Research Article

Oscillatory Corticospinal Activity during Static Contraction of Ankle Muscles Is Reduced in Healthy Old versus Young Adults

Figure 4

EMG power. Summed EMG power in alpha (5–15 Hz) and beta (15–35 Hz) bands for young and old subjects during dorsiflexion (white background) and plantar flexion (grey background). Significant differences between young and old groups are indicated by ; . TAprox: proximal end of anterior tibial; TAdist: distal end of anterior tibial; SOL: soleus; GM: medial gastrocnemius.