Fig. 2.

VR system overview

Fig. 2a: Data from the 6-axis accelerometer accompanying the movement of the lower limbs were input into the VR device and reflected in the movement of the lower-limb avatar. An explanation of the 6-axis acceleration setting is displayed on the external surface before the game starts, and the user fixes the 6-axis accelerometers to both ankles by themselves.

Fig. 2b: A VR exercise therapy system does not require a computer and can only be completed using a VR device. Games can be selected by lifting and rowing when the VR device is turned on.