https://www.sciencedaily.com/releases/2020/02/200220182745.htm > The unusual mandate results from a recent International Paralympic Committee rule change that lowered the Maximum Allowable Standing Height (MASH) for double, below-the-knee amputees racing in prosthetic legs. The rule, intended to prevent unfair advantages, stems from the long-held assumption that greater height equals greater speed. > But a small, first-of-its kind University of Colorado Boulder study published today in the journal PLOS ONE concludes that isn't the case.