I found this article and thought it was probabbly a vegetarian talking out of his ass, but wanted some opinions. I love animals and if Soy was in fact superior to my 40 egg whites 3 egg yolks and 400g of beef a day I would happily make the switch
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Soy Protein Isolate benefits for Bodybuilders
Animal research suggests some great advantages of using soy protein isolate as a bodybuilding supplement. Research has shown that the isoflavone daidzein found in soy-protein isolate might have a gender specific normalizing effect on sex-hormone production. Lab animals experienced testosterone and growth hormone excretion as well as muscle growth in males, while the female animals experienced a decrease in these hormones and fat loss.
Daidzein is a key isoflavone found in soy that acts as a potent phyto-estrogen. It is structurally a very weak "pseudo-estrogen" (about 1000 times weaker than the body's primary estrogen estradiol). This is good news to the bodybuilder because weak estrogens like daidzein will compete with stronger estrogens like estradiol for available receptor sites to "bind" to. By binding to the receptor sites daidzein then "blocks" the stronger estrogens from binding to and activating receptor sites. With the daidzein isolflavone attached, estrogen receptor sites remain inactive. This inactivity further minimizes the negative effects of estrogen in the body. Many researchers believe this effect is the reason soy protein is linked to a reduction in the risk for many forms of breast, endometrial, and prostate cancer. This mechanism works similarly to the prescription drug Nolvadex (tamoxifen citrate)--an anti-estrogen staple in the bodybuilding community.
Research also indicates that the soy-protein isolates may reduce nitrogen loss and keep you in a positive nitrogen balance to better facilitate muscle growth. The human body can only repair and build muscles when it has a positive nitrogen balance.
Of particular interest to the bodybuilder is Soy Isolates high concentration of the amino acids glutamine and arginine. These two aminos are extremely important to a body builder for their ability to release growth hormone, aid in immune system functions, and for their ability to speed muscle cell recovery.
Glutamine: Which protein has the most.
Isn't the claim true about whey having significantly higher amounts of glutamine and BCAAs? Sorry, but NO! Whey does have the highest amounts of BCAAs of any protein but NOT SIGNIFICANTLY higher amounts. When it comes to the amounts of glutamine, soy beats whey hands down. For every 100 grams of protein, whey has 20.1 grams of BCAAs and 4.9 grams of glutamine. Maybe to your surprise, soy has 18.1 grams of BCAAs and a whopping 10.5 grams of glutamine! Again, we have been lied to and deceived.
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so what'dya think? the glutamine levels and nitrogen balances sound great. The much weaker estrogen like molecule competing for receptors with estrogens sounds amazing as well and 'seems' to have some logic behind it...
but im skeptical... let's see opinions and get some new non-steroid based knowledge out on this forum!
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Soy Protein Isolate benefits for Bodybuilders
Animal research suggests some great advantages of using soy protein isolate as a bodybuilding supplement. Research has shown that the isoflavone daidzein found in soy-protein isolate might have a gender specific normalizing effect on sex-hormone production. Lab animals experienced testosterone and growth hormone excretion as well as muscle growth in males, while the female animals experienced a decrease in these hormones and fat loss.
Daidzein is a key isoflavone found in soy that acts as a potent phyto-estrogen. It is structurally a very weak "pseudo-estrogen" (about 1000 times weaker than the body's primary estrogen estradiol). This is good news to the bodybuilder because weak estrogens like daidzein will compete with stronger estrogens like estradiol for available receptor sites to "bind" to. By binding to the receptor sites daidzein then "blocks" the stronger estrogens from binding to and activating receptor sites. With the daidzein isolflavone attached, estrogen receptor sites remain inactive. This inactivity further minimizes the negative effects of estrogen in the body. Many researchers believe this effect is the reason soy protein is linked to a reduction in the risk for many forms of breast, endometrial, and prostate cancer. This mechanism works similarly to the prescription drug Nolvadex (tamoxifen citrate)--an anti-estrogen staple in the bodybuilding community.
Research also indicates that the soy-protein isolates may reduce nitrogen loss and keep you in a positive nitrogen balance to better facilitate muscle growth. The human body can only repair and build muscles when it has a positive nitrogen balance.
Of particular interest to the bodybuilder is Soy Isolates high concentration of the amino acids glutamine and arginine. These two aminos are extremely important to a body builder for their ability to release growth hormone, aid in immune system functions, and for their ability to speed muscle cell recovery.
Glutamine: Which protein has the most.
Isn't the claim true about whey having significantly higher amounts of glutamine and BCAAs? Sorry, but NO! Whey does have the highest amounts of BCAAs of any protein but NOT SIGNIFICANTLY higher amounts. When it comes to the amounts of glutamine, soy beats whey hands down. For every 100 grams of protein, whey has 20.1 grams of BCAAs and 4.9 grams of glutamine. Maybe to your surprise, soy has 18.1 grams of BCAAs and a whopping 10.5 grams of glutamine! Again, we have been lied to and deceived.
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so what'dya think? the glutamine levels and nitrogen balances sound great. The much weaker estrogen like molecule competing for receptors with estrogens sounds amazing as well and 'seems' to have some logic behind it...
but im skeptical... let's see opinions and get some new non-steroid based knowledge out on this forum!