Abstract
When muscle fragments are compressed, intracellular water leaks out. Unexpectedly, y-intercepts of regression lines in resting and active states become negative, implying “negative compression”. It seems that in resting state there is a kind of mechanical equilibrium between proteins and water. This protein-water complex in muscle behaves like a synthesized elastomer under moderate extension, (less than 10%). Employing the data presented by Richie & Wilkie (1958), validity of elastomer model is examined.
Compression study also shows that in active state a frictional drag of intracellular water decreases markedly. It leads to the assumption that the negative mechanical resistance may play a role in regenerative activation.
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References
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Ogata, M. Proc. Japan Acad. B72, 137–141 (1996).
Richie, J.M., & Wilkie, D.R. J. Physiol. Lond. 143, 104–113 (1958).
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© 1998 Plenum Press, New York
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Ogata, M. (1998). Hydrodynamic Properties of Water in Contractile System. In: Sugi, H., Pollack, G.H. (eds) Mechanisms of Work Production and Work Absorption in Muscle. Advances in Experimental Medicine and Biology, vol 453. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-6039-1_17
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DOI: https://doi.org/10.1007/978-1-4684-6039-1_17
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