This drawing would be called the "push off". Note that every line and shape on the drawing helps the upward thrust. Even the tail, which is still following the path set up for it by its primary force, the rump, helps by way of contrast and followthrough. Pick any shape on the figure and compare it to drawing #6 on the preceding page. Note how each shape changes to enhance the overall shape and action: the neck, the chest, the legs, the back, etc.
Even though this is just one drawing, there is no doubt about the action that is taking place in this part of the scene. This should be true of any drawing in any scene.