PDF Olivier
نویسندگان
چکیده
The center of foot pressure (CP) motions, representing the net neuromuscular control, was compared to the center of gravity (CG) motions, representing the net performance. The comparison focused on the trajectory path length parameter along the mediolateral and antero-posterior axes because these two variables depend on amplitude versus frequency relationship. This relationship was used to evaluate the CG motions based on the CP motions. Seven subjects stood still on a force plate with eyes open and eyes closed. The results showed that the ratio of (CP – CG)/CP trajectory path length was personal for each subject. These results suggest different levels of passive (ligaments, elastic properties) and active (reflex activity) stiffness. For some subjects, this ratio was significantly lower for the eyes open condition than for the eyes closed condition, indicating a decrease of the active stiffness for the eyes open condition. Therefore, a CG – CP comparative analysis appeared helpful in understanding the control of balance and necessary to quantify the subjects’ net performance.
منابع مشابه
D13.8: Applicability of privacy models
Title: “D13.8: Applicability of privacy models” Author: WP13 Editors: David-Olivier Jaquet-Chiffelle Bernhard Anrig Emmanuel Benoist (VIP Bern University of Applied Sciences) Reviewers: Jozef Vyskoc (VaF, s.r.o. Slovak Republic) Hans J.C. Buitelaar (Tilburg U., Netherlands) Identifier: D13.8 Type: [Deliverable] Version: 1.0 Date: Monday, 02 June 2008 Status: [Final] Class: [Public] File: fidis-...
متن کاملSegmentation and Classification of Polarimetric Sar Data Based on the Kummeru Distribution
Thinner spatial features can be observed from the high resolution of newly available spaceborne and airborne SAR images. Heterogeneous clutter models should be used to model the covariance matrix because each resolution cell contains only a small number of scatterers. In this paper, we focus on the use of a Fisher probability density function (pdf) to model the SAR clutter. First, the benefit o...
متن کاملMoreels , Olivier Devuyst , Paul Steels and Emmy
[PDF] [Full Text] [Abstract] , February , 2010; 298 (2): F365-F380. Am J Physiol Renal Physiol Nesbit, Patrik Rorsman, Olivier Devuyst, Frances M. Ashcroft and Rajesh V. Thakker Galvanovskis, Siân E. Williams, Francois Jouret, Fiona T. F. Wu, Pierre J. Courtoy, M. Andrew Anita A. C. Reed, Nellie Y. Loh, Sara Terryn, Jonathan D. Lippiat, Chris Partridge, Juris and microtubular transport: relev...
متن کاملAcute myeloid leukemia with translocation t(3;5): new molecular insight
Publisher's Disclaimer. E-publishing ahead of print is increasingly important for the rapid dissemination of science. Haematologica is, therefore, E-publishing PDF files of an early version of manuscripts that have completed a regular peer review and have been accepted for publication. E-publishing of this PDF file has been approved by the authors. After having E-published Ahead of Print, manus...
متن کاملHierarchical and multiscale Mean Shift segmentation of population grids
The Mean Shift (MS) algorithm allows to identify clusters that are catchment areas of modes of a probability density function (pdf). We propose to use a multiscale and hierarchical implementation of the algorithm to process grid data of population and identify automatically urban centers and their dependant sub-centers through scales. The multiscale structure is obtained by increasing iterative...
متن کامل