Fig 2. Representative data.

Effects of active ankle torque and passive tendon stretch on ankle angle (footplate minus shin angle), left ankle torque, rectified left medial gastrocnemius and tibialis anterior EMG. Top panel are data from study 1 and bottom panel are data from study 2, all taken from one participant. The horizontal line beneath the torque traces represents 0 Nm. For study 2, ankle angle equals 90 deg when the footplate is levelled; it decreases (in this case to ~ 73 deg) when the footplate rotates upwards from 0 deg to 15 deg. The difference (from 75 deg) is due to body and leg movement associated with the toes-up stance.