Quantification of dynamic walking stability of elderly by using nonlinear time-series analysis and simple accelerometry

Y. Ohtaki; M. Arif; A. Suzuki; K. Fujita; R. Nagatomi; H. Inooka

doi:10.1016/B978-008044963-0/50004-7

Quantification of dynamic walking stability of elderly by using nonlinear time-series analysis and simple accelerometry

Y. Ohtaki, M. Arif, A. Suzuki, K. Fujita, R. Nagatomi, H. Inooka

MEN - Biomedical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

1 Citation (Scopus)

Abstract

This chapter presents a technique for assessing dynamic walking stability utilizing a nonlinear time-series analysis and a portable instrument. Main objective is to investigate its usefulness in the assessment of elderly walking. The method consists of a measurement of three-dimensional acceleration of the upper body and an estimation of the Lyapunov exponents, thereby directly quantifying local dynamic stability while walking. The proposed method demonstrates the effects and efficacies of the interventions for the elderly. The experimental results suggested that the method was useful in revealing the degree of improvements on the walking stability. The chapter also investigates the straight level walking of young and elderly subjects.

Original language	English
Title of host publication	Mechatronics for Safety, Security and Dependability in a New Era
Publisher	Elsevier Ltd.
Pages	13-18
Number of pages	6
ISBN (Print)	9780080449630
DOIs	https://doi.org/10.1016/B978-008044963-0/50004-7
Publication status	Published - 2007

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10.1016/B978-008044963-0/50004-7

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title = "Quantification of dynamic walking stability of elderly by using nonlinear time-series analysis and simple accelerometry",

abstract = "This chapter presents a technique for assessing dynamic walking stability utilizing a nonlinear time-series analysis and a portable instrument. Main objective is to investigate its usefulness in the assessment of elderly walking. The method consists of a measurement of three-dimensional acceleration of the upper body and an estimation of the Lyapunov exponents, thereby directly quantifying local dynamic stability while walking. The proposed method demonstrates the effects and efficacies of the interventions for the elderly. The experimental results suggested that the method was useful in revealing the degree of improvements on the walking stability. The chapter also investigates the straight level walking of young and elderly subjects.",

author = "Y. Ohtaki and M. Arif and A. Suzuki and K. Fujita and R. Nagatomi and H. Inooka",

note = "Funding Information: We are grateful to Dr. I. Tsuji at Graduate School of Medicine, Tohoku University, Sendail Silver Center, and Miyagi Physical Therapist Association for their cooperation in our study. This research is grant aided by Japanese Ministry of Education, Culture, Sports, Science and Technology.",

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T1 - Quantification of dynamic walking stability of elderly by using nonlinear time-series analysis and simple accelerometry

AU - Ohtaki, Y.

AU - Arif, M.

AU - Suzuki, A.

AU - Fujita, K.

AU - Nagatomi, R.

AU - Inooka, H.

N1 - Funding Information: We are grateful to Dr. I. Tsuji at Graduate School of Medicine, Tohoku University, Sendail Silver Center, and Miyagi Physical Therapist Association for their cooperation in our study. This research is grant aided by Japanese Ministry of Education, Culture, Sports, Science and Technology.

PY - 2007

Y1 - 2007

N2 - This chapter presents a technique for assessing dynamic walking stability utilizing a nonlinear time-series analysis and a portable instrument. Main objective is to investigate its usefulness in the assessment of elderly walking. The method consists of a measurement of three-dimensional acceleration of the upper body and an estimation of the Lyapunov exponents, thereby directly quantifying local dynamic stability while walking. The proposed method demonstrates the effects and efficacies of the interventions for the elderly. The experimental results suggested that the method was useful in revealing the degree of improvements on the walking stability. The chapter also investigates the straight level walking of young and elderly subjects.

AB - This chapter presents a technique for assessing dynamic walking stability utilizing a nonlinear time-series analysis and a portable instrument. Main objective is to investigate its usefulness in the assessment of elderly walking. The method consists of a measurement of three-dimensional acceleration of the upper body and an estimation of the Lyapunov exponents, thereby directly quantifying local dynamic stability while walking. The proposed method demonstrates the effects and efficacies of the interventions for the elderly. The experimental results suggested that the method was useful in revealing the degree of improvements on the walking stability. The chapter also investigates the straight level walking of young and elderly subjects.

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BT - Mechatronics for Safety, Security and Dependability in a New Era

PB - Elsevier Ltd.

ER -

Quantification of dynamic walking stability of elderly by using nonlinear time-series analysis and simple accelerometry

Abstract

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