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Centre for Policy on Ageing | |
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| Aging and time to instability in posture | | Author(s) | Semyon M Slobounov, Sarah A Moss, Elena S Slobounova |
| Journal title | The Journals of Gerontology Series A: Biological sciences and medical sciences, vol 53A, no 1, January 1998 |
| Pages | pp B71-B78 |
| Keywords | Mobility ; Biological ageing ; Falls ; United States of America. |
| Annotation | Two experiments are reported that were set up to examine the spatial-temporal boundaries of postural instability in upright stance as a function of age (60-96 years) and postural conditions. Subjects stood on a force platform under different experimental conditions (vision or no vision, and arms up or down), so that effect of age on key dynamic properties of postural stability could be determined. The findings showed that the ratio of the area of the motion of the centre of the pressure to the area within the stability boundary increased with age. Also, the virtual time-to-contact with the postural stability boundary decreased with age. Collectively, the findings show that the margins to the spatial-temporal boundaries of postural stability decrease with advancing age in older people. These reduced margins of dynamic stability may be a factor contributing to the progressive instability of posture with ageing in older people. (RH). |
| Accession Number | CPA-980310414 A |
| Classmark | C4: BH: OLF: 7T |
Data © Centre for Policy on Ageing |
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| ...from the Ageinfo database published by Centre for Policy on Ageing. |
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