Article

Assessment of changes in standing balance following an intervention requires
accurate measurement of balance parameters. The reliability of centre of pressure
measures of balance during single-leg standing has not been reported in
individuals with knee osteoarthritis. The purpose of this study was to assess the
test re-test reliability of force platform centre of pressure measures during
single-leg standing in older adults with knee osteoarthritis. Twenty-five adults
with radiographic evidence of knee osteoarthritis performed single-leg standing
balance trials on a laboratory-grade force platform on two occasions, no more
than 14 days apart. Participants were asked to stand on their more symptomatic
limb for three, ten second trials. Centre of pressure measures collected
included: standard deviation in the mediolateral and anteroposterior directions,
mean path length, velocity, and area. The mean of the three trials was
calculated. Intraclass correlation coefficients, standard error of measurement,
Bland and Altman plots and the minimum detectable change were calculated.
Intraclass correlation coefficients ranged from 0.54 to 0.87, suggesting mixed
reliability of measures. Reliability was lowest for the centre of pressure area
(intraclass correlation coefficient=0.54), and highest for centre of pressure
velocity and path length (intraclass correlation coefficient=0.87 for both).
Standard error of measurement values were low for standard deviation in the
mediolateral direction and high for centre of pressure area. These results
suggest that centre of pressure values, in particular path length and velocity,
are appropriate for assessment of standing balance in people with medial knee
osteoarthritis.
CI - Copyright (c) 2014 Elsevier B.V. All rights reserved.

Langue : ANGLAIS