study of age-related changes in postural control during quiet standing through linear discriminant analysis研究年龄相关的变化姿势控制在安静的站通过线性判别分析.pdf

BioMedical Engineering OnLine BioMed Central Research Open Access Study of age-related changes in postural control during quiet standing through Linear Discriminant Analysis Guilherme L Cavalheiro, Maria Fernanda S Almeida, Adriano A Pereira and Adriano O Andrade* Address: Biomedical Engineering Laboratory, Faculty of Electrical Engineering, Federal University of Uberlândia, Campus Santa Mônica, Bloco 1E, Av. João Naves de Ávila, 2121, Uberlândia, Minas Gerais, 38.408-100, Brazil Email: Guilherme L Cavalheiro - glcavalheiro@.br; Maria Fernanda S Almeida - nandasalmeida@.br; Adriano A Pereira - adriano@eletrica.ufu.br; Adriano O Andrade* - aoandrade@.br * Corresponding author Published: 18 November 2009 Received: 3 July 2009 Accepted: 18 November 2009 BioMedical Engineering OnLine 2009, 8:35 doi:10.1186/1475-925X-8-35 This article is available from: /content/8/1/35 © 2009 Cavalheiro et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Background: The human body adopts a number of strategies to maintain an upright position. The analysis of the human balance allows for the understanding and identification of such strategies. The displacement of the centre of pressure (COP) is a measure that has been successfully employed in studies regarding the postural control. Most of these investi