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Soleus H-Reflex Modulation After Motor Incomplete Spinal Cord Injury: Effects of Body Position and Walking Speed
| Content Provider | Scilit |
|---|---|
| Author | Phadke, Chetan Thompson, Floyd J. Kukulka, Carl C. Nair, Preeti M. Bowden, Mark G. Madhavan, Sangeetha Trimble, Mark H. Behrman, Andrea L. |
| Copyright Year | 2010 |
| Description | Journal: The Journal of Spinal Cord Medicine Objective: To examine position-dependent (semireclined to standing) and walking speed-dependent soleus H-reflex modulation after motor incomplete spinal cord injury (SCI). Participants: Twenty-six patients with motor incomplete SCI (mean: 45 ± 15 years) and 16 noninjured people (mean: 38 ± 14 years). Methods: Soleus H-reflexes were evoked by tibial nerve stimulation. Patients were tested in semireclined and standing positions (experiment 1) and in midstance and midswing positions (experiment 2). Results: H-reflexes were significantly greater after SCI in all positions compared with noninjured people (P < 0.05). Position-dependent modulation from semireclined to standing (normally observed in noninjured people) was absent after SCI. In SCI patients, H-reflex modulation was not significantly different at 1.2 m/s compared with 0.6 m/s treadmill walking speed; in noninjured people, H-reflex modulation was significantly greater at 1.2 m/s compared with 0.6 m/s treadmill walking speed. There was a significant positive correlation between modified Ashworth scores, a clinical measure of spasticity and soleus H-reflex amplitudes tested in all positions. A significant negative correlation was also found between H-reflexes in standing and midstance positions and the amount of assistance patients required to walk. Conclusions: An improvement in position-dependent and walking speed-dependent reflex modulation after SCI may indicate functional recovery. Future studies will use H-reflex testing to track changes as a result of therapeutic interventions. |
| Related Links | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2964025/pdf |
| Ending Page | 378 |
| Page Count | 8 |
| Starting Page | 371 |
| ISSN | 10790268 |
| e-ISSN | 20457723 |
| DOI | 10.1080/10790268.2010.11689715 |
| Journal | The Journal of Spinal Cord Medicine |
| Issue Number | 4 |
| Volume Number | 33 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2010-01-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: The Journal of Spinal Cord Medicine Rehabilitation Spinal Cord Injuries Locomotor Training Walking Speed Assistive Devices Soleus H-reflex |
| Content Type | Text |
| Subject | Neurology (clinical) |
