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According to the results of the study funded by the World Anti-Doping Agency, ----.
Many athletes credit drugs with improving their
performance, but some of them may want to thank their
brain instead. Mounting evidence suggests that the
boost from human growth hormone (HGH), an
increasingly popular doping drug, might be caused by
the placebo effect. In a new double-blind trial funded by
the World Anti-Doping Agency, in which neither
researchers nor participants knew who was receiving
HGH and who was taking a placebo, the researchers
asked participants to guess whether or not they were on
the real drug. Then they examined the results of the
group who guessed that they were getting HGH when, in
fact, they had received a placebo. That group improved
at four fitness tests measuring strength, endurance,
power and sprint capacity. The study participants who
guessed correctly that they were taking a placebo did
not improve, according to preliminary results presented
at the Society for Endocrinology meeting in June 2011.
“The finding really shows the power of the mind” said
Ken Ho, an endocrinologist at the Garvan Institute in
Sydney, Australia, who led the study. She maintains that
many athletes are reaping the benefits of the placebo
effect, without knowing whether what they are taking is
beneficial or not.