Figure 6. Comparison of PF torque responses for 6 repeated stretches at 120 deg s⁻¹ in subjects not using anti-spastic medications (A) and subjects taking anti-spastic medications (B).

Significance was demonstrated only in the group not taking anti-spastic medications for all velocities. EMG responses from the MG (C and D) and SOL (E and F) of subjects not using anti-spastic medications versus those who required baclofen. For MG activity, significant increases were observed at only 90 deg s⁻¹ in subjects using baclofen. In contrast, significant increases in SOL EMG was observed at 60–120 deg s⁻¹ for subjects not using baclofen (E), whereas only one subject at 120 deg s⁻¹ demonstrated a large increase in SOL activity when using baclofen (note large increase in SOL EMG at final stretches).