Example stroke survivor data illustrating merged plantarflexor module during walking but independent recruitment of the plantarflexors during reactive balance. GMAX, gluteus maximus; GMED, gluteus medius; TFL, tensor fascia lata; ADMG, adductor magnus; BFLH, biceps femoris long head; RFEM, rectus femoris; VLAT, vastus lateralis; MGAS, medial gastrocnemius; LGAS, lateral gastrocnemius; SOL, soleus; PERO, peroneus longus; TA, tibialis anterior.