why does lower back.hurt when i do.leg raises
This rupture can cause swelling in the area of the disc, which can press on nerves that come out of the lower spine. As your knees bend and you bring the weight down towards you in a leg press, your lower back can round. When it rounds there is a lot of pressure on the discs between your vertebrae. Your back is also being pressed back against the seat because it's supporting the weight of the leg press. This combination of pressure from the weight and from rounding of the lower back can cause a herniation of the lumbar spine.