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- W2659983911 abstract "Background Mobility, ability to move independently, is central to older adults’ quality of life, especially those living in car-dependent communities. Declining communities in the US have accelerated aging demographics. Understanding older adults’ mobility, driving confidence, and physical performance is key to better inform transportation and age-friendly policies. Methods We recruited a convenience sample from February to August in 2016 in the Greater Buffalo region, NY. Participants were asked to wear a GPS unit and an accelerometer and to record activity log up to 8 days. Trained interviewers visited participants’ home to ask demographic information and to assess Activities of Daily Living and / Instrumental Activities of Daily Living Administration (ADL/IADL), Short Physical Performance Battery (SPPB), Life Space Assessment (LSA), and driving capabilities. We generated activity spaces using GPS data with 95% minimum convex polygons. Daily minutes in moderate or vigorous physical activities (MVPA) were defined as durations of accelerometer sequences with 3-d vector magnitude over 1,952 counts per minute. Pearson’s correlation tests between activity space size and mobility capability measures and MVPA minutes were conducted. Results Valid data came from a total of 31 participants’ 227 person-days. The sample was with an average age of 76.5 and consisted of 29 White, 28 females, and 29 retired. The sample had the activity space size mean of 119,512.3 ha and the mean daily MVPA 50.7 min. Most participants (27 out of 31) showed the highest level of driving confidence. Activity space size was not significantly correlated with self-report and objectively assessed physical performance (ADL/IADL and SPPB) and objectively measured MVPA min. GPS-determined activity space size was not correlated with self-report life space measures (LSA). It is noteworthy that LSA was correlated with ADL/IADL (rho=-0.53) and SPPB (rho=0.42) at a significant level of p Conclusions Objectively measured, GPS-determined activity space was not influenced by levels of physical activity capabilities and amount among an older adult sample who reported high driving confidence. However, perceived activity space measured by LSA was influenced. Actual activity space may be determined by driving capabilities although perceived activity space associated with physical activity performance." @default.
- W2659983911 created "2017-06-30" @default.
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- W2659983911 date "2017-06-01" @default.
- W2659983911 modified "2023-09-27" @default.
- W2659983911 title "Activity Space, Mobility, and Physical Performance of Older Adults" @default.
- W2659983911 doi "https://doi.org/10.1016/j.jth.2017.05.325" @default.
- W2659983911 hasPublicationYear "2017" @default.
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