The breakthrough discovery used in creating this support is a new understanding of how the human body reacts to sudden, unexpected events (accidents) which result in applied loading (stress) to the lumbar spine. One study has shown that, during such events, the strong back muscles can over-contract by as much as 70%.This over-contraction is often the hazard that triggers back injury. The ACCUPRESSURE Back Support reduces this excess exertion by up to 46%.