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The Rim and the Ancient Mariner: The Nautical Horizon Affects Postural Sway in Older Adults
On land, the spatial magnitude of postural sway (i.e., the amount of sway) tends to be greater when participants look at the horizon than when they look at nearby targets. By contrast, on ships at sea, the spatial magnitude of postural sway in young adults has been greater when looking at nearby tar...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5156431/ https://www.ncbi.nlm.nih.gov/pubmed/27973576 http://dx.doi.org/10.1371/journal.pone.0166900 |
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author | Munafo, Justin Wade, Michael G. Stergiou, Nick Stoffregen, Thomas A. |
author_facet | Munafo, Justin Wade, Michael G. Stergiou, Nick Stoffregen, Thomas A. |
author_sort | Munafo, Justin |
collection | PubMed |
description | On land, the spatial magnitude of postural sway (i.e., the amount of sway) tends to be greater when participants look at the horizon than when they look at nearby targets. By contrast, on ships at sea, the spatial magnitude of postural sway in young adults has been greater when looking at nearby targets and less when looking at the horizon. Healthy aging is associated with changes in the movement patterns of the standing body sway, and these changes typically are interpreted in terms of age-related declines in the ability to control posture. To further elucidate the mechanisms associated with these changes we investigated control of posture in a setting that poses substantial postural challenges; standing on a ship at sea. In particular, we explored postural sway on a ship at sea when older adults looked at the horizon or at nearby targets. We evaluated the kinematics of the center of pressure in terms of spatial magnitude (i.e., the amount of sway) and multifractality (a measure of temporal dynamics). We found that looking at the horizon significantly affected the multifractality of standing body, but did not systematically influence the spatial magnitude of sway. We discuss the results in terms of age-related changes in the perception and control of dynamic body orientation. |
format | Online Article Text |
id | pubmed-5156431 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-51564312016-12-28 The Rim and the Ancient Mariner: The Nautical Horizon Affects Postural Sway in Older Adults Munafo, Justin Wade, Michael G. Stergiou, Nick Stoffregen, Thomas A. PLoS One Research Article On land, the spatial magnitude of postural sway (i.e., the amount of sway) tends to be greater when participants look at the horizon than when they look at nearby targets. By contrast, on ships at sea, the spatial magnitude of postural sway in young adults has been greater when looking at nearby targets and less when looking at the horizon. Healthy aging is associated with changes in the movement patterns of the standing body sway, and these changes typically are interpreted in terms of age-related declines in the ability to control posture. To further elucidate the mechanisms associated with these changes we investigated control of posture in a setting that poses substantial postural challenges; standing on a ship at sea. In particular, we explored postural sway on a ship at sea when older adults looked at the horizon or at nearby targets. We evaluated the kinematics of the center of pressure in terms of spatial magnitude (i.e., the amount of sway) and multifractality (a measure of temporal dynamics). We found that looking at the horizon significantly affected the multifractality of standing body, but did not systematically influence the spatial magnitude of sway. We discuss the results in terms of age-related changes in the perception and control of dynamic body orientation. Public Library of Science 2016-12-14 /pmc/articles/PMC5156431/ /pubmed/27973576 http://dx.doi.org/10.1371/journal.pone.0166900 Text en © 2016 Munafo et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Munafo, Justin Wade, Michael G. Stergiou, Nick Stoffregen, Thomas A. The Rim and the Ancient Mariner: The Nautical Horizon Affects Postural Sway in Older Adults |
title | The Rim and the Ancient Mariner: The Nautical Horizon Affects Postural Sway in Older Adults |
title_full | The Rim and the Ancient Mariner: The Nautical Horizon Affects Postural Sway in Older Adults |
title_fullStr | The Rim and the Ancient Mariner: The Nautical Horizon Affects Postural Sway in Older Adults |
title_full_unstemmed | The Rim and the Ancient Mariner: The Nautical Horizon Affects Postural Sway in Older Adults |
title_short | The Rim and the Ancient Mariner: The Nautical Horizon Affects Postural Sway in Older Adults |
title_sort | rim and the ancient mariner: the nautical horizon affects postural sway in older adults |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5156431/ https://www.ncbi.nlm.nih.gov/pubmed/27973576 http://dx.doi.org/10.1371/journal.pone.0166900 |
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