There is a whole world of exercises that can be done on a swiss ball, that are not available otherwise.
This particular move is great for strengthening your core. It’s a bit of an intermediate to advanced movement.
Proper starting position is critical. Listen carefully to the instructions in this video to get the proper form.
Back pain issues are often caused or aggravated by poor core abdominal tone. This exercise can be part of a good back care program.
Anyone looking to improve their posture would also likely benefit from this exercise. Once again, poor posture and back pain issues, often go hand in hand.