http://phys.org/ en-us Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. Australian researchers have admitted they had found no scientific proof that hi-tech running shoes improve athletic performance or limit injury. http://phys.org/news156063767.html Medicine & Health Thu, 12 Mar 2009 08:03:07 EST news156063767