Prototype of revolutionary running device being worked on by scientists at US university
A wearable spring-based contraption that attaches to the legs has the potential to boost human running speeds by 50%, according to researchers who hope to build the first prototype over the next year.
Scientists came up with the concept after computer models showed that it was possible to dramatically increase the amount of energy people put into each running step by enabling them to do work when their feet are in the air.
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