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...
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doaj-9bd65871ac7443edb162506414d61b8b2020-11-25T00:40:51ZengPublic Library of Science (PLoS)PLoS ONE1932-62032016-01-011112e016690010.1371/journal.pone.0166900The Rim and the Ancient Mariner: The Nautical Horizon Affects Postural Sway in Older Adults.Justin MunafoMichael G WadeNick StergiouThomas A StoffregenOn 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.http://europepmc.org/articles/PMC5156431?pdf=render |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Justin Munafo Michael G Wade Nick Stergiou Thomas A Stoffregen |
spellingShingle |
Justin Munafo Michael G Wade Nick Stergiou Thomas A Stoffregen The Rim and the Ancient Mariner: The Nautical Horizon Affects Postural Sway in Older Adults. PLoS ONE |
author_facet |
Justin Munafo Michael G Wade Nick Stergiou Thomas A Stoffregen |
author_sort |
Justin Munafo |
title |
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_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_sort |
rim and the ancient mariner: the nautical horizon affects postural sway in older adults. |
publisher |
Public Library of Science (PLoS) |
series |
PLoS ONE |
issn |
1932-6203 |
publishDate |
2016-01-01 |
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. |
url |
http://europepmc.org/articles/PMC5156431?pdf=render |
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