Comparison of gait symmetry between poststroke fallers and nonfallers during level walking using triaxial accelerometry

A STROBE-compliant cross-sectional study

Wei-Chih Lien, Yung Heng Cheng, Da-Shen Kuan, Yu Lun Zheng, Chao Hsien Hsieh, Wen Fong Wang

Research output: Contribution to journalArticle

Abstract

To compare the degree of gait symmetry of chronic poststroke fallers with that of nonfallers during level walking using triaxial accelerometry. In this cross-sectional study, a total of 14 patients with chronic stroke were recruited from a community hospital from February 2015 to July 2016. Patient characteristics, including the number of falls in the previous 12 months, were obtained from medical records. The Berg Balance Scale (BBS) and timed up and go (TUG) test were used at the onset of the study. Triaxial accelerometers were attached to the back and bilateral lower extremities of each subject with sampling rates of 120 Hz. The cross-correlation between the acceleration signals of the affected and unaffected feet was measured to assess the degree of gait symmetry. The triaxial acceleration signals of the 5 consecutive and bilateral strides from the middle of each trial were processed to measure the cross-correlation and time delay (T s) between the magnitude of the acceleration vector of the affected and unaffected foot. After controlling for possible confounding factors, the mixed-effect models showed that cross-correlation was significantly higher among nonfallers than fallers (β = -0.093; standard error [SE] = 0.029; P-value = 0.002), and that the T s was significantly longer among fallers than nonfallers (β = -1.900; SE = 0.719; P-value = 0.011). Cross-correlation and T s between the affected and unaffected lower extremities may be useful indicators to distinguish poststroke fallers from nonfallers.

Original languageEnglish
Article numbere5990
JournalMedicine (United States)
Volume96
Issue number9
DOIs
Publication statusPublished - 2017 Mar 1

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Accelerometry
Gait
Walking
Cross-Sectional Studies
Foot
Lower Extremity
Community Hospital
Medical Records
Stroke

All Science Journal Classification (ASJC) codes

  • Medicine(all)

Cite this

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title = "Comparison of gait symmetry between poststroke fallers and nonfallers during level walking using triaxial accelerometry: A STROBE-compliant cross-sectional study",
abstract = "To compare the degree of gait symmetry of chronic poststroke fallers with that of nonfallers during level walking using triaxial accelerometry. In this cross-sectional study, a total of 14 patients with chronic stroke were recruited from a community hospital from February 2015 to July 2016. Patient characteristics, including the number of falls in the previous 12 months, were obtained from medical records. The Berg Balance Scale (BBS) and timed up and go (TUG) test were used at the onset of the study. Triaxial accelerometers were attached to the back and bilateral lower extremities of each subject with sampling rates of 120 Hz. The cross-correlation between the acceleration signals of the affected and unaffected feet was measured to assess the degree of gait symmetry. The triaxial acceleration signals of the 5 consecutive and bilateral strides from the middle of each trial were processed to measure the cross-correlation and time delay (T s) between the magnitude of the acceleration vector of the affected and unaffected foot. After controlling for possible confounding factors, the mixed-effect models showed that cross-correlation was significantly higher among nonfallers than fallers (β = -0.093; standard error [SE] = 0.029; P-value = 0.002), and that the T s was significantly longer among fallers than nonfallers (β = -1.900; SE = 0.719; P-value = 0.011). Cross-correlation and T s between the affected and unaffected lower extremities may be useful indicators to distinguish poststroke fallers from nonfallers.",
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Comparison of gait symmetry between poststroke fallers and nonfallers during level walking using triaxial accelerometry : A STROBE-compliant cross-sectional study. / Lien, Wei-Chih; Cheng, Yung Heng; Kuan, Da-Shen; Zheng, Yu Lun; Hsieh, Chao Hsien; Wang, Wen Fong.

In: Medicine (United States), Vol. 96, No. 9, e5990, 01.03.2017.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Comparison of gait symmetry between poststroke fallers and nonfallers during level walking using triaxial accelerometry

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AU - Lien, Wei-Chih

AU - Cheng, Yung Heng

AU - Kuan, Da-Shen

AU - Zheng, Yu Lun

AU - Hsieh, Chao Hsien

AU - Wang, Wen Fong

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