Consciously processing balance leads to distorted perceptions of instability in older adults
dc.contributor.author | Ellmers, TJ | |
dc.contributor.author | Kal, EC | |
dc.contributor.author | Young, WR | |
dc.date.accessioned | 2020-10-19T07:53:14Z | |
dc.date.issued | 2020-11-03 | |
dc.description.abstract | Background: Persistent dizziness without a clear cause is common in older adults. We explored whether an anxiety-driven preoccupation with consciously processing balance may underpin the distorted perceptions of unsteadiness that characterises ‘unexplained’ dizziness in older adults. Methods: We experimentally induced anxiety about losing one’s balance (through a postural threat manipulation) in a cohort of asymptomatic older adults and evaluated associated changes in perceived stability, conscious movement processing and postural control. These outcomes were also assessed when performing a distracting cognitive task designed to prevent anxiety-related conscious movement processing, in addition to during baseline conditions (ground level). Results: Despite a lack of increase in postural sway amplitude (p = .316), participants reported reductions in perceived stability during postural threat compared to baseline (p < .001). A multiple linear regression revealed that anxiety-related conscious movement processing independently predicted perceptions of instability during this condition (p = .006). These changes were accompanied by alterations in postural control previously associated with functional dizziness, namely high-frequency postural sway and disrupted interaction between open- and closed-loop postural control (ps < .014). While the distraction task successfully reduced conscious processing (p = .012), leading to greater perceived stability (p = .010), further increases in both postural sway frequency (p = .002) and dominance of closed-loop control (p = .029) were observed. Conclusions: These findings implicate the role of conscious movement processing in the formation of distorted perceptions of unsteadiness, suggesting that such perceptions may be modifiable by reducing an over-reliance on conscious processes to regulate balance. | en_GB |
dc.identifier.citation | Published online 3 November 2020 | en_GB |
dc.identifier.doi | 10.1007/s00415-020-10288-6 | |
dc.identifier.uri | http://hdl.handle.net/10871/123290 | |
dc.language.iso | en | en_GB |
dc.publisher | Springer Verlag | en_GB |
dc.rights | © The Author(s) 2020. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. | |
dc.subject | Fear of falling | en_GB |
dc.subject | anxiety | en_GB |
dc.subject | dizziness | en_GB |
dc.subject | older adults | en_GB |
dc.subject | conscious movement processing | en_GB |
dc.subject | balance | en_GB |
dc.title | Consciously processing balance leads to distorted perceptions of instability in older adults | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2020-10-19T07:53:14Z | |
dc.identifier.issn | 0340-5354 | |
dc.description | This is the final version. Available on open access from Springer Verlag via the DOI in this record | en_GB |
dc.description | Availability of data and materials: All analysed data is available via an Open Science Framework repository (https://osf.io/nvrky/?view_only=bcd27ccfe99c47feaff215173a76d2fc). Code availability: Custom MATLAB codes available from the lead author following reasonable request. | en_GB |
dc.identifier.journal | Journal of Neurology | en_GB |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en_GB |
dcterms.dateAccepted | 2020-10-20 | |
rioxxterms.version | VoR | en_GB |
rioxxterms.licenseref.startdate | 2020-10-20 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2020-10-16T22:28:31Z | |
refterms.versionFCD | AM | |
refterms.dateFOA | 2020-11-04T13:05:38Z | |
refterms.panel | C | en_GB |
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Except where otherwise noted, this item's licence is described as © The Author(s) 2020. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.