Effects of mental imagery training combined electromyogram-triggered neuromuscular electrical stimulation on upper limb function and activities of daily living in patients with chronic stroke: a randomized controlled trial

Abstract

Purpose:Previous studies have suggested that electromyogram-triggered neuromuscular electrical stimulation is beneficial in enhancing the upper limb function of patients with stroke. However, mental imagery training combined with electromyogram-triggered neuromuscular electrical stimulation investigation has received a little attention. This study investigated effects of mental imagery training combined with electromyogram-triggered neuromuscular electrical stimulation on upper limb function and activities of daily living of patients with chronic stroke. Method:Sixty-eight participants were randomly allocated to mental imagery training combined with electromyogram-triggered neuromuscular electrical stimulation group or the electromyogram-triggered neuromuscular electrical stimulation group. Both the groups performed each intervention for 30 min a day, 5 days a week, for 6 weeks. The Action Research Arm Test, Fugl-Meyer Assessment, and Korean version of Modified Barthel Index were used for outcome measures. Results:After the intervention, both the groups showed significant improvements in all outcome measures. However, there were no significant differences in outcome measures between both the groups. Conclusions:These results indicated that both mental imagery training combined with electromyogram-triggered neuromuscular electrical stimulation and electromyogram-triggered neuromuscular electrical stimulation are beneficial to improve the upper limb function and activities of daily living of patients with chronic stroke.