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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Lin, Dingding Seol, Hyang Nussbaum, Maury A. Madigan, Michael L. |
| Description | Country affiliation: United States Author Affiliation: Lin D ( Department of Industrial and Systems Engineering, Virginia Tech, Blacksburg, VA, USA.) |
| Abstract | The objectives of this study were to assess the within-day and between-day reliability of several center of pressure (COP)-based measures of postural sway and identify whether there were age-related differences in reliability. Thirty-two healthy individuals (16 younger and 16 older) participated. COP was recorded during quiet upright stance on 4 different days, and a variety of measures determined: mean velocity, median power frequency, RMS distance, sway area, and two fractal measures derived from Hurst rescaled range analysis (HR/S) and detrended fluctuation analysis (DFA). Intraclass correlation coefficient (ICC) and standard error of measurement (SEM) were used to quantify reliability. Mean velocity was the most reliable measure. DFA exponents had relatively better reliability than HR/S exponents. In general, within-day reliability was better than between-day. In comparison with younger participants, older participants exhibited better relative reliability (ICC) for all COP measures and comparable absolute reliability (SEM) except for mean velocity and sway area. These results may be useful in guiding the future selection and interpretation of COP-based measures. |
| File Format | HTM / HTML |
| ISSN | 09666362 |
| Issue Number | 2 |
| Volume Number | 28 |
| e-ISSN | 18792219 |
| Journal | Gait & Posture |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2008-08-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Young Adult Discipline Orthopedics Age Factors Humans Middle Aged Female Male Physiology Aged Journal Article Research Support, U.s. Gov't, P.h.s. Posture |
| Content Type | Text |
| Resource Type | Article |
| Subject | Orthopedics and Sports Medicine Rehabilitation Biophysics Sports Science |
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