Article

The different measures used to characterize postural sway are sensitive to
variations in sampling duration, yet there remains marked variability and a lack
of consistency in this temporal parameter when compared between studies. We
investigated the effect of sampling duration on 22 commonly used frequency and
time domain measures and stabilogram diffusion coefficients. Participants stood
quietly on a forceplate during two 600s standing trials with eyes open and eyes
closed. The results clearly show that the amplitudes of the descriptive measures
are sensitive to sampling duration. Only measures related to the amount of sway
were sensitive for eyes open versus eyes closed conditions. In addition to sample
duration, the filter settings, sampling frequency and fitting windows should be
standardized since they also affect the magnitude of the descriptive measures.
Without such standards, the inability to accurately compare between studies will
persist.
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Langue : ANGLAIS