No announcement yet.

muscle model

This topic is closed.
  • Filter
  • Time
  • Show
Clear All
new posts

  • muscle model

    Dear colleagues,

    Several days ago I posted message asking for values of the parallel
    elastic components in the wrist and elbow muscles. I would like to thank
    all those who replied with some very helpful information.

    Below is a summary of replies for those of you who expressed their interest.

    Thanks again
    Orit Yarden

    From: James Fee

    Take a look at:
    Winters, J. M. & Stark, L "Analysis of Fundamental Human
    Movement Patterns Through the Use of In-Depth Antagonistic
    Muscle Models" IEEE Trans Biomedical Engr Vol BME-32 No. 10
    pp 826-839 October 1985.

    Subject: wrist parallel elasticity

    We haven't measured parallel elasticity in individual wrist muscles, but did
    find that the passive elasticity about the wrist was very small over the middle
    90-100 degrees of the range of motion ( < 0.1 Nm over the middle 80 degrees,
    Lehman and Calhoun, An identified model for human wrist movements, Exp. Brain
    Res 81:199-208, 1990). Lakie, Walsh and Wright did a sinusoidal i/o
    (J. Physiol 353:265-285, 1984) and also found small net elasticity. Rick
    Lieber may have individual muscle values.

    Steve Lehman
    University of California, Berkeley

    From: "Roger V. Gonzalez"

    You might try these references to get good numbers for general Parallel elastic
    Component of muscle. The references are:

    Zajac, F.E., and Gordon, M.E. (1989) Determining muscle's force and action in
    multi-articular movements. Exercise
    and Sport ScienceReview, 17:187-230.

    Pandy, M.G., Zajac, F.E., Sim, E., and Levine, W.S. (1990) An optimal control
    model for maximum-height
    human jumping. J. Biomechanics 23(12):1185-1198.

    Roger Gonzalez |
    The University of Texas at Austin |
    Mechanical/Biomedical Engineering |
    Engineering Teaching Center, 3.104 | __
    Austin, Texas 78712 | / \/
    (512) 471-5718 / 471-5615 | \__/\
    FAX: (512) 471-7683 |
    E-mail: |