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Home > Journals > European Journal of Physical and Rehabilitation Medicine > Past Issues > Europa Medicophysica 2001 March;37(1) > Europa Medicophysica 2001 March;37(1):11-3



A Journal on Physical Medicine and Rehabilitation after Pathological Events

Official Journal of the Italian Society of Physical and Rehabilitation Medicine (SIMFER), European Society of Physical and Rehabilitation Medicine (ESPRM), European Union of Medical Specialists - Physical and Rehabilitation Medicine Section (UEMS-PRM), Mediterranean Forum of Physical and Rehabilitation Medicine (MFPRM), Hellenic Society of Physical and Rehabilitation Medicine (EEFIAP)
In association with International Society of Physical and Rehabilitation Medicine (ISPRM)
Indexed/Abstracted in: CINAHL, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
Impact Factor 2,063

Frequency: Bi-Monthly

ISSN 1973-9087

Online ISSN 1973-9095


Europa Medicophysica 2001 March;37(1):11-3


Normal myoelectric signal and its use in functional electrical stimulation in spinal cord injury patients

Saccavini M., Bizzarrini E., Galassi F., Dolfo E., Zampa A., Cappellazzo A. *, Pascolo P. *

From the Biomechanics Functional Area Physical Medicine and Rehabilitation-Spinal Unit Institute of Physical Medicine and Rehabilitation ASS n. 4 - Medio Friuli, Udine
*Chair of Mechanics Applied to Machines Department of Civil Engineering University of Udine, Italy

The aim of ­this ­study was to derive a nor­mal myoe­lec­tri­cal sig­nal ­using sur­face elec­trodes and admin­is­ter it, ­after suit­able amplifi­ca­tion, as a stimulation wave to the ­same ­source mus­cle, eval­u­at­ing the mechan­i­cal ­response. We ­used an elec­tro­myo­graph con­nect­ed to an ampli­fi­er and we posi­tioned the elec­trodes ­onto the ­skin ­layers ­above the mus­cle ­mass of the ­left arm ­biceps in a sub­ject who was ­asked to car­ry out a ­series of vol­un­tary con­trac­tions in isom­e­try ­using the great­est pos­sible exer­tion. The surface EMG (EMG_S) pattern ­that pro­duced the great­est ­increase in ­peak ­force was select­ed, mul­ti­plied n ­times and inject­ed ­into the ­source mus­cle in ­order to admin­is­ter a stim­u­la­tion ­trace ­using ­more “phys­io­log­i­cal” meth­ods, ­thus avoid­ing the use of exces­sive­ly fatigu­ing ­wave pack­ets ­when car­ry­ing out the ges­ture. The EMG_S ­wave ­derived and sub­se­quent­ly admin­is­tered to the mus­cle pro­duced a ­force ­which was approx­i­mate­ly 40% ­that pro­duced by vol­un­tary con­trac­tion, dou­bling the volt­age. This ­study was car­ried out ­with a ­view to ­using the elec­tro­myo­graph­ic sur­face sig­nal as a suit­able stim­u­lus for the exci­ta­tion of stri­at­ed skel­e­tal mus­cle.

language: English


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