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Randomized Controlled Trial
. 2016 Nov;30(10):978-987.
doi: 10.1177/1545968316650278. Epub 2016 May 24.

Upper-Limb Recovery After Stroke: A Randomized Controlled Trial Comparing EMG-Triggered, Cyclic, and Sensory Electrical Stimulation

Richard D Wilson  1 , Stephen J Page  2 , Michael Delahanty  3 , Jayme S Knutson  4 , Douglas D Gunzler  5 , Lynne R Sheffler  4 , John Chae  4
Affiliations
Randomized Controlled Trial

Upper-Limb Recovery After Stroke: A Randomized Controlled Trial Comparing EMG-Triggered, Cyclic, and Sensory Electrical Stimulation

Richard D Wilson et al. Neurorehabil Neural Repair. 2016 Nov.

Abstract

Background and purpose: This study compared the effect of cyclic neuromuscular electrical stimulation (NMES), electromyographically (EMG)-triggered NMES, and sensory stimulation on motor impairment and activity limitations in patients with upper-limb hemiplegia.

Methods: This was a multicenter, single-blind, multiarm parallel-group study of nonhospitalized hemiplegic stroke survivors within 6 months of stroke. A total of 122 individuals were randomized to receive either cyclic NMES, EMG-triggered NMES, or sensory stimulation twice every weekday in 40-minute sessions, over an 8 week-period. Patients were followed for 6 months after treatment concluded.

Results: There were significant increases in the Fugl-Meyer Assessment [F(1, 111) = 92.6, P < .001], FMA Wrist and Hand [F(1, 111) = 66.7, P < .001], and modified Arm Motor Ability Test [mAMAT; time effect: F(1, 111) = 91.0, P < .001] for all 3 groups. There was no significant difference in the improvement among groups in the FMA [F(2, 384) = 0.2, P = .83], FMA Wrist and Hand [F(2, 384) = 0.4, P = .70], or the mAMAT [F(2, 379) = 1.2, P = .31].

Conclusions: All groups exhibited significant improvement of impairment and functional limitation with electrical stimulation therapy applied within 6 months of stroke. Improvements were likely a result of spontaneous recovery. There was no difference based on the type of electrical stimulation that was administered.

Trial registration: ClinicalTrials.gov NCT00142792.

Keywords: electrical stimulation; function; recovery; stroke.

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Figures

Figure 1
Figure 1
Participant flow diagram.
Figure 2
Figure 2
Fugl-Meyer Assessment, Upper Limb for each treatment group over the course of the study. The shaded areas indicate the 95% confidence interval of the group mean.
Figure 3
Figure 3
Arm Mobility Activity Test for each treatment group over the course of the study. The shaded areas indicate the 95% confidence interval of the group mean.
See this image and copyright information in PMC

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