Announcement

Collapse
No announcement yet.

EMG normalization during walking

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

  • EMG normalization during walking

    Dear Biomch-list members,

    I am interested in quantifying co-activation of antagonistic muscles during
    walking in 2 different adult population groups. Surface EMG will be used to
    measure the EMG signals from selected muscles during the activity, and the
    raw EMG will be processed to derive a time-series RMS signal for each
    muscle. The time-series RMS signals will be temporally normalized with
    regard to the cycle time, i.e. to a percentage of the gait cycle.

    My question is, should the amplitude of the EMG measured from a muscle
    during walking be normalized to a percentage of either: a) the peak EMG
    amplitude measured during a maximal voluntary isometric contraction, b) the
    peak EMG amplitude measured during a maximal voluntary isotonic contraction,
    or, c) the peak EMG amplitude measured during the activity?

    >From my review of the literature, it appears that methods a) & c) are the
    most common and both appear to have their strengths and weaknesses. Any
    comments on which of the above methods are:

    - the most valid,
    - show the greatest intra-subject reliability and reproducibility,
    and/or
    - show the least inter-subject variability,

    would be greatly appreciated. Also if anyone has used or knows of other
    methods to normalize the amplitude of dynamic EMG during submaximal
    activities, please let me know.

    I will post a summary of responses in a fortnight.

    Thank-you

    Peter Mills






    Peter Mills
    School of Physiotherapy and Exercise Science
    Griffith University Gold Coast
    Southport QLD 4215
    Australia
    p.mills@mailbox.gu.edu.au

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