Experimental aging research · 2017
The Association Between Physical Performance and Executive Function in a Sample of Rural Older Adults from South Carolina, USA.
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Falck Ryan S, Wilcox Sara, Best John R, Chandler Jessica L, Liu-Ambrose Teresa
Аннотация
BACKGROUND: Mobility and executive functions (EFs) decline with age, although associations between mobility and EFs are less clear. This study examined relationships between different mobility measures and EFs among rural older adults.
METHODS: This cross-sectional study recruited 56 older adults (60+ years) in rural South Carolina. Mobility was assessed via gait speed, timed up-and-go, chair stand, and as a composite physical performance score (PPS). EFs was assessed via Trail Making Test, semantic fluency, and phonemic fluency. Bivariate analyses were performed and regressions were calculated controlling for appropriate covariates, with PPS as the independent variable and each EF test as the dependent variable.
RESULTS: Mean age was 74.22 years (SD = 8.02), 80.40% were female and 64.71% were white. Bivariate analysis revealed associations between gait speed and Trail Making Test (r = -.33; p = .03), between timed up-and-go and Trail Making Test (r = .34; p = .01), and between PPS and Trail Making Test (r = -.33; p = .03). The regression models indicated higher PPS was associated with better performance on Trail Making Test (β = -1.12; p < 0.01), phonemic fluency (β = 0.68; p = .01), and semantic fluency (β = 0.81; p = .02).
CONCLUSIONS: In a rural setting, mobility is associated with multiple EF processes. Higher mobility and physical ability are desired for maintaining EFs capability.
METHODS: This cross-sectional study recruited 56 older adults (60+ years) in rural South Carolina. Mobility was assessed via gait speed, timed up-and-go, chair stand, and as a composite physical performance score (PPS). EFs was assessed via Trail Making Test, semantic fluency, and phonemic fluency. Bivariate analyses were performed and regressions were calculated controlling for appropriate covariates, with PPS as the independent variable and each EF test as the dependent variable.
RESULTS: Mean age was 74.22 years (SD = 8.02), 80.40% were female and 64.71% were white. Bivariate analysis revealed associations between gait speed and Trail Making Test (r = -.33; p = .03), between timed up-and-go and Trail Making Test (r = .34; p = .01), and between PPS and Trail Making Test (r = -.33; p = .03). The regression models indicated higher PPS was associated with better performance on Trail Making Test (β = -1.12; p < 0.01), phonemic fluency (β = 0.68; p = .01), and semantic fluency (β = 0.81; p = .02).
CONCLUSIONS: In a rural setting, mobility is associated with multiple EF processes. Higher mobility and physical ability are desired for maintaining EFs capability.