Journal
JOURNALS OF GERONTOLOGY SERIES B-PSYCHOLOGICAL SCIENCES AND SOCIAL SCIENCES
Volume 65, Issue 3, Pages 306-316Publisher
OXFORD UNIV PRESS INC
DOI: 10.1093/geronb/gbq003
Keywords
Driving; Life space; Mild cognitive impairment; Mobility; Older adults
Funding
- National Institute on Aging and the National Institute of Nursing Research to Hebrew Senior Life [U01 NR04507]
- Indiana University School of Medicine [U01 NR04508]
- Johns Hopkins University [U01AG14260]
- New England Research Institutes [U01 AG14282]
- Pennsylvania State University [U01 AG14263]
- University of Alabama at Birmingham [U01 AG14289]
- University of Florida [U01AG14276]
- National Institute on Aging [5 R03 AG23078-02]
- Posit Science
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Studies have found that adults with possible mild cognitive impairment (MCI) exhibit decrements in everyday functioning (e.g., Wadley, V. G., Crowe, M., Marsiske, M., Cook, S. E., Unverzagt, F. W., Rosenberg, A. L., et al. (2007). Changes in everyday function among individuals with psychometrically defined mild cognitive impairment. Journal of the American Geriatrics Society, 55, 1192-1198). However, it is not known whether driving mobility and life space mobility are reduced in such individuals. The current study examined 5-year trajectories of mobility change in older adults (N = 2,355) with psychometrically defined MCI from the Advanced Cognitive Training for Independent and Vital Elderly trial. Mixed effect models evaluated group differences for the following mobility outcomes: driving space, life space, driving frequency, and driving difficulty. Relative to cognitively normal participants, participants with possible MCI showed reduced baseline mobility for all outcomes as well as faster rates of decline for driving frequency and difficulty. These results suggest that mobility declines could be features of MCI, and changes in mobility may be particularly important for researchers and clinicians to monitor in this population.
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