Definition: "An ergogenic aid is any substance or phenomenon that enhances performance "
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21.03.2011 |
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The Royal Jelly testosterone factor – part 2
Royal Jelly
The researchers removed ovaries from female rats and thus stopped estradiol production. [OVX] Then they gave the rats feed for 7 weeks that contained 0.5 [RJ1] or 2 percent [RJ2] Royal Jelly. Other groups were given the same quantities of Royal Jelly, but from a preparation that had been pre-treated with a protein-splitting enzyme. [pRJ] The bone-strengthening effect of the supplement is pretty close to that of synthetic estradiol.
Testosterone?
In 1984 endocrinologists at New York Medical College announced that they had indeed found testosterone in Royal Jelly. [Experientia 40 1984 104-6.] But as you can see in the table below, we're talking about nanograms. To make it clear: a nanogram is a millionth of a milligram.
Testosterone surge
The figure is from a recent Egyptian study. [Anim Reprod Sci. 2010 Aug;121(1-2):174-80.] In Egypt rabbit is an important source of meat, but the climate is really to hot for them. The heat makes male rabbits infertile in the summer. In the article the researchers, working at Alexandria University, describe their successful attempt to boost testosterone and sperm production by giving the animals Royal Jelly.
This stuff isn't interesting. It's fascinating: an oral substance that has an ergogenic effect if you take it just once a week. More about this soon.
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