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báo cáo hóa học: " Stepping stability: effects of sensory perturbation"

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:Stepping stability: effects of sensory perturbation | Journal of NeuroEngineering and Rehabilitation BioMed Central Research Stepping stability effects of sensory perturbation Chris A McGibbon 1 2 3 David E Krebs2 3 and Robert Wagenaar4 Open Access Address 1Institute of Biomedical Engineering University of New Brunswick 25 Dineen Drive Fredericton New Brunswick E3B 5A3 Canada Massachusetts General Hospital Biomotion Laboratory Boston MA 02114 USA 3MGH Institute of Health Professions Boston MA 02114 USA and 4Department of Physical Therapy Sargent College of Health and Rehabilitation Sciences Boston University Boston MA 02114 USA Email Chris A McGibbon - cmcgibb@unb.ca David E Krebs - dkrebs@partners.org RobertWagenaar - wagenaar@bu.edu Corresponding author Published 27 May 2005 Received 03 February 2005 Journal of NeuroEngineering and Rehabilitation 2005 2 9 doi 10.1186 1743- Accepted 27 May 2005 0003-2-9 This article is available from http www.jneuroengrehab.com content 2 1 9 2005 McGibbon et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http creativecommons.Org licenses by 2.0 which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background Few tools exist for quantifying locomotor stability in balance impaired populations. The objective of this study was to develop and evaluate a technique for quantifying stability of stepping in healthy people and people with peripheral vestibular hypofunction VH and central cerebellar pathology CB balance dysfunction by means a sensory auditory perturbation test. Methods Balance impaired and healthy subjects performed a repeated bench stepping task. The perturbation was applied by suddenly changing the cadence of the metronome 100 beat min to 80 beat min at a predetermined time but unpredictable by the subject during the trial. Perturbation response was quantified by computing the Euclidian distance expressed as a .