A load detecting apparatus includes a load controller. In order to identifying predetermined number of motions performed on the load controller by the player, for example, a condition of a ratio of load values to a body weight value and a condition relating to a position of a center of gravity are defined in advance. The ratio of the detected load values to the body weight value and the position of the center of gravity are calculated, and on the basis of the ratio and the position of the center of gravity, a motion performed on the load controller by the player is determined.