There's no end in sight to the debate of human growth hormone's performance enhancing properties as new Australian research shows the outlawed drug does little to improve performance. The research, carried out by the Gavan Institute and funded in part by the World Anti-Doping Agency, says that the growth hormone must be accompanied by doses of testosterone if it's to have any impact on performance.
"We were surprised to find that human growth hormone has no effect on muscle mass or sports performance," Professor Ken Ho reported of his findings to a world endocrinology meeting in Canada. "If it had a dramatic affect, we would have found it."
