Article

OBJECTIVES: To assess rhythm abilities, to describe their relation to clinical
presentation, and to determine if rhythm production independently contributes to
temporal gait asymmetry (TGA) poststroke. DESIGN: Cross-sectional. SETTING: Large
urban rehabilitation hospital and university. PARTICIPANTS: Individuals (N=60)
with subacute and chronic stroke (n=39) and data for healthy adults extracted
from a preexisting database (n=21). INTERVENTIONS: Not applicable. MAIN OUTCOME
MEASURES: Stroke group: National Institutes of Health Stroke Scale (NIHSS),
Chedoke-McMaster Stroke Assessment (CMSA) leg and foot scales, Montreal Cognitive
Assessment (MoCA), rhythm perception and production (Beat Alignment Test [BAT]),
and spatiotemporal gait parameters were assessed. TGA was quantified with the
swing time symmetry ratio. Healthy group: age and beat perception scores assessed
by the BAT. Rhythm perception of the stroke group and healthy adults was compared
with analysis of variance. Spearman correlations quantified the relation between
rhythm perception and production abilities and clinical measures. Multiple linear
regression assessed the contribution of rhythm production along with motor
impairment and time poststroke to TGA. RESULTS: Rhythm perception in the stroke
group was worse than healthy adults (F1,56=17.5, P=.0001) Within the stroke
group, rhythm perception was significantly correlated with CMSA leg (Spearman
rho=.33, P=.04), and foot (Spearman rho=.49, P=.002) scores but not NIHSS or MoCA
scores. The model for TGA was significant (F3,35=12.8, P<.0001) with CMSA leg
scores, time poststroke, and asynchrony of rhythm production explaining 52% of
the variance. CONCLUSIONS: Rhythm perception is impaired after stroke, and
temporal gait asymmetry relates to impairments in producing rhythmic movement.
These results may have implications for the use of auditory rhythmic stimuli to
cue motor responses poststroke. Future work will explore brain responses to
rhythm processing poststroke.
CI - Copyright (c) 2018 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS