Jenny Meadows

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FILE - This is a Wednesday, Aug. 19, 2009 file photo of Britain's Jenny Meadows as she celebrates after winning the bronze medal in the final of the Women's 800m during the World Athletics Championships in Berlin. British runner Jenny Meadows is using a revolutionary DNA test designed to prevent injury and improve her performance ahead of the Commonwealth Games _ and a trio of leading European football teams are about to follow her lead. The test is a brainchild of London-based company DNAFit, which obtains genetic profiles _ using a simple mouth swab _ to identify genes that make athletes prone to certain injuries. It can also ensure they can tailor a program of training and nutrition to fit their DNA. (AP Photo/David J. Phillip, File)