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. 2013 Sep 24;2013:640861. doi: 10.1155/2013/640861

Figure 2.

Figure 2

(a) The load sensors are at the four legs of Wii Balance Board (Wii BB). The origin for Wii BB reference frame was placed on the horizontal standing surface of Wii BB, which was taken at the centre of the four legs as illustrated by the intersection of the diagonals, and the X-direction was assumed from the centre of leg 1 to the centre of leg 2, as shown. The Y-direction was upwards from the horizontal standing surface of Wii BB. (b) Real-time feedback of the center of pressure location.