Prone Y’s
NOTE: Do not lift the chest using the lower back muscles as shown in the video. Place a pillow under your belly and hips to support the lower back and rest your forehead on a rolled towel to keep your neck in neutral and give yourself some breathing room.
Try to isolate the movement and muscle work to the shoulder blades and upper back muscles, especially the lower traps as you reach overhead. Only reach as far forward as you can without compensating with your upper traps (shrugging your shoulders up). If you feel your upper traps doing most of the work, stop, reset, and decrease the range of your reach.
This exercise may also be performed at an incline while lying on your stomach over a yoga ball. Perform the version as instructed by your physical therapist during your last treatment session.