Interventions involving repetitive practice improve strength after stroke: a systematic review.

Questions: Do interventions involving repetitive practice improve strength after stroke? Are any improvements in strength accompanied by improvements in activity?
Design: Systematic review of randomised trials with meta-analysis.
Participants: Adults who have had a stroke.
Intervention: Any intervention involving repetitive practice compared with no intervention or a sham intervention.
Outcome Measures: The primary outcome was voluntary strength in muscles trained as part of the intervention. The secondary outcomes were measures of lower limb and upper limb activity.
Results: Fifty-two studies were included. The overall SMD of repetitive practice on strength was examined by pooling post-intervention scores from 46 studies involving 1928 participants. The SMD of repetitive practice on strength when the upper and lower limb studies were combined was 0.25 (95% CI 0.16 to 0.34, I ² =44%) in favour of repetitive practice. Twenty-four studies with a total of 912 participants investigated the effects of repetitive practice on upper limb activity after stroke. The SMD was 0.15 (95% CI 0.02 to 0.29, I ² =50%) in favour of repetitive practice on upper limb activity. Twenty studies with a total of 952 participants investigated the effects of repetitive practice on lower limb activity after stroke. The SMD was 0.25 (95% CI 0.12 to 0.38, I ² =36%) in favour of repetitive practice on lower limb activity.
Conclusion: Interventions involving repetitive practice improve strength after stroke, and these improvements are accompanied by improvements in activity.
Review Registration: PROSPERO CRD42017068658. [de Sousa DG, Harvey LA, Dorsch S, Glinsky JV (2018) Interventions involving repetitive practice improve strength after stroke: a systematic review. Journal of Physiotherapy 64: 210-221].
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