One of the basic tools of strength training is a weightlifting belt. Some may think of it as “cheating,” as a way to artificially lift more weights. Not exactly.
What the researchers found was that weightlifting belts could increase intra-abdominal pressure (i.e., compressing the gases and fluids in the abdominal cavity) that serves to decompress the spine. Or, to use modern-day terminology, belts serve to create a stable “core.”