Modelling the maximum voluntary joint torque/angular velocity relationship in human movement

摘要: The force exerted by a muscle is function of the activation level and maximum (tetanic) force. In "maximum" voluntary knee extensions lower for eccentric velocities than concentric velocities. aim this study was to model "differential activation" in order calculate extensor torque as angular velocity. Torque data were collected on two subjects during maximal eccentric-concentric using an isovelocity dynamometer with crank ranging from 50 450 degrees s(-1). theoretical tetanic torque/angular velocity relationship modelled four parameter comprising rectangular hyperbolas while activation/angular three that rose submaximal full high product these functions gave seven which fitted joint data, giving unbiased root mean square differences 1.9% 3.3% torques achieved. Differential accounts non-hyperbolic behaviour low can be may accurately defining level. Failure include differential considerations when modelling movements will lead errors estimation phase phase.