I’m back with some results!
Not exactly the same circumstances as when doing fasted cardio, but I wanted to test if BCAA’s caused an increase in blood glucose levels. I’ll be doing some more tests soon on this.
I fasted for 18-20 hours, then took a reading. My blood glucose levels at control time “T” was 4.7 mmol/l. Then I ingested 10 grams of BCAA’s.
T+22 minutes read 4.4mmol/l (22 minutes after ingesting the BCAA’s)
T+30 read 4.3 mmol/l. (30 minutes after ingesting the BCAA’s)
This shows me that BCAA’s does not cause a rise in blood glucose levels, and therefore doesn’t intefere with the (claimed) increased fatburning effect of fasted cardio.
But, with every “scientific” expermient, I have to be able to replicate it to be sure. One possible source of error could be the time of the first reading after ingesting the BCAA’s. There is a possibility that they are absorbed by the body fasted than 20 minutes after.
Still, if they caused an blood glucose rise for only 10 minutes, it wouldn’t be much of a problem.
Note: the strips used for the readings are plasma-calibrated.[/quote]
Because there aren’t calories, and if BCAAs caused insulin release, I’d expect a drop in blood sugar. Insulin driving blood sugar into cells without any coming in. You may still be releasing insulin which should dampen fat burning, despite glucose levels.
But I’m still trying to learn this stuff, so I could be completely off base.[/quote]
I see where you are coming from, and I have also been wondering the same thing. I did, however, take a reading 1 hour and 10 minutes after eating my first meal in 24 hours, which showed 5.0 mmol/l. My control test showed 4.2 mmol/l.
As I see it, the insulin should come as a response to a rise in blood glucose levels, which would then lower it back to normal.
But, I’m in no way an expert on this, which is also why I can’t explain the decrease in blood sugar 20-30 mins after BCAA consumption. I’ll try out a similiar experiment again next monday, possible also some mornings in the weekend, to see if I get the same results.
I’ve also been wondering; how many mmol/l glucose in the blood is neccesary to create an significant insulin rise?
I don’t think BCAAs are supposed to stimulate insulin by raising glucose levels. I don’t know that monitoring glucose is telling you what you want to know.