Article

OBJECTIVE: To investigate whether the compensatory trunk movements of stroke
survivors observed during reaching tasks can be decreased by force and visual
feedback, and to examine whether one of these feedback modalities is more
efficacious than the other in reducing this compensatory tendency. DESIGN:
Randomized crossover trial. SETTING: University research laboratory.
PARTICIPANTS: Community-dwelling older adults (N=15; 5 women; mean age, 64+/-11y)
with hemiplegia from nontraumatic hemorrhagic or ischemic stroke (>3mo
poststroke), recruited from stroke recovery groups, the research group's website,
and the community. INTERVENTIONS: In a single session, participants received
augmented feedback about their trunk compensation during a bimanual reaching
task. Visual feedback (60 trials) was delivered through a computer monitor, and
force feedback (60 trials) was delivered through 2 robotic devices. MAIN OUTCOME
MEASURES: Primary outcome measure included change in anterior trunk displacement
measured by motion tracking camera. Secondary outcomes included trunk rotation,
index of curvature (measure of straightness of hands' path toward target), root
mean square error of hands' movement (differences between hand position on every
iteration of the program), completion time for each trial, and posttest
questionnaire to evaluate users' experience and system's usability. RESULTS: Both
visual (-45.6% [45.8 SD] change from baseline, P=.004) and force (-41.1% [46.1
SD], P=.004) feedback were effective in reducing trunk compensation. Scores on
secondary outcome measures did not improve with either feedback modality. Neither
feedback condition was superior. CONCLUSIONS: Visual and force feedback show
promise as 2 modalities that could be used to decrease trunk compensation in
stroke survivors during reaching tasks. It remains to be established which one of
these 2 feedback modalities is more efficacious than the other as a cue to reduce
compensatory trunk movement.
CI - Copyright (c) 2017 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS