tribulus not effective at tested dose

[liftsiron]

posted by jboldman

tribulus not effective at tested dose

J Strength Cond Res. 2007 May;21(2):348-53. Links
The Effect of Five Weeks of Tribulus terrestris Supplementation on Muscle Strength and Body Composition During Preseason Training in Elite Rugby League Players.Rogerson S, Riches CJ, Jennings C, Weatherby RP, Meir RA, Marshall-Gradisnik SM.
Rogerson, S., C.J. Riches, C. Jennings, R.P. Weatherby, R.A. Meir, and S.M. Marshall-Gradisnik. The effect of five weeks of Tribulus terrestris supplementation on muscle strength and body composition during preseason training in elite rugby league players. J. Strength Cond. Res. 21(2):348-353. 2007.- Tribulus terrestris is an herbal nutritional supplement that is promoted to produce large gains in strength and lean muscle mass in 5-28 days (15, 18). Although some manufacturers claim T. terrestris will not lead to a positive drug test, others have suggested that T. terrestris may increase the urinary testosterone/epitestosterone (T/E) ratio, which may place athletes at risk of a positive drug test. The purpose of the study was to determine the effect of T. terrestris on strength, fat free mass, and the urinary T/E ratio during 5 weeks of preseason training in elite rugby league players. Twenty-two Australian elite male rugby league players (mean +/- SD; age = 19.8 +/- 2.9 years; weight = 88.0 +/- 9.5 kg) were match-paired and randomly assigned in a double-blind manner to either a T. terrestris (n = 11) or placebo (n = 11) group. All subjects performed structured heavy resistance training as part of the club's preseason preparations. A T. terrestris extract (450 mg.d(-1)) or placebo capsules were consumed once daily for 5 weeks. Muscular strength, body composition, and the urinary T/E ratio were monitored prior to and after supplementation. After 5 weeks of training, strength and fat free mass increased significantly without any between-group differences. No between-group differences were noted in the urinary T/E ratio. It was concluded that T. terrestris did not produce the large gains in strength or lean muscle mass that many manufacturers claim can be experienced within 5-28 days. Furthermore, T. terrestris did not alter the urinary T/E ratio and would not place an athlete at risk of testing positive based on the World Anti-Doping Agency's urinary T/E ratio limit of 4:1.

	Supps

[powerlifter]

Interesting....but the dose was only 450mg ED right ? - I believe you need 2-3 grams to get the LH stimulation etc- that's what I need during cycle to help keep the boys full

[liftsiron]

Originally Posted by powerlifter

Interesting....but the dose was only 450mg ED right ? - I believe you need 2-3 grams to get the LH stimulation etc- that's what I need during cycle to help keep the boys full

That's a good point the dose was lower that what most use. Personally I use 10-20mgs of nolva at times during cycle and for me that works wonders at keeping my boys up as well as seem to increase benefit from cycle.

	Nolva

[powerrack]

I react well to about 2 grams of trib a day, I don't have tests to prove it ,just going by feel and results in the gym.

[scottyspiked]

I have used tribulus many tiems and never noticed anythign. I personally think its a waste of money.

[MadMax209]

What are you expecting from tribulus using? It will definitely not bring any muscle or strenght gains, but works well for sex-drive, energy for training, I personally find it usefull after cycle, when your testosterone level is decreased. But definitely in higher doses, about 6-8g per day.

	energy

[scottyspiked]

Tribulus sucks. I have used it many times..... like this time and being shut down with nolvadex and it doesnt help I think tribulus is a waste

	Nolva

[1fitdrillsgt]

nice post good info all around