Article

Main myoélectrique -
OBJECTIVE: To compare 3 different types of myoelectric signal training. DESIGN: A cohort analytic study. SETTING: University laboratory.
Able-bodied right-handed participants (N=34) randomly assigned to 1 of 3 groups.
INTERVENTIONS: Participants trained hand opening and closing on 3 consecutive
days. One group trained with a virtual myoelectric hand presented on a computer
screen, 1 group trained with an isolated prosthetic hand, and 1 group trained
with a prosthetic simulator. One half of the participants trained with their
dominant side, and the other half trained with their nondominant side. Before and
after the training period, a test was administered to determine the improvement
in skill. Participants were asked to open and close the hand on 3 different
velocities at command. MAIN OUTCOME MEASURES: Peak velocity, mean velocity, and
number of peaks in the myoelectric signal of hand opening and closing. RESULTS:
No differences were found for the different types of training; all participants
learned to control the myoelectric hand. However, differences in learning
abilities were revealed. After learning, a subgroup of the participants could
produce clearly distinct myoelectric signals, which resulted in the ability to
open and close the hand at 3 different speeds, whereas others could not produce
distinct myoelectric signals. CONCLUSIONS: Acquired control of a myoelectric hand
is irrespective of the type of training. Prosthetic users may differ in learning
capacity; this should be taken into account when choosing the appropriate type of
control for each patient.

Langue : ANGLAIS