plotted are the mean average positions of the cop throughout a stroke of the six males and three females; of each participant 5 strokes were included in the data.
Context in source publication
... on the pairwise comparison (Table 2), the four different phases (EC, C, LC, ES) could be distinguished based on the normal and lateral force level of the push-off forces of the skaters). Figure 2 and Figure 3 show the skating motion together with the measured normal and lateral forces and COP (averaged over nine participants). ...