Measures of postural steadiness:​ differences between healthy young and elderly adults

Prieto, Thomas E.; Myklebust, Joel B.; Hoffmann, Raymond G.; Lovett, Eric G.; Myklebust, Barbara M.

Affiliations

¹Department of Neurology, Medical College of Wisconsin, Milwaukee, WI 53226, USA

²Department of Biomedical Engineering, Marquette University, Milwaukee, WI 53233, USA

³Laboratory of Sensory-Motor Performance, Neurology Research-151, VA Medical Center, Milwaukee, WI 53295 USA

⁴Division of Biostatistics, Medical College of Wisconsin. Milwaukee, WI 53226 USA

⁵Department of Physical Medicine and Rehahilitation, Medical College of Wisconsin, Milwaukee, WI 53226 USA

Abstract

Measures of postural steadiness are used to characterize the dynamics of the postural control system associated with maintaining balance during quiet standing. The objective of this study was to evaluate the relative sensitivity of center-of-pressure (COP)-based measures to changes in postural steadiness related to age. A variety of time and frequency domain measures of postural steadiness were compared between a group of twenty healthy young adults (21-35 years) and a group of twenty healthy elderly adults (66-70 years) under both eyes-open and eyes-closed conditions. The measures that identified differences between the eyes-open and eyes-closed conditions in the young adult group were different than those that identified differences between the eye conditions in the elderly adult group. Mean velocity of the COP was the only measure that identified age-related changes in both eye conditions, and differences between eye conditions in both age groups. The results of this study will be useful to researchers and clinicians using COP-based measures to evaluate postural steadiness.

Links

DOI: 10.1109/10.532130

PubMed: 9214811

WoS: A1996VD55000010

History

Received: 1994-05-27

Revised: 1996-04-03

Cited By (37)

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