Alors...
Dans "Anabolics" 9th Edition, William Llewellyn déconseille l'utilisation des AI (Arimidex et compagnie) et dans le même temps les mentionne dans le listing des cures qu'il suggère, cures light de chez light soit dit en passant. Je n'ai pas compris cette apparente contradiction en première lecture sauf si l'on doit comprendre qu'il les suggèrent SI nécessaire (début de gyno, trop de flotte, etc)
Notre ami William justifie sa position en expliquant que les oestro participent positivement à un certain nombre de choses et concourent à la bonne marche d'une construction musculaire.
Ok, ok.... SAUF QUE je n'ai jamais lu une seule étude qui portait aux nues l'impact des oestrogènes chez l'homme dans des proportions SUPRAphysiologique ! Il faut garder des oestrogènes évidemment, il ne s'agit pas de les supprimer totalement ce qui serait très mauvais, mais de là à "laisser courir"...
L'idée qui court depuis longtemps serait que l'utilistion d'un AI comme l'arimidex nuirait aux gains... Pour en avoir fait même-même l'expérience et après en avoir parlé avec d'autres, je n'y crois absolument pas.
Je ne vais pas paraphraser ce que dit notre ami Mike Arnold dans son post du 27 janvier 2012 sur un des forums de Muscular Development, mais les choses paraissent claires.
Ci-dessous un petit copier-coller de son post. Pour ceux qui souhaitent avoir le lien direct :
http://forums.musculardevelopment.com/showthread.php/121575-Safest-AI
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Regarding the impairment of gains when using an AI...that isn't going to happen. There is absolutely zero reserach to suggest that supraphysiological levels of estro are beneficial for muscle growth. In fact, there is reserach to suggest that keeping estro levels within the normal male range is one's best bet for both gains and health. Also, you do NOT have to worry about "crushing' your estro with an AI, even if taking a moster dose. Recent university reserach on AI's was conducted using men as the sole reserach poulation. This was the first study in which AI's were tested on men...all previous studies involved women. All of our most popular AI's were used in the study, including Aromasin, Letro, and A-dex. The results were a bit unexpected and keep in mind that a pretty large number of test subjects were used, so it was not by chance...the results are reliable.
It was shown that even when using large doses of all of these AI's not a single one of them was able to lower estrogen more than 58-60%! Also of importance is the fact that these men were not using AAS, which means that their estrogen levels would've been much lower than men using aromatizable steroids. It is speculated that the reason AI's are so much less effective in men than in women is because men have much higher levels of androgens. Regardless, the results are clear...and it has been shown that the previous theory, which suggested that men would "crush" their estro levels and inhibit their gains when using AI's, is flat out incorrect.
It gets even more interesting when we look at male AAS users. In males using aromatizable drugs, due to the much higher levels of estrogen, it is literally impossible to lower estrogen levels to the point where it could harm gains when using AI's, even when using what are considered high dosages. The only thing that will change when using an AI while on-cycle is that you won't hold as much water. Muscle growth will not be hindered...water retention will. In fact, keeping estro in a lower range will result in higher levels of free circulating AAS...potentially resulting in greater amounts of muscle growth. When estro levels are high, testosterone and many other AAS become bound and therefore are unable to attach to androgen receptors. This means the AAS cannot stimulate either androgen receptor mediated muscle growth or muscle growth through non-genomic mehcanisms. Basically, we do NOT want a larger amount of our anabolic hormones to become bound and inactive...we want them free and able to influence muscle growth. High estrogen levels prevent this from occuring to an optimal degree.
In the referenced study, we see that even when using a full 50 mg of aromasin per day, estro levels were only decreased an average of 60%. When using 2.5 mg of letro per day, they only went down 58%...and when using A-dex (I fogort the dose), they only went down like 47%. Bottom line...when using aromatizable drugs, we should be using an AI.
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en tout cas je l'aurais pris pendant la PCT
