Stand or sit. Position bent arm up to side; elbow bent shoulder height with wrist in front of elbow. Administrator stands at side of subject and grasps under subject's elbow and on top of wrist.
Administrator keeps subject's elbow directly lateral to subject's shoulder while gently pushing wrist down/back until tightness is felt or subject expresses slight discomfort. Repeat with opposite arm.
Wrist should be able to travel below transverse plane of shoulder. The distance wrist travels below shoulder or range of motion is noted for each side.