Fig 1
From: Joint torque variability and repeatability during cyclic flexion-extension of the elbow
Experimental chair designed to perform elbow flexion/extension in the sagittal plane. Legend: a Design plan of the chair, featuring the ropes that limit the motion amplitude and the holes into which the elbow optokinetic sensor is inserted to avoid the elbow motion; b Side view of the chair, pointing out the elbow optokinetic sensor is inserted to avoid the elbow motion; c Front view of the chair, pointing out the ropes that limit the motion amplitude