BACKGROUND: No rehabilitation intervention has effectively improved functional use of the arm and hand in patients with severe upper limb paresis after stroke. Pilot studies suggest the potential for transcranial direct current stimulation and bilateral robotic training to enhance gains. OBJECTIVE: In a double-blind, randomized trial the combination of these interventions was tested. METHODS: This study randomized 96 patients with an ischemic supratentorial lesion of 3 to 8 weeks' duration with severe impairment of motor control with a Fugl-Meyer score (FMS) for the upper limb <18 into 3 groups. For 6 weeks, group A received anodal stimulation of the lesioned hemisphere, group B received cathodal stimulation of the nonlesioned side for 20 minutes at 2.0 mA, and group C received sham stimulation. The electrodes were placed over the hand area and above the contralateral orbit. Contemporaneously, the subjects practiced 400 repetitions each of 2 different bilateral movements on a robotic assistive device. RESULTS: The groups were matched at onset. The FMS improved in all patients at 6 weeks (P < .001). No between-group differences were found; initial versus finish FMS scores were 7.8 ± 3.8 versus 19.1 ± 14.4 in group A, 7.9 ± 3.4 versus 18.8 ± 10.5 in group B, and 8.2 ± 4.4 versus 19.2 ± 15.0 in group C. No significant changes between groups were present at 3 months. CONCLUSIONS: Neither anodal nor cathodal transcranial direct current stimulation enhanced the effect of bilateral arm training in this exploratory trial of patients with cortical involvement and severe weakness. Unilateral hand training and upregulation of the nonlesioned hemisphere might also be tried in this population.
RCT Entities:
BACKGROUND: No rehabilitation intervention has effectively improved functional use of the arm and hand in patients with severe upper limb paresis after stroke. Pilot studies suggest the potential for transcranial direct current stimulation and bilateral robotic training to enhance gains. OBJECTIVE: In a double-blind, randomized trial the combination of these interventions was tested. METHODS: This study randomized 96 patients with an ischemic supratentorial lesion of 3 to 8 weeks' duration with severe impairment of motor control with a Fugl-Meyer score (FMS) for the upper limb <18 into 3 groups. For 6 weeks, group A received anodal stimulation of the lesioned hemisphere, group B received cathodal stimulation of the nonlesioned side for 20 minutes at 2.0 mA, and group C received sham stimulation. The electrodes were placed over the hand area and above the contralateral orbit. Contemporaneously, the subjects practiced 400 repetitions each of 2 different bilateral movements on a robotic assistive device. RESULTS: The groups were matched at onset. The FMS improved in all patients at 6 weeks (P < .001). No between-group differences were found; initial versus finish FMS scores were 7.8 ± 3.8 versus 19.1 ± 14.4 in group A, 7.9 ± 3.4 versus 18.8 ± 10.5 in group B, and 8.2 ± 4.4 versus 19.2 ± 15.0 in group C. No significant changes between groups were present at 3 months. CONCLUSIONS: Neither anodal nor cathodal transcranial direct current stimulation enhanced the effect of bilateral arm training in this exploratory trial of patients with cortical involvement and severe weakness. Unilateral hand training and upregulation of the nonlesioned hemisphere might also be tried in this population.
Authors: Vishwanath Sankarasubramanian; Andre G Machado; Adriana B Conforto; Kelsey A Potter-Baker; David A Cunningham; Nicole M Varnerin; Xiaofeng Wang; Ken Sakaie; Ela B Plow Journal: Clin Neurophysiol Date: 2017-03-21 Impact factor: 3.708
Authors: David A Cunningham; Nicole Varnerin; Andre Machado; Corin Bonnett; Daniel Janini; Sarah Roelle; Kelsey Potter-Baker; Vishwanath Sankarasubramanian; Xiaofeng Wang; Guang Yue; Ela B Plow Journal: Restor Neurol Neurosci Date: 2015 Impact factor: 2.406
Authors: Giovanni Di Pino; Giovanni Pellegrino; Giovanni Assenza; Fioravante Capone; Florinda Ferreri; Domenico Formica; Federico Ranieri; Mario Tombini; Ulf Ziemann; John C Rothwell; Vincenzo Di Lazzaro Journal: Nat Rev Neurol Date: 2014-09-09 Impact factor: 42.937