Abstract: An inflatable flexible bladder is mounted on the surface of a weightlifter's bench to provide support to the spinal region. A pressure device activatable by the hand or foot of the weightlifter is employed to provide desired supporting internal pressure to the bladder. In an alternative embodiment, the inflatable bladder is mounted on an axially traversing carriage so that its longitudinal position on the weightlifting bench may be adjusted to comfortably fit weightlifters of varying size. A locking assembly is provided to fix the carriage in place after adjustment.