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Accelerometer-triggered electrical stimulation for reach and grasp in chronic stroke patients: a pilot study
Geraldine Mann1, Paul Taylor, Rod Lane
1National Clinical FES Centre, Salisbury District Hospital, Salisbury, Wiltshire, UK. g.mann@salisburyfes.com
Neurorehabilitation and Neural Repair
|June 2, 2011
Summary
Accelerometer-triggered electrical stimulation improved arm function and reduced spasticity in stroke survivors. This functional task training approach showed lasting benefits 12 weeks post-treatment.
Area of Science:
- Neurorehabilitation
- Biomedical Engineering
- Physical Therapy
Background:
- Electrical stimulation of the upper extremity shows promise for reducing post-stroke impairment.
- Task-specific training combined with on-demand stimulation may enhance functional recovery.
Purpose of the Study:
- To assess the feasibility of using accelerometer-controlled electrical stimulation for elbow, wrist, and finger extensors.
- To enable functional task practice in individuals with chronic hemiparesis.
Main Methods:
- A 12-week intervention involving cyclic and then triggered electrical stimulation for functional reaching practice.
- Outcome measures included the Action Research Arm Test (ARAT), Modified Ashworth Scale (MAS), and patient-reported outcomes (COPM, PIADS).
Main Results:
- Significant improvements in ARAT scores (19 to 32, P = .002) and reductions in spasticity (MAS scores decreased, P < .05).
- Enhanced performance and satisfaction reported in the Canadian Occupational Performance Measure (COPM, P = .001).
- Positive psychosocial impact noted for competence, adaptability, and self-esteem (PIADS, P < .008), with sustained gains at 12 weeks.
Conclusions:
- Accelerometer-triggered electrical stimulation is a feasible adjunct to task training for hemiplegic arm recovery.
- The approach may improve functional ability and quality of life, with sustained effects post-treatment.
- Further evaluation of efficacy and cost-benefit through a randomized trial is warranted.