Paired transspinal stimuli induced transspinal evoked potential (TEP) depression in ankle muscles for KNIKOU-LAB4Recovery protocol (P-KLAB), protocol 2 (P-2), protocol 3 (P-3), and protocol 4 (P-4). Representative examples of nonrectified waveform averages (n = 12) of TEPs recorded from the left (L) and right (R) soleus (SOL), medial gastrocnemius (MG), and tibialis anterior (TA) muscles upon thoracolumbar paired stimuli at 60 and 100 ms for all 4 protocols tested in this study.