| Autor: |
Smail EJ; Department of Health Outcomes and Biomedical Informatics, University of Florida School of Medicine, Gainesville, FL, USA., Rebok GW; Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.; Johns Hopkins Center on Aging and Health. Johns Hopkins University, Baltimore, MD, USA., Gross AL; Johns Hopkins Center on Aging and Health. Johns Hopkins University, Baltimore, MD, USA.; Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA., Clay OJ; Department of Psychology, University of Alabama at Birmingham, Birmingham, AL, USA., Ball K; Department of Psychology, University of Alabama at Birmingham, Birmingham, AL, USA., Crowe M; Department of Psychology, University of Alabama at Birmingham, Birmingham, AL, USA., Kaufmann CN; Department of Health Outcomes and Biomedical Informatics, University of Florida School of Medicine, Gainesville, FL, USA., Manini T; Department of Health Outcomes and Biomedical Informatics, University of Florida School of Medicine, Gainesville, FL, USA., Parisi JM; Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA. |
| Abstrakt: |
We tested the longitudinal associations between life space mobility (LSM) at baseline and cognitive performance in three domains (memory, reasoning, and speed of processing) over time. Our analytic sample includes 2,690 older adults (mean age = 73.0, 75.9% female) participating in the ACTIVE Study. We used multiple linear mixed-effects models to evaluate whether LSM, measured using the Life Space Questionnaire, at baseline was longitudinally associated with scores on eight cognitive tests and three composite scores across 10 years. In unadjusted models, there were significant main effects of baseline LSM on memory and reasoning domains, and one speed of processing test (beta: 0.019 to 0.055, p < 0.05). All effects were non-significant in adjusted models. Over time, baseline LSM was associated with one memory test score in adjusted models. Greater LSM at baseline is associated with marginally higher cognitive performance but does not appear to affect the rate of cognitive change at a clinically significant level. |
