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Upper body accelerations during planned gait termination in young and older women

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Author
Rum, Lorenzo
Laudani, Luca
Macaluso, Andrea
Vannozzi, Giuseppe
Date
2017-10-25
Acceptance date
2017-10-15
Type
Article
Publisher
Elsevier
ISSN
1873-2380
Metadata
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Abstract
Transitory tasks, such as gait termination, involve interactions between neural and biomechanical factors that challenge postural stability and head stabilization patterns in older adults. The aim of the study was to compare upper body patterns of acceleration during planned gait termination at different speeds between young and older women. Ten young and 10 older women were asked to carry out three gait termination trials at slow, comfortable and fast speed. A stereophotogrammetric system and a 15-body segments model were used to calculate antero-posterior whole-body Center of Mass (AP CoM) speed and to reconstruct the centroids of head, trunk and pelvis segments. RMS of three-dimensional linear accelerations were calculated for each segment and the transmission of acceleration between two segments was expressed as a percentage difference. Older women reported lower AP CoM speed and acceleration RMS of the three upper body segments than young women across the three speed conditions. A lower pelvis-to-trunk attenuation of accelerations in the transverse plane was observed in older compared to young women, and mainly in the medio-lateral direction. As possible explanations, older women may not need to reduce acceleration as young women because of their lower progression speed and the subsequent acceleration at upper body levels. On the other hand, older women may prioritize a decrease in the whole body progression speed at expense of the involvement of upper body segments. This limits the attenuation of the accelerations, particularly in the transverse plane, implying an increased dynamic unbalance in performing this transitory task.
Journal/conference proceeding
Journal of Biomechanics;
Citation
Rum, L., Laudani, L., Macaluso, A and Vannozzi, G. (2017) 'Upper body accelerations during planned gait termination in young and older women' Journal of Biomechanics, 65(8), pp.138-144
URI
http://hdl.handle.net/10369/9042
DOI
https://doi.org/10.1016/j.jbiomech.2017.10.019
Description
This article was published in Journal of Biomechanics on 25 October 2017, available at https://doi.org/10.1016/j.jbiomech.2017.10.019
Rights
https://creativecommons.org/licenses/by-nc-nd/4.0/
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