Short-term effect of a close-fitting type of walking assistive device on spinal cord reciprocal inhibition

Kei Nakagawa, Masahiro Tomoi, Keita Higashi, Sho Utsumi, Reo Kawano, Eiichiro Tanaka, Kaoru Kurisu, Louis Yuge

Research output: Contribution to journalArticle

Abstract

One of the major problems with walking encountered by patients with spastic hemiplegia is diminished toe clearance due to spasticity of their leg muscles. To improve their walking, a specialized robot assist for ankle movements (RE-Gait) has been utilized. The present study examined the neurophysiological effects whether spinal cord reciprocal Ia inhibition (RI) in the leg was altered by using RE-Gait. Sixteen patients with a clinical diagnosis of stroke were divided into the two groups, RE-Gait walking group (Group R) and normal (controlled) walking group (Group C). In each group, they walked on a flat floor for 15 min with or without RE-Gait. The depression of soleus (Sol) H-reflexes conditioned by common peroneal nerve stimuli with the conditioning-test (C-T) intervals of 1, 2, 3, and 4 ms were assessed before and immediately after each walking session. After the intervention, the LSM (SE) of Sol H-reflex amplitude with 1, 2 and 3 ms C-T interval conditions were significantly decreased in group R (1 ms: 88.15 (4.60), 2 ms: 86.37 (4.60), 3 ms: 89.68 (4.62)) compared to group C (1 ms: 105.57 (4.56), 2 ms: 100.89 (4.58), 3 ms: 107.72 (4.58)) [1 ms: p = 0.012, 2 ms: p = 0.035, 3 ms: p = 0.011]. Walking assistive robot that targets ankle movements might be a new rehabilitation tool for regulating spinal cord excitability.

Original languageEnglish
Pages (from-to)142-147
Number of pages6
JournalJournal of Clinical Neuroscience
Volume77
DOIs
Publication statusPublished - 2020 Jul

Keywords

  • Ankle dorsiflexion
  • Cerebrovascular accident
  • Reciprocal inhibition
  • Walking assistive robot

ASJC Scopus subject areas

  • Surgery
  • Neurology
  • Clinical Neurology
  • Physiology (medical)

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