cycling rate; cross bridge force generating ability; frequency 2 kHz; glycerinated muscle fiber Ca2+ activation; muscle fiber cross bridge; muscle fiber slack length; muscle fiber stiffness measurement; muscle stretch; sinusoidal vibrations; skeletal muscle fiber velocity; Electronic circuits; Length measurement; Muscles; Optical diffraction; Rabbits; Servomechanisms; Servomotors; Transducers; Velocity measurement; Vibration measurement; Animals; Cells, Cultured; Elasticity; Movement; Muscle Contraction; Muscle Fibers, Skeletal; Physical Stimulation; Psoas Muscles; Rabbits; Stress, Mechanical;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society, 2007. EMBS 2007. 29th Annual International Conference of the IEEE
Conference_Location :
Lyon
ISSN :
1557-170X
Print_ISBN :
978-1-4244-0787-3
Type :
conf
DOI :
10.1109/IEMBS.2007.4353668
Filename :
4353668
Link To Document :
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