Figure 1. Representative procedures of a specific table tennis test for determination of AWC using a mechanical ball thrower. The figure demonstrates the mechanical ball thrower (NEWGY PONG 2000), with the projections of ball displacement, and the areas the balls made contact on the table tennis table. Ball contact was adjusted to occur between 50 and 60-cm beyond the net, adjustment of the equipment resulted in four fixed areas of ball contact with the table.