Measurement of muscle and tendon stiffness in man

  • C. S. Cook
  • M. J. N. McDonagh
Short Communication

Abstract

Human first dorsal interosseous muscle was stimulated tetanically using several levels of percutaneous electrical current which produced forces in the muscle-tendon complex of between 30% and 100% of maximum. During the tetanus the muscle was subjected to a small fast stretch. The ratio of the force response to the displacement of the muscle-tendon complex gave a measure of the stiffness of the total complex. An adaptation of the method of Morgan (1977) allowed the stiffness to be separated into two components the stiffness of the muscle fibres and the stiffness of the tendon. The results showed that at full activation the stiffness of the muscle fibres and the tendon are approximately the same. The normalised stiffness values obtained in the experiments compared well with animal data.

Key words

Muscle Human Stiffness Tendon 

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References

  1. Bennett MB, Ker RF, Dimery NJ, Alexander RMcN (1986) Mechanical properties of various mammalian tendons. J Zool Lond (A) 209:537–548Google Scholar
  2. Cook CS, McDonagh MJN (1995) Force responses to controlled stretches of electrically stimulated human muscle-tendon complex. J Exp Physiol 80:477–490Google Scholar
  3. Ettema GJC, Huijing PA (1990) Architecture and elastic properties of the series elastic element of a muscle-tendon complex. Multiple Muscle Systems: biomechanics and Movement Organisation. Winters JM, Woo SL-Y (eds). Springer, New York, pp 57–68Google Scholar
  4. Ettena GJC, Huijing PA, de Haan A (1992) The potentiating effect of prestretch on the contractile performance of rat gastrocnemius medialis muscle during subsequent shortening and isometric contractions. J Exp Biol 165:121–136Google Scholar
  5. Joyce GC, Rack PHM (1969) Isotonic lengthening and shortening movements of cat soleus muscle. J Physiol 204:475–491Google Scholar
  6. Morgan DL (1977) Separation of active and passive components: short-range stiffness of muscle. Am J Physiol 232: C45-C49Google Scholar
  7. Proske U, Morgan DL (1984) Stiffness of cat soleus muscle during activation of part of muscle. J Neurophysiol 52:459–468Google Scholar
  8. Rack PHM, Westbury DR (1984) Elastic properties of the cat soleus tendon and their functional importance. J Physiol 347:479–495Google Scholar

Copyright information

© Springer-Verlag 1996

Authors and Affiliations

  • C. S. Cook
    • 1
  • M. J. N. McDonagh
    • 2
  1. 1.Department of Physiology and School of Sport and Exercise SciencesUniversity of BirminghamBirminghamUK
  2. 2.School of Sport and Exercise SciencesUniversity of BirminghamBirminghamUK

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