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Enhancing Upper Limb Function and Motor Skills Post-Stroke Through an Upper Limb Rehabilitation Robot
Published on: September 6, 2024
Postactivation depression changes after robotic-assisted gait training in hemiplegic stroke patients
Carlo Trompetto1, Lucio Marinelli, Laura Mori
1Institute of Neurology, Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genova, Largo Daneo 3, 16132 Genova, Italy.
Gait & Posture
|April 11, 2013
Summary
Robotic-assisted gait training partially restored postactivation depression in stroke patients with spasticity. This physical exercise intervention improved H-reflex modulation, indicating a potential therapeutic benefit for motor control after brain injury.
Area of Science:
- Neuroscience
- Rehabilitation Medicine
- Motor Control
Background:
- Postactivation depression (PAD) is reduced in spasticity and improved by exercise in spinal cord injury.
- The effect of motor training on PAD in spasticity following brain lesions remains unexplored.
Purpose of the Study:
- To investigate the modulation of postactivation depression (PAD) using robotic-assisted gait training in individuals with spastic hemiparesis after stroke.
- To assess changes in soleus H-reflex depression following a 4-week intensive training program.
Main Methods:
- Seven participants with hemiparetic spasticity underwent 12 sessions of robotic-assisted gait training over 4 weeks.
- Postactivation depression was measured by the ratio of H-reflex amplitude at 1 Hz to 0.1 Hz, before (T0), after the first session (T1), and after the last session (T2).
Main Results:
- The 1 Hz/0.1 Hz ratio, indicating reduced PAD, significantly decreased from T0 (0.79±0.26) to T1 (0.56±0.18) and T2 (0.58±0.13).
- This signifies an increase in postactivation depression, suggesting partial normalization.
- No significant difference was observed between T1 and T2.
Conclusions:
- Robotic-assisted gait training partially normalizes postactivation depression in hemiparetic stroke patients.
- This finding demonstrates that physical exercise can positively influence neural plasticity and motor control in post-stroke spasticity.
