Background: Effects of extramuscular connective tissues on muscle force (experimentally measured) and lengths of sarcomeres (modeled) were investigated in rat. It was hypothesized that changes of muscle-relative position affect the distribution of lengths of sarcomeres within muscle fibers. Method of approach: The position of extensor digitorum longus muscle (EDL) relative to intact extramuscular connective tissues of the anterior crural compartment was manipulated without changing its muscle-tendon complex length. Results: Significant effects of EDL muscle relative position on proximal and distal EDL forces were found, indicating changes of extramuscular myofascial force transmission. EDL isometric force exerted at its proximal and distal tendons differed significantly. Finite-element modeling showed that the distribution of lengths of sarcomeres is altered by changes of muscle-relative position. Conclusions: It is concluded that forces exerted on a muscle via extramuscular myofascial pathways augment distributions of lengths of sarcomeres within that muscle.
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October 2003
Technical Papers
The Relative Position of EDL Muscle Affects the Length of Sarcomeres Within Muscle Fibers: Experimental Results and Finite-Element Modeling
Huub Maas,
Huub Maas
Instituut voor Fundamentele en Klinische Bewegingswetenschappen, Faculteit Bewegingswetenschappen, Vrije Universiteit, Van der Boechorststraat 9, 1081 BT, Amsterdam, The Netherlands
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Guus C. Baan,
Guus C. Baan
Instituut voor Fundamentele en Klinische Bewegingswetenschappen, Faculteit Bewegingswetenschappen, Vrije Universiteit, Van der Boechorststraat 9, 1081 BT, Amsterdam, The Netherlands
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Peter A. Huijing,
Peter A. Huijing
Instituut voor Fundamentele en Klinische Bewegingswetenschappen, Faculteit Bewegingswetenschappen, Vrije Universiteit, Van der Boechorststraat 9, 1081 BT, Amsterdam, The Netherlands
and Integrated Biomedical Engineering for Restoration of Human Function, Instituut voor Biomedische Technologie, Department of Biomechanical Engineering, Universiteit Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
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Can A. Yucesoy,
Can A. Yucesoy
Integrated Biomedical Engineering for Restoration of Human Function, Instituut voor Biomedische Technologie, Department of Biomechanical Engineering, Universiteit Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
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Bart H. F. J. M. Koopman,
Bart H. F. J. M. Koopman
Integrated Biomedical Engineering for Restoration of Human Function, Instituut voor Biomedische Technologie, Department of Biomechanical Engineering, Universiteit Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
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Henk J. Grootenboer
Henk J. Grootenboer
Integrated Biomedical Engineering for Restoration of Human Function, Instituut voor Biomedische Technologie, Department of Biomechanical Engineering, Universiteit Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
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Huub Maas
Instituut voor Fundamentele en Klinische Bewegingswetenschappen, Faculteit Bewegingswetenschappen, Vrije Universiteit, Van der Boechorststraat 9, 1081 BT, Amsterdam, The Netherlands
Guus C. Baan
Instituut voor Fundamentele en Klinische Bewegingswetenschappen, Faculteit Bewegingswetenschappen, Vrije Universiteit, Van der Boechorststraat 9, 1081 BT, Amsterdam, The Netherlands
Peter A. Huijing
Instituut voor Fundamentele en Klinische Bewegingswetenschappen, Faculteit Bewegingswetenschappen, Vrije Universiteit, Van der Boechorststraat 9, 1081 BT, Amsterdam, The Netherlands
and Integrated Biomedical Engineering for Restoration of Human Function, Instituut voor Biomedische Technologie, Department of Biomechanical Engineering, Universiteit Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
Can A. Yucesoy
Integrated Biomedical Engineering for Restoration of Human Function, Instituut voor Biomedische Technologie, Department of Biomechanical Engineering, Universiteit Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
Bart H. F. J. M. Koopman
Integrated Biomedical Engineering for Restoration of Human Function, Instituut voor Biomedische Technologie, Department of Biomechanical Engineering, Universiteit Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
Henk J. Grootenboer
Integrated Biomedical Engineering for Restoration of Human Function, Instituut voor Biomedische Technologie, Department of Biomechanical Engineering, Universiteit Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
Contributed by the Bioengineering Division for publication in the JOURNAL OF BIOMECHANICAL ENGINEERING. Manuscript received by the Bioengineering Division February 3, 2003; revision received April 4, 2003. Associate Editor: L. Soslowsky.
J Biomech Eng. Oct 2003, 125(5): 745-753 (9 pages)
Published Online: October 9, 2003
Article history
Received:
February 3, 2003
Revised:
April 4, 2003
Online:
October 9, 2003
Citation
Maas , H., Baan, G. C., Huijing, P. A., Yucesoy , C. A., Koopman , B. H. F. J. M., and Grootenboer, H. J. (October 9, 2003). "The Relative Position of EDL Muscle Affects the Length of Sarcomeres Within Muscle Fibers: Experimental Results and Finite-Element Modeling ." ASME. J Biomech Eng. October 2003; 125(5): 745–753. https://doi.org/10.1115/1.1615619
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