Fig. 1From: The effects of an 8-week stabilization exercise program on lumbar movement sense in patients with low back painMotor driven lumbar proprioception chair. The upper body was fixed to the backrest while the lower body (pelvis and lower limbs) was rotated in the transverse plane, inducing an axial rotation of the lumbar spine. In this figure, the lower body is slightly rotated to the rightBack to article page