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The trap bar is an implement used in weight training. It is an assemblage of bars bent into an angle, then welded into a shape which lies flat in a plane, consisting of:
The trap bar was invented, patented and trademarked by Al Gerard, a competitive powerlifter. It is often thought to have been named after the trapezius muscles, the muscle it was designed to train, with shoulder shrugs. In addition to shrugs, the bar is also used for trapbar deadlift, trapbar jumps, overhead/military presses, upright rows or "high pulls," and stiff leg deadlifts. However, the original shape was trapezoidal, leading to it being referred to as the "trap bar". Its design has since changed from the original into a hexagonal shape, and can be correctly referred to as a "hex bar".
Variants are produced by several vendors.