Annual International Conference of the IEEE Engineering in Medicine and Biology Society IEEE Engineering in Medicine and Biology Society Annual International Conference · Jul 2024

Interactions between sleep-wake cycle on balance control of elderly people

By Nogueira MG, Umemura GS, Forner-Cordero A et al.

Analysis of sleep-wake cycle in elderly people plays an important role in the quality of life of this population. The goal of this study is to analyze circadian rhythm of elderly people with actigraphy, subjective questionnaires and their relationship with balance control evaluated by center of pressure (COP) variables. The sleep-wake cycle of nine elderly subjects were evaluated using a wearable actigraph for 14 days. Questionnaires which evaluates chronotype, sleep quality and daytime sleepiness were administered and their balance control during quiet standing position was assessed by portable force platform. Measures of active phase amplitude (M10), rest amplitude (L5) total sleep time (TST) and time in bed (TIB) from actigraphy data and questionnaires results were correlated with COP variables. The actigraphy parameter that shows larger nocturnal activities (L5) showed positive correlations with larger COP excursions, whereas variability of M10, which can be interpreted as smaller routines of daily activities, showed negative correlations. Besides, TST and TIB showed positive correlations with COP variables.

doi.org/10.1109/embc53108.2024.10782361PubMed 40039360Populations