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: Movement variability in stroke patients and controls performing two upper limb functional tasks: a new assessment methodology | BioMed Central Journal of NeuroEngineering and Rehabilitation Open Access Movement variability in stroke patients and controls performing two upper limb functional tasks a new assessment methodology Sibylle B Thies 1 Phil A Tresadern1 Laurence P Kenney1 Joel Smith1 David Howard1 John Y Goulermas2 Christine Smith1 and Julie Rigby1 Address 1Centre for Rehabilitation and Human Performance Research University of Salford Salford Greater Manchester UK and - Department of Electrical Engineering and Electronics University of Liverpool Liverpool UK Email Sibylle B Thies - Phil ATresadern - Laurence P Joel Smith - David Howard - John Y Goulermas - Christine Smith - Julie Rigby - Corresponding author Published 23 January 2009 Received 28 April 2008 Journal of NeuroEngineering and Rehabilitation 2009 6 2 doi 1743-0003-6-2 Accepted 23 January 2009 This article is available from http content 6 1 2 2009 Thies 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 In the evaluation of upper limb impairment post stroke there remains a gap between detailed kinematic analyses with expensive motion capturing systems and common clinical assessment tests. In particular although many clinical tests evaluate the performance of functional tasks metrics to characterise upper limb kinematics are generally not applicable to such tasks and very limited in scope. This paper reports on a novel user-friendly methodology that allows for the assessment of both signal magnitude and .