Article

Accelerometry (ACC) shows promise as an easily implemented clinical measure of
balance. The purpose of the study was to estimate test-retest reliability of ACC
measures and determine the relationship between ACC measured at the pelvis and
underfoot center of pressure (COP) measures during sensory organization test
(SOT) conditions. Eighty-one subjects were recruited from the community with no
known orthopedic or vestibular deficits (19-85 years). Subjects completed three
consecutive, ninety second trials for each of the six SOT conditions, while
wearing the accelerometer. ACC and COP time series were described by calculating
the normalized path length, root mean square (RMS), and peak-to-peak values. The
test-retest reliability of the three measures within each SOT condition was
estimated over three trials using the intraclass correlation coefficient. ACC and
COP test-retest reliability were similar, ranging from 0.63 to 0.80 using ACC and
0.42 to 0.81 using COP for the measure of normalized path length. Linear
regression between ACC and COP measures showed significant correlation under
almost every SOT condition using both single and average measures across trials.
The degree of association between COP and ACC was equivalent when using the first
trial or the 3-trial average, suggesting that one trial may be sufficient. The
use of accelerometry may have value in estimating balance function and minimizing
clinical evaluation time.
CI - Copyright (c) 2011 Elsevier B.V. All rights reserved.

Langue : ANGLAIS