Abstract
Background
Stroke
survivors often show reduced walking velocity and gait asymmetry. These
gait abnormalities are associated with reduced propulsion of the
paretic leg. This review aimed to provide an overview of the potential
effectiveness of post-stroke rehabilitation interventions to improve
paretic propulsion, ankle kinetics and walking velocity.
Methods
A
systematic search was performed in Pubmed, Web of Science, Embase, and
Pedro. Studies were eligible if they reported changes in propulsion
measures (impulse, peak value and symmetry ratios) or ankle kinetics
(moment and power) following intervention in stroke survivors (group
size ≥10). Study selection, data extraction and quality assessment were
performed independently by two authors.
Findings
A
total of 28 studies were included, of which 25 studies applied exercise
interventions, two studies focused on surgical interventions, and one
on non-invasive brain stimulation. The number of high-quality trials was
limited (N = 6; score Downs and Black scale ≥19). Propulsion
measures were the primary outcome in eight studies. In general, mixed
results were reported with 14 interventions yielding improvements in
propulsion and ankle kinetics. In contrast, gains in walking velocity
were observed in the vast majority of studies (N = 20 out of 23).
Interpretation
Interventions
that yielded gains in propulsion appeared to have in common that they
challenged and/or enabled the utilization of latent propulsive capacity
of the paretic leg during walking. Walking speed generally increased,
regardless of the observed change in propulsion, suggesting the use of
compensatory mechanisms. Findings should, however, be interpreted with
some caution, as the evidence base for this emerging focus of
rehabilitation is limited.
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