期刊
MEDICAL ENGINEERING & PHYSICS
卷 24, 期 9, 页码 623-631出版社
ELSEVIER SCI LTD
DOI: 10.1016/S1350-4533(02)00046-2
关键词
posture; force plate; posturographic parameters; sensitivity; standardization
The objective of this study was to evaluate the sensitivity of posturographic parameters (PP) to changes in acquisition settings. A group of eight young adults underwent a set of typical orthostatic posture trials. and selected PP were then calculated from a set of centre of pressure (CoP) displacement time series obtained by applying different cut-off frequencies to the same set of raw data. Four PP out of 11 showed significant changes with respect to cut-off frequency. Statistical mechanics parameters exhibited smaller sensitivity than summary measures. On the basis of the results obtained, a proposal for a standard cut-off frequency and a sampling rate value is embodied in the paper together with some suggestions on measurement settings, with a view to standardized use of instrumentation for quantitative analysis in orthostatic posturography. (C) 2002 IPEM. Published by Elsevier Science Ltd. All rights reserved.
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