title: Age-related differences in working memory and force control under dual-task conditions.
abstract: The aim of this study was to investigate the relationship between force control and cognitive performance under dual-task conditions in younger (18-22 years) and older adults (65-77 years). Cognitive (n-back test) and motor performance (force-tracking) was measured independently and simultaneously. Results indicated overall age-related differences for the n-back and the force-tracking task. Age-related differences increased during dual-task conditions. While younger adults exhibited no decrease in cognitive or motor performance during dual-task conditions, older adults showed a decrease in motor and cognitive performance. Additionally, when older adults made an error in the cognitive task they tended to show greater variability in the force-tracking task. These results suggest that cognitive motor deficits are responsible for older adults' performance decrements under dual-task conditions.
authors.affiliation: Jacobs Center for Lifelong Learning and Institutional Development, International University Bremen, Germany. c.voelcker-rehage@iu-bremen.de
authors.forename: Claudia
authors.initials: C
authors.lastname: Voelcker-Rehage
authors.forename: Aideen J
authors.initials: AJ
authors.lastname: Stronge
authors.forename: Jay L
authors.initials: JL
authors.lastname: Alberts
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging / Q000502:physiology*; D000704:Analysis of Variance; D003071:Cognition / Q000502:physiology*; D005260:Female; D018737:Hand Strength / Q000502:physiology*; D006801:Humans; D008297:Male; D008570:Memory, Short-Term / Q000502:physiology*; D009483:Neuropsychological Tests; D011597:Psychomotor Performance / Q000502:physiology; D011930:Reaction Time / Q000502:physiology; D013647:Task Performance and Analysis; D014705:Verbal Behavior / Q000502:physiology