DEVICE FOR CALCULATING, DURING ONE STEP OR EACH SUCCESSIVE STEP OF THE GAIT OF A SUBJECT, THE PUSH-OFF P0 OF THE SUBJECT

摘要

The present invention presents a device for calculating, during one step or each successive step of the gait of a subject, the push-off P₀ of the subject, which is the power per kilogram released by the ankle push-off moment, which comprises: at least one inertial measurement unit (1A, 1 B) on one foot of the subject, the inertial measurement unit (1 A, 1 B) having: at least one accelerometer to measure the vertical and antero-posterior accelerations and/or at least one gyroscope to measure the medic-lateral angular speed data ά during the gait, storage and calculation means (2A) connected to the Inertial measurement unit (1A, 1 B), configured to calculate: for the foot, and for the step or each successive step of the gait: - the time of the heel-off and the time of the toe-off, - the push-off P₀, by the Euler's equation stating that the sum of moments acting on the foot taken as a rigid body, being equal to the rate of change of the angular momentum of the foot, with the calculation of the push-off P₀ at the time of the toe-off where the sagittal angular momentum is at its maximum in absolute value, displaying means (2B) connected to the storage and calculation means (2A).