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Parti da una ottima base e condizione Matteo, molto bene direi!
Hai fatto gran progressi da quando ti vediamo.....vedrai che con caro Fabio arriverai a strappare dei bei risultati!
Ecco....le pose.......lavoraci parecchio già da ora.......
Dato che mi viene spesso chiesto un parere in merito, questa settimana già un paio di volte mi hanno parlato di zinco, in particolare di ZMA e testo......sebbene vi sia una certa correlazione tra la produzione di testosterone e questo minerale, la sua influenza a livello di produzione endogena è pressochè pari a 0. Trovata commerciale che tirò fuori Vic Conte prima dei casini legali, e poi a seguire tante aziende......la carenza di zinco in soggetti problematici è un'altra questione, ma che nulla ha a che fare con la fama di certi che lo danno come booster di testosterone.
Serum testosterone and urinary excretion of steroid hormone metabolites after administration of a high-dose zinc supplement.
Eur J Clin Nutr. 2007 Sep 19.
Objectives:To investigate whether the administration of the zinc-containing nutritional supplement ZMA causes an increase of serum testosterone levels, which is an often claimed effect in advertising for such products; to monitor the urinary excretion of testosterone and selected steroid hormone metabolites to detect potential changes in the excretion patterns of ZMA users.Subjects:Fourteen healthy, regularly exercising men aged 22-33 years with a baseline zinc intake between 11.9 and 23.2 mg day(-1) prior to the study.Results:Supplementation of ZMA significantly increased serum zinc (P=0.031) and urinary zinc excretion (P=0.035). Urinary pH (P=0.011) and urine flow (P=0.045) were also elevated in the subjects using ZMA. No significant changes in serum total and serum free testosterone were observed in response to ZMA use. Also, the urinary excretion pattern of testosterone metabolites was not significantly altered in ZMA users.Conclusions:The present data suggest that the use of ZMA has no significant effects regarding serum testosterone levels and the metabolism of testosterone in subjects who consume a zinc-sufficient diet.
poi ci metto anche questo: Effects of Zinc Magnesium Aspartate (ZMA) Supplementation on Training Adaptations and Markers of Anabolism and Catabolism
Colin D Wilborn1, Chad M Kerksick1, Bill I Campbell1, Lem W Taylor1, Brandon M Marcello1, Christopher J Rasmussen1, Mike C Greenwood1, Anthony Almada2 and Richard B Kreider1
1 Exercise & Sport Nutrition Lab, Baylor University, Waco, TX
2 IMAGINutrition, Laguna Nigel, CA
Abstract
This study examined whether supplementing the diet with a commercial supplement containing zinc magnesium aspartate (ZMA) during training affects zinc and magnesium status, anabolic and catabolic hormone profiles, and/or training adaptations. Forty-two resistance trained males (27 ± 9 yrs; 178 ± 8 cm, 85 ± 15 kg, 18.6 ± 6% body fat) were matched according to fat free mass and randomly assigned to ingest in a double blind manner either a dextrose placebo (P) or ZMA 30–60 minutes prior to going to sleep during 8-weeks of standardized resistance-training. Subjects completed testing sessions at 0, 4, and 8 weeks that included body composition assessment as determined by dual energy X-ray absorptiometry, 1-RM and muscular endurance tests on the bench and leg press, a Wingate anaerobic power test, and blood analysis to assess anabolic/catabolic status as well as markers of health. Data were analyzed using repeated measures ANOVA. Results indicated that ZMA supplementation non-significantly increased serum zinc levels by 11 – 17% (p = 0.12). However, no significant differences were observed between groups in anabolic or catabolic hormone status, body composition, 1-RM bench press and leg press, upper or lower body muscular endurance, or cycling anaerobic capacity. Results indicate that ZMA supplementation during training does not appear to enhance training adaptations in resistance trained populations.
Proprietà benefiche questo blend le possono anche avere, ma nulla di sensibilmente degno di ciò che si spende.......
Parti da una ottima base e condizione Matteo, molto bene direi!
Hai fatto gran progressi da quando ti vediamo.....vedrai che con caro Fabio arriverai a strappare dei bei risultati!
Ecco....le pose.......lavoraci parecchio già da ora.......
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