The effects of Tribulus terrestris on body composition and exercise performance in resistance-trained males.
Antonio J, Uelmen J, Rodriguez R, Earnest C.
Human Performance Laboratory, University of Nebraska, Kearney, NE 68849-3101, USA.
The purpose of this study was to determine the effects of the herbal preparation Tribulus terrestris (tribulus) on body composition and exercise performance in resistance-trained males. Fifteen subjects were randomly assigned to a placebo or tribulus (3.21 mg per kg body weight daily) group. Body weight, body composition, maximal strength, dietary intake, and mood states were determined before and after an 8-week exercise (periodized resistance training) and supplementation period. There were no changes in body weight, percentage fat, total body water, dietary intake, or mood states in either group. Muscle endurance (determined by the maximal number of repetitions at 100-200% of body weight) increased for the bench and leg press exercises in the placebo group (p <.05; bench press +/-28.4%, leg press +/-28.6%), while the tribulus group experienced an increase in leg press strength only (bench press +/-3.1%, not significant; leg press +/-28.6%, p <.05). Supplementation with tribulus does not enhance body composition or exercise performance in resistance-trained males.
For those unsure, I would advise not to take studies as fact. I see all too often biased studies and I am just posting it for whatever, I really am not educated on trib so it could be bunk, or it could even vary by brand (quality and quanity), so take it for whatever it might be worth
I look at studies and weigh them against others, science is kind of like medical science to me, its a practice, because we believe all kinds of things that we later prove untrue, and so on. This is also where empirical evidence comes into play, hopefully Although there is often the placebo effect too.
I recently met with the owner of Optimum Nutrition and had a discussion of Tribulus Terrestris. Although a discussion on the surface of Tribulus Terrestris, I had to shake his hand in the sense of the product being an excellent enhancement in aiding the "other" supplements that I take! Explanation? I may not have one. But I've taken tribulus stand alone and in high dosages and I've noticed a slight change. Sexually? I've noticed a "large" change. Maybe it's a myth to some but I think I've done enough trial and error with this product to know that it works for me up to a certain point.
I've noticed that many of the prohormones and legal test supplements are included so I wonder how much of a true impact it makes? I may have to look toward the guru for a further explanation of this! "Stay tuned" is the only thing I can say!
Sexual Enhancement? Combine that with Goat weed, Yohimibe and Maca.... One can forget Viagra!!!