... 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, ... by a personal computer usingcustomized LabView (National Instruments, Austin, TX)software. Force and motion data from the transducer weresampled at 200 Hz using an analog -to- digital board. ... nonlinear and time varying, accurate control of muscles to producefunctional movements is very difficult. Accurate and predictive mathematical models can facilitatethe design of stimulation patterns...