Interference between cognition, double-limb support, and swing during gait in community-dwelling individuals poststroke.

Abstract:

BACKGROUND:Dual tasking can interfere with activity after stroke. OBJECTIVE:The authors examined the interactions between 3 different cognitive tasks and the swing and double-limb support (DLS) components of the gait cycle in community-dwelling individuals poststroke. METHODS:Acquisition of cognitive and gait data were synchronized to study the cognitive-motor interference effects during the different phases of the gait cycle. Participants performed 3 different cognitive tasks in isolation and in combination with walking as well as a single walking task. Tasks were performed continuously for 3 minutes, generating 131 +/- 39 gait cycles per person for analysis for each walking trial. Data were analyzed for 8 participants 7.6 +/- 4.2 months poststroke. RESULTS:A significant increase was found in the proportion of the gait cycle spent in DLS in dual-task walking because of an increased duration of the DLS phase associated with paretic weight acceptance. There was a significant dual-task effect on nonparetic swing duration: participants reduced the amount of time in paretic single-limb stance in the 3 dual-task conditions. Temporal asymmetry of gait did not increase significantly under dual-task conditions. Reaction times were not affected by whether the stimuli were present during the swing or DLS phase of the gait cycle. CONCLUSIONS:The findings from this pilot study provide evidence that cognitive-motor interference during gait may be influenced by the phase of the gait cycle, especially DLS involving paretic weight acceptance, which may affect community ambulators with hemiparetic stroke.

authors

Plummer-D'Amato P,Altmann LJ,Behrman AL,Marsiske M

doi

10.1177/1545968309357926

subject

Has Abstract

pub_date

2010-07-01 00:00:00

pages

542-9

issue

6

eissn

1545-9683

issn

1552-6844

pii

1545968309357926

journal_volume

24

pub_type

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