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In the figure below, Becky is initially at the end of the acceleration stage. Move the mouse over the figure to see the transition between these two stages. The key point of this transition is that the upper arm rotation provides an important source of acceleration.
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As with the previous transition, the body is stable and compact. Since the rotation stage is over, there are no longer large outward forces pulling the racquet arm away from the body. From the top view, it is clear that the path of the racquet is still very simple and compact. Since the elbow was nicely positioned in front of the body plane as a result of the previous stage, the upper arm rotation can be carried out to deliver power to the strike stage. Your positioning after the rotation stage is critical if the upper arm rotation is to proceed with the butt of the racquet always in front of the head of the racquet. See racquet path. In this set of figures, Becky's arm is being used to sustain balance and stability and to counter the equal but opposite reaction. Caution: Develop this motion carefully. If you are stiff, you might strain a muscle by being too aggressive. Allow several weeks for full development. |