Erschienen in:

13.04.2024 | Research Article

Influence of visual feedback and cognitive challenge on the age-related changes in force steadiness

verfasst von: Hugo M. Pereira, Kevin G. Keenan, Sandra K. Hunter

Erschienen in: Experimental Brain Research | Ausgabe 6/2024

Abstract

Force steadiness can be influenced by visual feedback as well as presence of a cognitive tasks and potentially differs with age and sex. This study determined the impact of altered visual feedback on force steadiness in the presence of a difficult cognitive challenge in young and older men and women. Forty-nine young (19–30 yr; 25 women, 24 men) and 25 older (60–85 yr; 15 women; 10 men) performed low force (5% of maximum) static contractions with the elbow flexor muscles in the presence and absence of a cognitive challenge (counting backwards by 13) either with low or high visual feedback gain. The cognitive challenge reduced force steadiness (increased force fluctuation amplitude) particularly in women (cognitive challenge × sex: P < 0.05) and older individuals (cognitive challenge × age: P < 0.05). Force steadiness improved with high-gain visual feedback compared with low-gain visual feedback (P < 0.01) for all groups (all interactions: P > 0.05). Manipulation of visual feedback had no influence on the reduced force steadiness in presence of the cognitive challenge for all groups (all P > 0.05). These findings indicate that older individuals and women have greater risk of impaired motor performance of the upper extremity if steadiness is required during a low-force static contraction. Manipulation of visual feedback had minimal effects on the reduced force steadiness in presence of a difficult cognitive challenge.

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Titel: Influence of visual feedback and cognitive challenge on the age-related changes in force steadiness
verfasst von: Hugo M. Pereira
Kevin G. Keenan
Sandra K. Hunter
Publikationsdatum: 13.04.2024
Verlag: Springer Berlin Heidelberg
Erschienen in: Experimental Brain Research / Ausgabe 6/2024
Print ISSN: 0014-4819
Elektronische ISSN: 1432-1106
DOI: https://doi.org/10.1007/s00221-024-06831-w

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Influence of visual feedback and cognitive challenge on the age-related changes in force steadiness

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