Using an Interactive Game to Reduce Fear and Increase Spine Motion in Low Back Pain

We will assess the influence of participation in a computer game of virtual dodge ball that requires whole-body reaching movements to manipulate an on-screen avatar. We will gradually reduce the gain of lumbar spine motion of the participant's on-screen avatar across the three game sessions such that participants will need to produce progressively larger excursions of the lumbar spine to manipulate their avatar's spinal motion. Specifically, in game session 1, the spine motion of the avatar is equal to that of the participant (gain=1); in session 2 spine motion of the avatar is 5% less than the participant (gain=0.95); in session 3 spine motion of the avatar is 10% less than the participant (gain=0.90).