erengel23 wrote:
That's a great study we share openly! This is evidence that our product in fact does NOT use Nitrates as its mechanism to improve performance and recovery
??
It appears that you didn't read the study to which I linked. It demonstrated that ingesting even 100 mg of betanins did not measurably elevate plasma levels. Plasma nitrate/nitrite, OTOH, went up significantly, just as you would expect. Thus, if anything the results of this study would imply the exact opposite of what you stated above.
erengel23 wrote:
The question I raise is - could the Betalains be what is producing these performance and recovery benefits in these beet products such as Beet Elite. There are way more Betalains in these products than AltRed - but just not as bioavailable. Its just a question - which we don't have an answer to, yet!Actually, I think we do, since:
1) the earliest, and several subsequent, studies of dietary nitrate and exercise responses used sodium nitrate, not beet juice/a beet-based supplement; and
2) except for Jones' early work using black currant juice as a placebo, the vast majority of studies of beet juice have used Beet It and compared it to the nitrate- (but not betanin-) depleted placebo they sell to investigators.
Thus, there would seem to be no question that ingestion of nitrate has physiological effects, including on exercise performance. Whether betanins can add to this is what is still up in the air, but based on the study above, it would seem to require either much larger doses, and/or chronic supplementation (see below), to have any effect.
ETA: Here is a study that provided 0.7 mg/kg of betalain (about as much as found in your product) daily for 6 wk. Plasma levels peaked in the low NANAmolar range, whereas urinary concentrations were ~1000x fold greater. Obviously, absorption is an issue (which is why your pee, but not your plasma, turns pink after drinking red beet juice):
https://www.ncbi.nlm.nih.gov/pubmed/29638119
Last edited by:
Andrew Coggan: Apr 17, 18 10:22