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: Development of a mathematical model for predicting electrically elicited quadriceps femoris muscle forces during isovelocity knee joint motion | Journal of NeuroEngineering and Rehabilitation BioMed Central Research Development of a mathematical model for predicting electrically elicited quadriceps femoris muscle forces during isovelocity knee joint motion Ramu Perumal 1 Anthony S Wexler2 and Stuart A Binder-Macleod1 Open Access Address Department of Physical Therapy University of Delaware Newark DE USA and 2Department of Mechanical and Aeronautical Engineering Civil and Environmental Engineering and Land Air and Water Resources University of California Davis CA USA Email Ramu Perumal - ramu@ Anthony S Wexler - aswexler@ Stuart A Binder-Macleod - sbinder@ Corresponding author Published 10 December 2008 Received 12 December 2007 r . . . . r Accepted 10 December 2008 Journal of NeuroEngineering and Rehabilitation 2008 5 33 doi l743-0003-5-33 This article is available from http content 5 1 33 2008 Perumal 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 Direct electrical activation of skeletal muscles of patients with upper motor neuron lesions can restore functional movements such as standing or walking. Because responses to electrical stimulation are highly nonlinear and time varying accurate control of muscles to produce functional movements is very difficult. Accurate and predictive mathematical models can facilitate the design of stimulation patterns and control strategies that will produce the desired force and motion. In the present study we build upon our previous isometric model to capture the effects of constant angular velocity on the forces produced during electrically elicited concentric contractions of healthy human quadriceps femoris muscle. Modelling the isovelocity .
