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tribulus_terrestris_l [2015/01/28 07:19]
andreas |
tribulus_terrestris_l [2015/01/28 07:23]
andreas |
| Prostrate annual herb, mat-forming, native to Africa, Asia, and southern Europe; leaves pubescent, short petioled, even-pinnately compound, opposite, leaflets opposite, oblong, pubescent on the lower surface and the midrib of the upper surface; flowers yellow, 8-10 mm wide, solitary from the axils of the small leaves, peduncles 2-15 mm long, petals yellow; fruit 1cm thick, splitting at maturity into 5 segments each with a line of horny processes down the back and 2 lateral spines toward the center. \\ | Prostrate annual herb, mat-forming, native to Africa, Asia, and southern Europe; leaves pubescent, short petioled, even-pinnately compound, opposite, leaflets opposite, oblong, pubescent on the lower surface and the midrib of the upper surface; flowers yellow, 8-10 mm wide, solitary from the axils of the small leaves, peduncles 2-15 mm long, petals yellow; fruit 1cm thick, splitting at maturity into 5 segments each with a line of horny processes down the back and 2 lateral spines toward the center. \\ |
| [[http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200012418]] | [[http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200012418]] |
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| | Aerial parts of Tribulus terrestris contain steroidal saponins like protodioscin, 5,6-dihydroprotodioscin, neoprotodioscin. \\ |
| | [Furostanol saponins from //Tribulus terrestris//., De Combarieu, E., Fuzzati, N., Lovati, M., Mercalli, E., Fitoterapia, vol.74(6), 2003, 583-591] |
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| "Tribulus terrestris is an herbal nutritional supplement that is promoted to produce large gains in strength and lean muscle mass in 5-28 days. 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[middle dot]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." \\ | "Tribulus terrestris is an herbal nutritional supplement that is promoted to produce large gains in strength and lean muscle mass in 5-28 days. 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[middle dot]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." \\ |
