The Multivariate Largest Lyapunov Exponent as an Age-Related Metric of Quiet Standing Balance
Joint Authors
Liu, Kun
Wang, Hongrui
Xiao, Jinzhuang
Source
Computational and Mathematical Methods in Medicine
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-05-12
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
The largest Lyapunov exponent has been researched as a metric of the balance ability during human quiet standing.
However, the sensitivity and accuracy of this measurement method are not good enough for clinical use.
The present research proposes a metric of the human body’s standing balance ability based on the multivariate largest Lyapunov exponent which can quantify the human standing balance.
The dynamic multivariate time series of ankle, knee, and hip were measured by multiple electrical goniometers.
Thirty-six normal people of different ages participated in the test.
With acquired data, the multivariate largest Lyapunov exponent was calculated.
Finally, the results of the proposed approach were analysed and compared with the traditional method, for which the largest Lyapunov exponent and power spectral density from the centre of pressure were also calculated.
The following conclusions can be obtained.
The multivariate largest Lyapunov exponent has a higher degree of differentiation in differentiating balance in eyes-closed conditions.
The MLLE value reflects the overall coordination between multisegment movements.
Individuals of different ages can be distinguished by their MLLE values.
The standing stability of human is reduced with the increment of age.
American Psychological Association (APA)
Liu, Kun& Wang, Hongrui& Xiao, Jinzhuang. 2015. The Multivariate Largest Lyapunov Exponent as an Age-Related Metric of Quiet Standing Balance. Computational and Mathematical Methods in Medicine،Vol. 2015, no. 2015, pp.1-11.
https://search.emarefa.net/detail/BIM-1057862
Modern Language Association (MLA)
Liu, Kun…[et al.]. The Multivariate Largest Lyapunov Exponent as an Age-Related Metric of Quiet Standing Balance. Computational and Mathematical Methods in Medicine No. 2015 (2015), pp.1-11.
https://search.emarefa.net/detail/BIM-1057862
American Medical Association (AMA)
Liu, Kun& Wang, Hongrui& Xiao, Jinzhuang. The Multivariate Largest Lyapunov Exponent as an Age-Related Metric of Quiet Standing Balance. Computational and Mathematical Methods in Medicine. 2015. Vol. 2015, no. 2015, pp.1-11.
https://search.emarefa.net/detail/BIM-1057862
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1057862