Inversion tables are used as a treatment primarily for back pain. They are designed to utilize gravity and create some traction in the spine and pelvis, which can take pressure of compressed joints, discs and nerves. Inversion therapy usually involves laying at a downward angle, not hanging completely upside down.
Foldable inversion table, extended and set up for use. Inversion table in action. Inversion therapy involves being upside down or at an inverted angle while hanging by the legs .