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Segmental contribution to whole-body angular momentum during stepping in healthy young and old adults

Abstract : Recent evidence suggests that during volitional stepping older adults control whole-body angular momentum (H) less effectively than younger adults, which may impose a greater challenge for balance control during this task in the elderly. This study investigated the influence of aging on the segment angular momenta and their contributions to H during stepping. Eighteen old and 15 young healthy adults were instructed to perform a series of stepping at two speed conditions: preferred and as fast as possible. Full-body kinematics were recorded to compute angular momenta of the trunk, arms and legs and their contributions to total absolute H on the entire stepping movement. Results indicated that older adults exhibited larger angular momenta of the trunk and legs in the sagittal plane, which contributed to a higher sagittal plane H range during stepping compared to young adults. Results also revealed that older adults had a greater trunk contribution and lower leg contribution to total absolute H in the sagittal plane compared to young adults, even though there was no difference in the other two planes. These results stress that age-related changes in H control during stepping arise as a result of changes in trunk and leg rotational dynamics.
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https://hal.laas.fr/hal-03379975
Contributor : Bruno Watier Connect in order to contact the contributor
Submitted on : Friday, October 15, 2021 - 12:03:53 PM
Last modification on : Monday, July 4, 2022 - 8:43:07 AM
Long-term archiving on: : Sunday, January 16, 2022 - 7:39:02 PM

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Jérémie Begue, Nicolas Peyrot, Angélique Lesport, Nicolas A Turpin, Bruno Watier, et al.. Segmental contribution to whole-body angular momentum during stepping in healthy young and old adults. Scientific Reports, Nature Publishing Group, 2021, 11, pp.19969. ⟨10.1038/s41598-021-99519-y⟩. ⟨hal-03379975⟩

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