Imagine someone who has the speed of Usain Bolt, the leap of NBA star LeBron James and the stamina of swimmer Sun Yang - he or she would be an athlete virtually unbeatable.

Yet the possibility is not so far-fetched, as scientists warn the development of gene technology poses a serious challenge to anti-doping efforts.

Gene doping is the non-therapeutic use of DNA to enhance performance, and according to experts, has the potential to create super athletes.