Abstract
Background.
Controlled whole-body vibration (CWBV) training has been applied to
people with stroke. However, it remains inconclusive if CWBV reduces
fall risk in this population.
Objective.
To (1) assess the
immediate and retention effects of CWBV training on fall risk factors in
people at postacute and chronic stages of stroke and (2) examine if
CWBV dosage is correlated with the effect size (ES) for 3 fall risk
factors: body balance, functional mobility, and knee strength.
Methods.
Twelve randomized controlled trials were included. ES was calculated as
the standardized mean difference, and meta-analyses were completed
using a random-effects model.
Results.
CWBV training may(Not good enough) lead to improved balance and mobility immediately after training (ES = 0.27, P = .03 for balance; ES = 0.34, P = .02 for mobility) but not at the 3-month follow-up test (ES = 0.02, P = .89 for balance; ES = 0.70, P
= .11 for mobility). CWBV affects knee strength capacity with mild ES
(ES = 0.08 and 0.11, respectively, for immediate and retention effect; P ≥ .68 for both). Metaregression indicated that the immediate ES is strongly correlated with training dosage for balance (r = 0.649; P = .029) and mobility (r = 0.785; P = .036).
Conclusions.
CWBV training may benefit balance and mobility immediately, but the
training effect may not persist among people with stroke. Additionally,
the CWBV dosage correlates with the ES for body balance and mobility.
More high-quality studies are needed to determine the retention effects
of CWBV training.
, Andrew J. Butler, PhD
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