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Cyclical electrical stimulation increases strength and improves activity after stroke: a systematic review.
Lucas R Nascimento1, Stella M Michaelsen2, Louise Ada3
1Discipline of Physiotherapy, The University of Sydney, Australia; Discipline of Physiotherapy, Universidade Federal de Minas Gerais.
Journal of Physiotherapy
|May 27, 2014
Summary
Electrical stimulation therapy significantly enhances muscle strength and improves daily activity in stroke survivors. These positive effects persist long-term, indicating sustained functional recovery after the intervention concludes.
Area of Science:
- Neurorehabilitation
- Clinical Electrophysiology
- Stroke Recovery Research
Background:
- Stroke frequently leads to muscle weakness and functional deficits.
- Restoring muscle strength and activity is crucial for post-stroke recovery.
- Electrical stimulation is a potential therapeutic modality for stroke rehabilitation.
Purpose of the Study:
- To systematically review and meta-analyze the efficacy of electrical stimulation for increasing strength after stroke.
- To determine if strength gains and activity improvements are maintained post-intervention.
- To assess carry-over effects of electrical stimulation on functional activity.
Main Methods:
- Systematic review and meta-analysis of randomized controlled trials.
- Inclusion of adult stroke survivors undergoing cyclical electrical stimulation for strength enhancement.
- Outcome measures included maximal voluntary contraction strength and standardized measures of activity.
Main Results:
- Electrical stimulation significantly increased muscle strength (SMD 0.47, 95% CI 0.26 to 0.68).
- Strength benefits were maintained post-intervention (SMD 0.33, 95% CI 0.07 to 0.60).
- Activity levels improved with electrical stimulation (SMD 0.30, 95% CI 0.05 to 0.56) and were sustained post-intervention (SMD 0.38, 95% CI 0.09 to 0.66).
Conclusions:
- Cyclical electrical stimulation is effective in improving strength and activity in stroke patients.
- The observed benefits on strength and activity are maintained beyond the intervention period.
- Sustained improvements suggest integration into daily life activities, highlighting long-term functional recovery potential.
