Methods and apparatus for back exercise are provided. An exercise bench apparatus includes a beam positioned at an incline with respect to the horizontal, a seat member coupled to the beam wherein the seat member is configured to be positioned at a selectable position along the beam, a knee brace coupled to the beam, the knee brace configured to be positioned at a selectable position along the beam, and a stabilizer arm rotatable with respect to the beam and configured to be rotated away from a user in a first position, the stabilizer arm configured to engage the user in a second position such that a pelvic region of the user is substantially immobilized.