Transvertebral direct current stimulation paired with locomotor training in chronic spinal cord injury: A case study

Elizabeth Salmon Powell, Cheryl Carrico, Ravi Raithatha, Emily Salyers, Andrea Ward, Lumy Sawaki

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


STUDY DESIGN: This double-blind, sham-controlled, crossover case study combined transvertebral direct current stimulation (tvDCS) and locomotor training on a robot-assisted gait orthosis (LT-RGO). OBJECTIVE: Determine whether cathodal tvDCS paired with LT-RGO leads to greater changes in function and neuroplasticity than sham tvDCS paired with LT-RGO. SETTING: University of Kentucky (UK) HealthCare Stroke and Spinal Cord Neurorehabilitation Research at HealthSouth Cardinal Hill Hospital. METHODS: A single subject with motor incomplete spinal cord injury (SCI) participated in 24 sessions of sham tvDCS paired with LT-RGO before crossover to 24 sessions of cathodal tvDCS paired with LT-RGO. Functional outcomes were measured with 10 Meter Walk Test (10MWT), 6 Minute Walk Test (6MWT), Spinal Cord Independence Measure-III (SCIM-III) mobility component, lower extremity manual muscle test (MMT), and Berg Balance Scale (BBS). Corticospinal changes were assessed using transcranial magnetic stimulation. RESULTS: Improvement in 10MWT speed, SCIM-III mobility component, and BBS occurred with both conditions. 6MWT worsened after sham tvDCS and improved after cathodal tvDCS. MMT scores for both lower extremities improved following sham tvDCS but decreased following cathodal tvDCS. Corticospinal excitability increased following cathodal tvDCS but not sham tvDCS. CONCLUSION: These results suggest that combining cathodal tvDCS and LT-RGO may improve functional outcomes, increase corticospinal excitability, and possibly decrease spasticity. Randomized controlled trials are needed to confirm these conclusions. SPONSORSHIP: This publication was supported by the National Center for Research Resources and the National Center for Advancing Translational Sciences, National Institutes of Health, through Grant UL1TR000117, and the HealthSouth Cardinal Hill Stroke and Spinal Cord Endowment (1215375670).

Original languageEnglish
Pages (from-to)27-35
Number of pages9
Issue number1
StatePublished - Feb 10 2016

Bibliographical note

Publisher Copyright:
© 2016 - IOS Press and the authors. All rights reserved.


  • Neuromodulation
  • lower extremity
  • motor function
  • neuroplasticity
  • transcutaneous spinal direct current stimulation
  • treadmill training

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation
  • Clinical Neurology


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