tailieunhanh - Báo cáo hóa học: " Effects of an attention demanding task on dynamic stability during treadmill walking"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Effects of an attention demanding task on dynamic stability during treadmill walking | Journal of NeuroEngineering and Rehabilitation o BioMed Central Effects of an attention demanding task on dynamic stability during treadmill walking Jonathan B DingwelW1 Roland T Robbf1 Karen LTroyt2 and Mark D Grabineđ2 Address Department of Kinesiology Health Education University of Texas 1 University Station Mail Stop D3700 Austin TX 78712 USA and 2Department of Movement Sciences University of Illinois at Chicago 1919 West Taylor St. Chicago IL 60612 USA Email Jonathan B Dingwell - jdingwell@ Roland T Robb - roland@ Karen LTroy - klreed@ Mark D Grabiner - grabiner@ Corresponding author fEqual contributors Published 21 April 2008 Received 7 June 2007 Journal of NeuroEngineering and Rehabilitation 2008 5 12 doi 1743-0003-5-12 Accepted 21 April 2008 This article is available from http content 5 1 12 2008 Dingwell et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background People exhibit increased difficulty balancing when they perform secondary attention-distracting tasks while walking. However a previous study by Grabiner and Troy J. Neuroengineering Rehabil. 2005 found that young healthy subjects performing a concurrent Stroop task while walking on a motorized treadmill exhibited decreased step width variability. However measures of variability do not directly quantify how a system responds to perturbations. This study re-analyzed data from Grabiner and Troy 2005 to determine if performing the concurrent Stroop task directly affected the dynamic stability of walking in these same subjects. Methods Thirteen healthy volunteers walked on a motorized treadmill at their self-selected constant speed for 10 minutes both while performing the