Segmental contribution to whole-body angular momentum during stepping in healthy young and old adults - LAAS - Laboratoire d'Analyse et d'Architecture des Systèmes Access content directly
Journal Articles Scientific Reports Year : 2021

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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Dates and versions

hal-03379975 , version 1 (15-10-2021)

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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, 2021, 11, pp.19969. ⟨10.1038/s41598-021-99519-y⟩. ⟨hal-03379975⟩
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