Figure 1
From: Muscle synergies are consistent across level and uphill treadmill running

Ensemble-averaged electromyographic (EMG) patterns of 10 recorded muscles for each condition. Averaged EMG patterns across 10 consecutive running cycles were normalized to the respective maximum value among all speeds and inclinations and expressed as a function of the percentage of the cycle. Colored bold lines indicate mean EMG patterns and colored filled areas indicate the standard deviation. a.u., arbitrary units.