Relationship Between Dual-Task Gait Speed and Walking Activity Poststroke
Background and Purpose—Gait speed does not adequately predict whether stroke survivors will be active in the community. This may be because traditional single-task gait speed does not sufficiently reproduce the demands of walking in the real world. This study assessed whether dual-task gait speed accounts for variance in daily ambulatory activity above what can be predicted with habitual (single task) gait speed in community-dwelling stroke survivors.
Methods—Twenty-eight community-dwelling individuals, 58.2 years of age (SD=16.6), 8.9 months poststroke (interquartile range, 3.7–19.4), completed a gait and cognitive task in single- and dual-task conditions. Daily ambulatory activity was captured using a physical activity monitor. A regression analysis examined R2 changes with single- and dual-task gait speed.
Results—Single-task gait speed explained 15.3% of the variance in daily ambulatory activity (P=0.04). Adding dual-task gait speed to the regression model increased the variance explained by an additional 20.6% (P=0.04).
Conclusions—Gait speed assessed under attention-demanding conditions may improve explanation of variance in daily ambulatory activity after stroke.
- Received June 6, 2017.
- Revision received March 3, 2018.
- Accepted March 12, 2018.
- © 2018 American Heart Association, Inc.