lie prone on swiss ball, squeeze shoulder blades, elevate arms laterally with dumbbells, lower and repeat.
Lie on the Swiss ball such that stomach and chest resting on ball and toes on the floor, arms by the side with holding dumbbells. Squeeze the shoulder blades and elevate the arms towards the ceiling by the side, lower the arms towards the floor to starting position and repeat.
Nothing here is a prescription. Your physiotherapist decides which of these are yours, and when.
