Guest guest Posted July 18, 2001 Report Share Posted July 18, 2001 > From: strength_coach@... > > First I want to assure you that I didn't buy any stock share of > Tribulus producing companies > The study at: > http://www.tribestan.com/co_docs/424_007.html > seems to show an increase of some hormones (LH, T, FSH and Estradiol). The biggest problem with this study is that it is not double-blind nor is it placebo controlled. This seriously weakens the study. Also, the authors state that testosterone concentration was increased three-fold, but that's not what it looks like when you look at the numbers. I also don't understand their units for testosterone concentration. They say (ng %), which doesn't make sense to me. T concentrations are usually reported as ng per some volume (like ng/ml). Finally, all of the observed hormonal changes were well within normal physiological ranges, so it remains to be established whether the small changes observed in this study are physiologically significant. There is a difference between statistical significance and physiological significance. Krieger Graduate Assistant, Exercise Science Washington State University Webmaster, WSU Strength and Conditioning http://www.wsu.edu/~strength Science Editor, Pure Power Magazine http://www.purepowermag.com jkrieger@... Quote Link to comment Share on other sites More sharing options...
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