The objective of this longitudinal study was to examine time-varying correlations between multiple indexes of physical function and driving mobility in older adults across 5 years. The participants were older drivers aged 65 to 91 ( M = 73.6 ± 5.78) who were randomly assigned to the no-contact control arm of the Advanced Cognitive Training for Independent and Vital Elderly Study ( N = 598). The driving mobility outcomes were self-reported driving space, driving exposure, driving frequency, and weekly mileage assessed at baseline and first, second, third, and fifth follow-up visits. Physical functioning measures included grip strength, the turn 360 test, and self-reported physical function. Multilevel models examined relationships between changes in physical functioning and driving mobility outcomes over 5 years. The results indicated that driving space and driving frequency decreased over time, especially for older individuals. Changes in physical function were positively related to changes in driving mobility after controlling for demographics, attrition, baseline cognitive function and visual acuity, and changes in general health. Patterns of associations varied depending on the specific physical function measure and mobility outcome. The findings highlight the time-varying nature of the relationships between physical functioning and driving mobility. Further research is needed to understand fully the dynamic associations between driving mobility and key components of mobility that vary over time.


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    Title :

    Longitudinal Associations Between Changes in Physical Function and Driving Mobility Behaviors of Older Adults


    Additional title:

    Transportation Research Record: Journal of the Transportation Research Board


    Contributors:


    Publication date :

    2016-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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