title: Effect of working memory and spatial attention tasks on gait in healthy young and older adults.
abstract: Changes in gait parameters induced by the concomitant performance of one of two cognitive tasks activating working memory and spatial attention, was examined in healthy young adults (YA) and older adults (OA). There was a main effect of task condition on gait-speed (p = .02), stride-length (p < .001) and double-support time (p = .04) independent of the group. There were no significant differences between working memory and spatial attention associated gait changes. Working-memory and spatial-attention dual-tasking led to a decrease in gait-speed (p = .09 and 0.01) and stride-length (p = .04 and 0.01) and increase in double-support time (p = .01 and 0.03) in YA and decrease in stride-length (p = .04 and 0.01) alone in OA. Cognitive task associated changes in gait may be a function of limited attentional resources irrespective of the type of cognitive task.
authors.affiliation: L. C. Campbell Cognitive Neurology Research Unit, Heart and Stroke Foundation-Centre for Stroke Recovery, Neuroscience Research Program, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, USA.
authors.forename: Neelesh K
authors.initials: NK
authors.lastname: Nadkarni
authors.forename: Karl
authors.initials: K
authors.lastname: Zabjek
authors.forename: Betty
authors.initials: B
authors.lastname: Lee
authors.forename: William E
authors.initials: WE
authors.lastname: McIlroy
authors.forename: Sandra E
authors.initials: SE
authors.lastname: Black
mesh_terms: D000328:Adult; D000368:Aged; D000375:Aging / Q000502:physiology*; D001288:Attention; D056344:Executive Function; D005260:Female; D005684:Gait; D006801:Humans; D008297:Male; D008570:Memory, Short-Term; D013028:Space Perception