Definition: "An ergogenic aid is any substance or phenomenon that enhances performance "
Onion extract boosts testosterone level too
We've already written a couple of times about the testosterone boosting effect of onion juice. It has an immediate effect in lab animals, but it's not clear whether the same is so for humans. The human stomach often finds it difficult to take Allium cepa juice, which means that straight supplementation is out of the question. The supplements industry may have an answer however: an animal study published in Acta Poloniae Pharmaceutica by researchers from Indore, India suggests that onion extracts also boost testosterone levels.
Like the Jordanians we wrote about yesterday, the researchers at Smriti College of Pharmaceutical Education in India were looking for a cheap and natural remedy for men suffering from impotency. And like the Jordanians the Indians also did an experiment with male rats, giving them 10 mg paroxetine per kg bodyweight daily.
The Indians made the extract themselves. The information below shows how.
The researchers gave their lab animals 200 mg extract per kg bodyweight per day orally for a week. The human equivalent of this dose would be about 2-3 g extract per day.
At the end of the week, the researchers put sexually receptive females in the males' cage. Then they counted the number of seconds it took for the males to mount the females [Mount Latency], for penetration to occur [Intromission Latency] and for ejaculation to take place [Ejaculation Latency].
The lower the number of seconds, the better the animals' sexual performance. As you can see in the figure below, the extract improved the rats' sexual performance.
The researchers also counted how often the males mounted the females [Mounting Frequency], how often they penetrated the females [Intromission Frequency] and how often they ejaculated [Ejaculation Frequency]. Once again, the onion extract improved the sexual performance of the rats that had been given paroxetine.
Lastly, the researchers also measured the amount of time the rats needed after ejaculation before they were ready for a second round of copulation [Post Ejaculatory Interval]. The 'recovery time' was longer in the paroxetine group than in the control group, but was shortened when onion extract was administered. [Click for figure]
"In conclusion, the present study has demonstrated that Allium cepa bulb ethyl acetate fraction has potential to restore the normal sexual behavior in experimental animal."