Study raises fears of genetically modified athletes(2004, Feb 17) New Scientist, by W. Knight [link]
Another article related to Lee Sweeney's research published in the Journal of Applied Physiology. The article notes that a lot of trainers have been approached by athletes to genetically enhance themselves. One of the interesting points identified in this articl is that genetic modification could result in other bodily imbalance. For example, bigger muscles could damage bone structures.