Does 8-Foot Walk Time Predict Cognitive Decline in Older Mexicans Americans?
Article first published online: 8 JAN 2007
Journal of the American Geriatrics Society
Volume 55, Issue 2, pages 245–251, February 2007
How to Cite
Alfaro-Acha, A., Al Snih, S., Raji, M. A., Markides, K. S. and Ottenbacher, K. J. (2007), Does 8-Foot Walk Time Predict Cognitive Decline in Older Mexicans Americans?. Journal of the American Geriatrics Society, 55: 245–251. doi: 10.1111/j.1532-5415.2007.01039.x
- Issue published online: 8 JAN 2007
- Article first published online: 8 JAN 2007
- cognitive decline;
- 8-foot walk time;
- Mexican American
OBJECTIVES: To examine the association between 8-foot time walk and change in cognitive function over time in older Mexican Americans.
DESIGN: Data used are from the Hispanic Established Population for the Epidemiological Study of the Elderly (1993–2001).
SETTING: Five southwestern states: Texas, New Mexico, Colorado, Arizona, and California.
PARTICIPANTS: Two thousand seventy noninstitutionalized Mexican-American men and women aged 65 and older who had a Mini-Mental State Examination (MMSE) score of 21 or greater at baseline.
MEASUREMENTS: Sociodemographic factors (age, sex, education, marital status), MMSE score, 8-foot walk time, body mass index, medical conditions (stroke, heart attack, diabetes mellitus, depression, and hypertension), and near and distant visual impairment.
RESULTS: Using general linear mixed models, it was found that subjects with the slowest 8-foot walk time had a significantly greater rate of cognitive decline over 7 years than subjects with the fastest 8-foot walk time. There was a significant 8-foot walk time–by-time interaction with MMSE scores. Subjects in the lowest 8-foot walk time quartile had a greater cognitive decline over 7 years (estimate=−0.32, SE=0.08; P<.001) than those in the highest quartile. This association remained statistically significant after controlling for potential confounding factors.
CONCLUSION: Slow 8-foot walk time in older Mexican-American adults without cognitive impairment at baseline was an independent predictor of MMSE score decline over a 7-year period. Slow 8-foot walk time may be an early marker for older adults in a predementia state who may benefit from early-intervention programs to prevent or slow cognitive decline.