Standing External Rotation - Arm Adducted to Side
The concentric phase of external rotation is achieved by using the contralateral arm to rotate the arm out to the side to achieve end-range external rotation. At this stage, the individual should laterally step to the side to further increase resistance from the band or pulley. Once increased resistance is perceived, the individual slowly allows the arm to return to the start position to complete the eccentric action of this exercise.
Strength & Conditioning Journal. 35(2):8-10, April 2013