could it be possible to gentically enhance a human (without steroids) to perform better at sport?

Question: could it be possible to gentically enhance a human (without steroids) to perform better at sport?
- Keywords:
  gene,
  genetic modification,
  gentically,
  human,
  perform,
  performance
Asked by jwhite to Audra, Fiona, Gavin, Justin, Steve on 20 Mar 2012.
- Gavin Devereux answered on 20 Mar 2012:
  
  Hello.
  
  It probably could be done. There’s already a term for it: genetic doping. Some people worry this will be the future of doping in sport. It’s an incredibly complex topic area.
  
  I suppose those they’d be called genetically modified athletes. Prince Charles wouldn’t like it 😀 He’d campaign for organic athletes!

Question: could it be possible to gentically enhance a human (without steroids) to perform better at sport?