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- Title
Dual-task Performance in Young and Older Adults: Speed-Accuracy Tradeoffs in Choice Responding While Treadmill Walking.
- Authors
Tomporowski, Phillip D.; Audiffren, Michel
- Abstract
Thirty-one young (mean age = 20.8 years) and 30 older (mean age = 71.5 years) men and women categorized as physically active (n = 30) or inactive (n = 31) performed an executive processing task while standing, treadmill walking at a preferred pace, and treadmill walking at a faster pace. Dual-task interference was predicted to negatively impact older adults' cognitive flexibility as measured by an auditory switch task more than younger adults; further, participants' level of physical activity was predicted to mitigate the relation. For older adults, treadmill walking was accompanied by significantly more rapid response times and reductions in local- and mixed-switch costs. A speed-accuracy tradeoff was observed in which response errors increased linearly as walking speed increased, suggesting that locomotion under dual-task conditions degrades the quality of older adults' cognitive flexibility. Participants' level of physical activity did not influence cognitive test performance.
- Subjects
ANALYSIS of variance; COGNITION; PROBABILITY theory; PSYCHOLOGICAL tests; REACTION time; RESEARCH funding; WALKING; TASK performance; REPEATED measures design
- Publication
Journal of Aging & Physical Activity, 2014, Vol 22, Issue 4, p557
- ISSN
1063-8652
- Publication type
Article
- DOI
10.1123/JAPA.2012-0241