Article

The purpose of this study was to establish test-retest reliability of centre of
pressure (COP) measurements obtained by an AccuGait portable forceplate (ACG),
mean COG sway velocity measured by a Basic Balance Master (BBM) and clinical
balance tests in children with and without balance difficulties. 49 typically
developing children and 23 hearing impaired children, with a higher risk for
stability problems, between 6 and 12 years of age participated. Each child
performed the modified Clinical Test of Sensory Interaction on Balance (mCTSIB),
Unilateral Stance (US) and Tandem Stance on ACG, mCTSIB and US on BBM and
clinical balance tests: one-leg standing, balance beam walking and one-leg
hopping. All subjects completed 2 test sessions on 2 different days in the same
week assessed by the same examiner. Among COP measurements obtained by the ACG,
mean sway velocity was the most reliable parameter with all ICCs higher than
0.72. The standard deviation (SD) of sway velocity, sway area, SD of
anterior-posterior and SD of medio-lateral COP data showed moderate to excellent
reliability with ICCs between 0.55 and 0.96 but some caution must be taken into
account in some conditions. BBM is less reliable but clinical balance tests are
as reliable as ACG. Hearing impaired children exhibited better relative
reliability (ICC) and comparable absolute reliability (SEM) for most balance
parameters compared to typically developing children. Reliable information
regarding postural stability of typically developing children and hearing
impaired children may be obtained utilizing COP measurements generated by an
AccuGait system and clinical balance tests.
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