Figure 5
From: A pneumatic power harvesting ankle-foot orthosis to prevent foot-drop
Ground reaction force and pneumatic pressure. Sample vertical ground reaction force (dashed line) and pressure measured inline prior to the actuator cylinder (solid line) as a function of percent gait cycle. Heel and metatarsal pressure sensors indicate points of initial contact (heel sensor start), foot flat (overlap of both sensor signals) and toe off (metatarsal sensor end).