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Differences in gait stability and acceleration characteristics between healthy young and older females

View ORCID ProfileYuge Zhang, View ORCID ProfileXinglong Zhou, View ORCID ProfileMirjam Pijnappels, View ORCID ProfileSjoerd M. Bruijn
doi: https://doi.org/10.1101/2021.02.24.432667
Yuge Zhang
1Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
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Xinglong Zhou
2Department of Sports Human Science, Beijing Sport University, Beijing, PR China
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Mirjam Pijnappels
1Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
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Sjoerd M. Bruijn
1Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
2Department of Sports Human Science, Beijing Sport University, Beijing, PR China
4Biomechanics Laboratory, Fujian Medical University, Quanzhou, Fujian, PR China
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  • For correspondence: s.m.bruijn@gmail.com
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Abstract

Our aim was to evaluate differences in gait acceleration intensity, variability and stability of feet and trunk between older females and young females using inertial sensors. Twenty older females (OF; mean age 68.4, SD 4.1 years) and eighteen young females (YF; mean age 22.3, SD 1.7 years) were asked to walk straight for 100 meters at their preferred speed, while wearing inertial sensors on heels and lower back. We calculated spatiotemporal measures, foot and trunk acceleration characteristics and their variability, as well as trunk stability using the local divergence exponent (LDE). Two-way analysis of variance, Student’s t-test, and Mann–Whitney test were used to compare statistical difference of measures between groups. Cohen’s d effects were calculated for each variable. Foot maximum vertical acceleration and amplitude, trunk-foot vertical acceleration attenuation, as well as their variability were significantly smaller in OF than in YF. In contrast, trunk mediolateral acceleration amplitude, maximum vertical acceleration, and amplitude, as well as their variability were significantly larger in OF than in YF. Moreover, OF showed lower stability (i.e., higher LDE values) in ML acceleration, ML and VT angular velocity of the trunk. Even though we measured healthy older females, these participants showed lower vertical foot accelerations with higher vertical trunk acceleration, lower trunk-foot vertical acceleration attenuation, less gait stability, and more variability of the trunk, and hence, were more likely to fall. Moreover, the acceleration of trunk was sensitive to age effects, both in variability and stability.

Competing Interest Statement

The authors have declared no competing interest.

Footnotes

  • This version adds the calculation of the effect size, the revision of the discussion and the revision of the text

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY 4.0 International license.
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Posted August 23, 2021.
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Differences in gait stability and acceleration characteristics between healthy young and older females
Yuge Zhang, Xinglong Zhou, Mirjam Pijnappels, Sjoerd M. Bruijn
bioRxiv 2021.02.24.432667; doi: https://doi.org/10.1101/2021.02.24.432667
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Differences in gait stability and acceleration characteristics between healthy young and older females
Yuge Zhang, Xinglong Zhou, Mirjam Pijnappels, Sjoerd M. Bruijn
bioRxiv 2021.02.24.432667; doi: https://doi.org/10.1101/2021.02.24.432667

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