CKC corticokinematic coherence CoV coefficient of variation EMG electromyography GM gastrocnemius medialis MDF median frequency MEF movement-evoked field MEG magnetoencephalography MVC maximal voluntary contraction PSD power spectral density RMS root mean square SM1 primary sensorimotor cortex SOL soleus TA tibialis anterior 1 Introduction Muscle fatigue in the lower extremities primarily affects balance and locomotor performance (Helbostad et al. 2010; T. Li et al.
