Human Growth Hormone Doesn't Improve Athletic Performance
By Amanda Gardner, HealthDay Reporter
posted: 17 March 2008 05:24 pm ET
(HealthDay News) -- In addition to ruining promising sports careers, human growth hormone may not even enhance athletic performance as it is purported to do.
An analysis of existing literature on human growth hormone found that while lean body mass increased, exercise capacity did not.
The findings add an ironic twist to the current controversy surrounding baseball greats Roger Clemens, Andy Pettitte and others.
Clemens has denied under oath using steroids and growth hormone, while Pettitte has admitted using human growth hormone to recover from injuries.
Last December, former U.S. Senate Majority Leader George Mitchell released a report affirming widespread use of performance-enhancing drugs in baseball.
"Our findings are consistent with the Mitchell report," said Dr. Hau Liu, lead author of the new analysis, which will be published in the March 17 online issue of the Annals of Internal Medicine.
The authors, however, warned of the difficulties of comparing use of growth hormone in a controlled study and use in the "real world."
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