Day-to-Day Variability of Postural Sway and Its Association With Cognitive Function in Older Adults: A Pilot Study

Frontiers in Aging Neuroscience
Julia M LeachFay B Horak

Abstract

Introduction: Increased variability in motor function has been observed during the initial stages of cognitive decline. However, the natural variability of postural control, as well as its association with cognitive status and decline, remains unknown. The objective of this pilot study was to characterize the day-to-day variability in postural sway in non-demented older adults. We hypothesized that older adults with a lower cognitive status would have higher day-to-day variability in postural sway. Materials and Methods: A Nintendo Wii balance board (WBB) was used to quantify postural sway in the home twice daily for 30 days in 20 non-demented, community-dwelling older adults: once under a single-task condition and once under a dual-task condition (using a daily word search task administered via a Nook tablet). Mean sway distance, velocity, area, centroidal frequency and frequency dispersion were derived from the center of pressure data acquired from the WBB. Results: Linear relationships were observed between the day-to-day variability in postural sway and cognitive status (indexed by cognitive global z-scores). More variability in time-domain postural sway (sway distance and area) and less variability in frequency-domain post...Continue Reading

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Citations

May 28, 2020·Journal of Clinical Medicine·Rula AbdallatMohammad Al-Amri
Aug 14, 2020·Journal of Aging and Physical Activity·Luca PetrignaAntonino Bianco
Oct 17, 2020·Frontiers in Psychiatry·Andrew P OwensDag Aarsland
Jan 17, 2022·Experimental Brain Research·Abubakar Tijjani SalihuShapour Jaberzadeh

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