Set-up: Find a wall with a stable support located a little more than half a body length away. Start by lying on your back close to the wall, and place both legs vertically against it. Use the support to get to a comfortable but well-stretched distance from the wall.
Movement: Slowly and in control, let the legs move to the side and allow gravity to pull your legs to the floor. You should feel a stretch on the adductors on the inside of the thigh.
Instructions and effects for the Adductor Wall Stretch exercise 
Movement in Frontal Plane