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Exemplary data of one reactive hop: ground reaction force (GRF) and rectified EMG signals of soleus (SOL), gastrocnemius medialis (GM), tibialis anterior (TA), vastus lateralis (VL), rectus femoris (RF), and biceps femoris (BF). The preactivity phase (50 ms before touchdown (TD) until touchdown) is marked in gray, the take-off (TO) is marked with a vertical line.
