Electromyography (EMG)
Bipolar
Bipolar EMG from the right SOL was recorded with a custom-made system (EISA, University of Freiburg, Germany). The SOL was selected because this muscle is one of the prime movers in this particular task in the anterior–posterior direction. The skin was prepared (shaved, abraded and sanitized) before the surface electrodes (Ag/AgCI, Ambu Blue Sensor P, Ballerup, Denmark) were firmly placed over the muscle belly and the tibia shaft (reference electrode). All electrodes were attached according to SENIAM guidelines