...Yup, 47 total carbs... But I'm allowed to, I think... I'm about to fuel a 2 hour bike ride.
So, my youngest kid (Jeff, he's 14) totally screwed up my 2hr ride... at 40 minutes in I get a phone call that he's forgot his lunch... GAR! So I ended up riding for only 50 minutes, so I could deliver his lunch to him...
I plan on doing some extensive testing (about every 15 minutes) to see how this works... I'm waiting 45 minutes after the meal to begin my ride...
I still tested like crazy though... so here's the breakdown:
1040hrs ate TOAST...
1124hrs 6.5 (117) begin bike ride,
riding hard, maintaining 160-170 heart rate throughout...
1140hrs 5.1 (92)
1150hrs 5.2 (94)
1157hrs 4.1 (74)
1204hrs 4.6 (83)
1211hrs 4.6 (83) then climbed/sprinted for a minute or two
1215hrs 4.3 (77) last test, got off the bike at this point.
1245hrs 6.1 (110) 30 minutes after the bike ride, obviously had a liver dump
My analysis: I burn glucose
quickly... It would appear that shortly after 1140hrs I dropped enough to liver dump, thus the slight climb at 1150.
(Note: I was going to test every 10-15 minutes, but changed my mind after seeing the quick drops and tested more-frequently - I'm pretty sure that considering the speed of glucose consumption that I also burned/dumped prior to the 1140 reading... )
The drop at 1157 shows how fast I burn through the glucose in my bloodstream, and knowing me I dumped seconds after that test.
The very small increase 7 minutes later at 1204 suggests that the liver dumps I'm experiencing during exercise aren't huge... I normally find that my dumps put me up to the low 6's (110-ish), and it seems I can burn through that small dump in 6 or 7 minutes of intense exercise.
This idea of fast consumption and small, frequent liver dumps is backed up by the next test - at 1211, again 7 minutes later, I'm the same 4.6, which would suggest drop and subsequent small dump between 1204 and 1211.
I would also theorize that I dumped very shortly after the 1211 reading, which I burned through during the sprint/climb I did, resulting in the 4.3 final reading...
Getting off the bike at 4.3 (no real cooldown, so very active metabolism) I'd keep burning and probably dump again shortly thereafter.
Being 6.1 (110) now seems pretty normal... slight dump after the low from the exercise, up to where my body seems to like to be lately. (I rarely post above the low-to-mid 6's on my 2hr post-prandials now.)
So that's enough testing for me to realize that I really do need some carbs to fuel me when doing intense riding or endurance cycling, and that I burn through my blood glucose extremely quickly.
And since research also shows that many diabetics have fewer-available glycogen stores, 'bonking' (complete depletion of glycogen stores) could theoretically be achieved earlier than in non-diabetics... thus the need to keep a constant fuel supply will likely be extremely important.
(In fact, I know for me a 'bonk' now only takes two hours for intense exercise... my last two-hour session resulted in a final BG reading of 3.7, tunnel-vision and the need for my kids to make me my post-workout shake... because I was seriously post-workout shaky...)
OK, that's my pseudo-scientific ramblings for the day.
