Abstract：
:Perceived postural stability has been reported to decrease as sway area increases on firm surfaces. However, changes in perceived stability under increasingly challenging conditions (e.g., removal of sensory inputs) and the relationship with sway area are not well characterized. Moreover, whether perceived stability varies as a function of age or history of falls is unknown. Here we investigate how perceived postural stability is related to sway area and whether this relationship varies as a function of age and fall history while vision and proprioceptive information are manipulated. Sway area was measured in 427 participants from the Baltimore Longitudinal Study of Aging while standing with eyes open and eyes closed on the floor and a foam cushion. Participants rated their stability [0 (completely unstable) to 10 (completely stable)] after each condition, and reported whether they had fallen in the past year. Perceived stability was negatively associated with sway area (cm2) such that individuals who swayed more felt less stable across all conditions (β = - 0.53, p < 0.001). Perceived stability decreased with increasing age (β = - 0.019, p < 0.001), independent of sway area. Fallers had a greater decline in perceived stability across conditions (F = 2.76, p = 0.042) compared to non-fallers, independent of sway area. Perceived postural stability declined as sway area increased during a multisensory balance test. A history of falling negatively impacts perceived postural stability when vision and proprioception are simultaneously challenged. Perceived postural stability may provide additional information useful for identifying individuals at risk of falls.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Anson E,Studenski S,Sparto PJ,Agrawal Ydoi
10.1007/s00221-018-5458-1subject
Has Abstractpub_date
2019-03-01 00:00:00pages
769-776issue
3eissn
0014-4819issn
1432-1106pii
10.1007/s00221-018-5458-1journal_volume
237pub_type
杂志文章abstract：:Visual judgment of small numerosities (<4) is generally assumed to be done through subitizing, which is a faster process than counting. Subitizing has also been shown to occur in haptic judgment of the number of spheres in the hand. Furthermore, interactions have been shown to exist between visually perceived numbers ...
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journal_title：Experimental brain research
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journal_title：Experimental brain research
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00221-019-05721-w
更新日期：2020-02-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
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更新日期：1999-04-01 00:00:00
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更新日期：1986-01-01 00:00:00
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更新日期：2002-11-01 00:00:00
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更新日期：2013-03-01 00:00:00
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journal_title：Experimental brain research
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journal_title：Experimental brain research
pub_type： 杂志文章
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