Announcement

Collapse
No announcement yet.

motor units

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

  • motor units

    Dear colleagues,
    I need for your opinion. The question is whether a strict terminology is
    now accepted for the types of motor units (not muscle fibers), namely:
    fast, slow, fast-fatigueable, fast fatigue - resistant.
    I need also from data and references about the following muscles of the
    upper human limb: biceps brachii, brachialis, brachioradialis, triceps
    brachii and anconeus. The parameters of interest are: number of motor
    units, percent of slow, fast, ... MU, maximal force per one MU, contraction
    time; half relaxation time.
    I were surprised obtaining very different values, even in a paper. For
    example in Johnson et al., (1973), J. of the Neurological Sciences, vol.18,
    the differences inbetween the cadaver specimens are very big - maximal
    value of the percent of slow fibers in a subject is 58.2% , minimal - 20%.
    I realize that these values depend on many factors. It will be enough to me
    even to know which of the two elbow extensors (triceps or anconeus) is
    faster.
    Thank you for your help!
    R.Raikova
    ----------------------------------------------------------
    Assoc. Prof. Rositsa Todorova Raikova
    CENTRE OF BIOMEDICAL ENGINEERING
    BULGARIAN ACADEMY OF SCIENCES
    Acad.G.Bonchev str., Bl.105
    1113 Sofia, Bulgaria
    tel. (+3592) 70 05 27
    fax: (+3592) 72 37 87
    E-mail: rosir@bgcict.acad.bg

    ---------------------------------------------------------------
    To unsubscribe send SIGNOFF BIOMCH-L to LISTSERV@nic.surfnet.nl
    For information and archives: http://isb.ri.ccf.org/biomch-l
    ---------------------------------------------------------------
Working...
X