Fig. 1From: Reliability and minimal detectable change of the ‘Imperial Spine’ marker set for the evaluation of spinal and lower limb kinematics in adultsThe ‘Imperial Spine’ marker set, segments and local anatomical frames. For all local anatomical frames, the + y axis (cephalad) is indicated in green, the + z axis (towards the right) in blue and the + x axis (perpendicular to both + y and + z axes) in redBack to article page