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Updated: Jul 17, 2026
Quantifying Arms and Legs Contributions during Repetitive Electrically-Assisted Sit-To-Stand Exercise in Paraplegics: A Pilot Study
Published on: November 11, 2022
A parametric investigation of swing motion triggered by electrical stimulation in paraplegic patients using response
Yongchul Kim1, Youngil Youm, Brian Schmit
1Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, South Korea.
Abstract:
We identified torque response of flexion reflex associated with hip angle and angular velocity in 6 subjects with chronic SCI and developed two dimensional dynamic model with three segments, thigh, shank and foot. Influences of stimulation parameters such as amplitude, frequency and duration time of pulse train for producing swing motion of lower limb were investigated with response surface method to obtain optimal solutions. The initial hip flexion velocity (F-value > 19.0) and knee flexion velocity (F-value > 9.0) were clearly significant, while the initial hip angle was indistinguishable from the estimated amount of error. When the limb motion was simulated with initial hip and knee flexion velocity, the stimulation amplitude was increased 53%, the frequency was decreased 37% and the duration time was decreased 33% with respect to no initial condition.
