Fig. 8From: The AMP-Foot 3, new generation propulsive prosthetic feet with explosive motion characteristics: design and validationTime-based data of level ground walking at self selected speed (4.7 km/h) with the AMP-Foot 3 during one step. a Ankle, lever angle and PF spring force vs. time. b Motor ball nut displacement and current consumption vs. time. c Ankle torque vs. ankle angle. d Electrical and mechanical power vs. timeBack to article page