Activation reduction following active lengthening for position and torque matching tasks

Following active muscle lengthening there is less activation (i.e., Electromyography; EMG) required to match a given torque target as compared with a purely isometric contraction. This activation reduction (AR) is typically investigated during torque matching tasks. It is less clear whether following active lengthening there is AR for a position matching task. There was no difference in relative %AR for both the torque and position matching task. However, more activation was required for both the position task isometric and isometric steady-state following active lengthening.