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Dose-response relation between neuromuscular electrical stimulation and upper-extremity function in patients with
Background And Purpose:
The purpose of our study was to investigate the effects of different doses of neuromuscular electrical stimulation (NMES) on upper-extremity function in acute stroke patients with severe motor deficit.
Methods:
Sixty-six acute stroke patients were randomized to 3 groups: high NMES, low NMES, or control. The low-NMES group received 30 minutes of stimulation per day, and the high-NMES group received 60 minutes per day, for 4 weeks. The Fugl-Meyer Motor Assessment Scale, Action Research Arm Test, and Motor Activity Log were used to assess the patients at baseline, 4 weeks, and 12 weeks post baseline (follow-up).
Results:
Both NMES groups showed significant improvement on Fugl-Meyer Motor Assessment and Action Research Arm Test scales compared with the control group at week 4 and follow-up. The high-NMES group showed treatment effects similar to those of the low-NMES group.
Conclusions:
Higher and lower doses of NMES led to similar improvements in motor function. A minimum of 10 hours of NMES in combination with regular rehabilitation may improve recovery of arm function in stroke patients during the acute stage.
