The design of the springs and foam covers in the floor mat is intended to create more bounce for gymnasts who are able to put in more force so they can achieve greater heights. As for Biles, it is the force-to-weight ratio that allows her to jump more than twice her height. The production of more momentum from the application of force that precedes skill and other technical factors leads to this increase.
AMAZING! I'm so geeked about the Olympics and watching with my 8 yo daughter. -- After their routines I feel they should walk a little to bring down the heart rate as opposed to sitting right away.