doi: 10.1161/01.STR.0000016926.77114.A6
(Stroke. 2002;33:1589.)
© 2002 American Heart Association, Inc.
Original Contributions |
Two Coupled Motor Recovery Protocols Are Better Than One
Electromyogram-Triggered Neuromuscular Stimulation and Bilateral Movements
From the Motor Behavior Laboratory, University of Florida, Gainesville.
Correspondence to James Cauraugh, PhD, Motor Behavior Laboratory, PO Box 118206, University of Florida, Gainesville, FL 32611. E-mail jcaura{at}hhp.ufl.edu
Background and Purpose— Overcoming chronic hemiparesis from a cerebrovascular accident (CVA) can be challenging for many patients, especially after the first 12 months after the CVA. With the use of established motor control theories, the present study investigated electromyogram (EMG)-triggered neuromuscular stimulation and bilateral coordination training.
Methods— Twenty-five CVA subjects volunteered to participate in this motor recovery protocol study. Subjects were randomly assigned to 1 of 3 groups: (1) coupled protocol of EMG-triggered stimulation and bilateral movement (n=10); (2) EMG-triggered stimulation and unilateral movement (n=10); or (3) control (n=5). All participants completed 6 hours of rehabilitation during a 2-week period according to group assignments. Motor capabilities of the wrist and fingers were evaluated on the basis of 3 categories of motor tasks in a pretest-posttest control group design.
Results— Significant findings for the (1) number of blocks moved in a functional task, (2) chronometric reaction times to initiate movements, and (3) sustained muscle contraction capability all favored the coupled bilateral movement training and EMG-triggered neuromuscular stimulation protocol group. In addition, the unilateral movement/stimulation group exceeded the control group in the number of blocks moved and rapid onset of muscle contractions.
Conclusions— This new evidence is convincing in that subjects in the coupled protocol group were able to demonstrate enhanced voluntary motor control across 3 categories of tasks. Chronic hemiparesis decreased considerably in the wrist and fingers as CVA patients expanded their motor repertoire.
Key Words: cerebrovascular accident • electromyography • fingers • motor activity • muscle, skeletal • transcutaneous electric nerve stimulation • wrist
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