Figure 8
Example arm activity for two movements (left: sit-to-stand, right: stand-to-sit). Top: Spatial progression of the CoM and the lateral elbow marker. The black and red lines connecting the points illustrate the spatial progression. The distances between the points illustrate 5% of the total duration in each case. The cross-connections help assess whether the elbow and CoM moved at comparable speeds (as with nearly parallel cross-connections). Bottom: The whole-body movement is shown along with the plots above.
