The Wheelchair Propulsion Wheel Rotation Angle Function Symmetry in the Propelling Phase: Motion Capture Research and a Mathematical Model

The movement of a wheelchair with manual propulsion depends on the kinematics human body and forces exerted by muscles. To design innovative systems, biomechanical parameters resulting from interaction in this anthropotechnical system must be formalised. research objectives were thus adopted: an analysis wheel angle rotation hand movement’s trajectory mathematical formalisation described as function propelling phase’s duration. was carried out using three variants manually propelled wheelchairs group 10 patients representing same (C50) anthropometric dimensions. demonstrated that shows features central symmetry occurring at φ 52° phase duration 58%. Moreover, measurements averaged model during developed, depending percentage