Predicting balance impairments in older adults: a wavelet-based center of pressure classification approach

BioMedical Engineering OnLine

Research

Thomas Gustafsson¹  Hedyeh Jafari¹  Lars Nyberg²  Ulrik Röijezon² 

[1] Department of Computer Science, Electrical and Space Engineering, Luleå University of Technology, Luleå, Sweden;Department of Health, Education and Technology, Luleå University of Technology, Luleå, Sweden;

关键词: Balance;    Wavelet analysis;    Clustering;    Classification;    Sensorimotor;    Ageing;   

DOI  :  10.1186/s12938-023-01146-3

 received in 2023-05-15, accepted in 2023-08-08,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundAging is associated with a decline in postural control and an increased risk of falls. The Center of Pressure (CoP) trajectory analysis is a commonly used method to assess balance. In this study, we proposed a new method to identify balance impairments in older adults by analyzing their CoP trajectory frequency components, sensory inputs, reaction time, motor functions, and Fall-related Concerns (FrC).MethodsThe study includes 45 older adults aged 75.2(±4.5)\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$75.2 (\pm 4.5)$$\end{document} years who were assessed for sensory and motor functions. FrC and postural control in a quiet stance with open and closed eyes on stable and unstable surfaces. A Discrete Wavelet Transform (DWT) was used to detect features in frequency scales, followed by the K-means algorithm to detect different clusters. The multinomial logistic model was used to identify and predict the association of each group with the sensorimotor tests and FrC.ResultsThe study results showed that by DWT, three distinct groups of subjects could be revealed. Group 2 exhibited the broadest use of frequency scales, less decline in sensorimotor functions, and lowest FrC. The study also found that a decline in sensorimotor functions and fall-related concern may cause individuals to rely on either very low-frequency scales (group 1) or higher-frequency scales (group 3) and that those who use lower-frequency scales (group 1) can manage their balance more successfully than group 3.ConclusionsOur study provides a new, cost-effective method for detecting balance impairments in older adults. This method can be used to identify people at risk and develop interventions and rehabilitation strategies to prevent falls in this population.

【 授权许可】

CC BY   
© BioMed Central Ltd., part of Springer Nature 2023

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