Print Email Facebook Twitter Sampling duration effects on centre of pressure descriptive measures Title Sampling duration effects on centre of pressure descriptive measures Author Van der Kooij, H. Campbell, A.D. Carpenter, M.G. Faculty Mechanical, Maritime and Materials Engineering Department Biomechanical Engineering Date 2011-05-01 Abstract 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 600 s 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. Subject sample durationcentre of pressurequiet stancereliabilitydescriptive measuresposturography To reference this document use: http://resolver.tudelft.nl/uuid:f2674c11-299c-41b0-9bfd-c4a2dd8268ce DOI https://doi.org/10.1016/j.gaitpost.2011.02.025 Publisher Elsevier ISSN 0966-6362 Source Gait & Posture, 34 (1), 2011 Part of collection Institutional Repository Document type journal article Rights (c) 2011 Elsevier Files PDF vanderKooij_2011.pdf 622.19 KB Close viewer /islandora/object/uuid:f2674c11-299c-41b0-9bfd-c4a2dd8268ce/datastream/OBJ/view