I thought I would make a new thread. I did a short ride one my regular road bike. I did a warmup and down with 8 all out intervals in the middle. My starting was 133mg/dl I peaked at 190mg/dl. This is about normal for me. Hard sprints or resistance exercise always raised my BG, while LSD (long steady distance) causes it to steadily but slowly drop.
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I think it’s a cool signal we have that non-D’s don’t. It’s a way of knowing where your lactate threshold level is.
I see it at certain intensities when they are performed for long enough.
I test my BG between the reps and I can see it just waiting and waiting, and then on the 3rd or 4th rep - boom! It spikes. Ah, there it is! I’m working now!
Non-D’s don’t have that feedback.
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That differs from my experience. I can spend a long time in zone 3 (of a 7 zone model) and BG only goes down. eg 2 hours at 290 watts and I need to take in 50+ grams of CH an hour. Or a 2.5 hour nordic race that needs 100 grams of sugar. Mid zone 5 and above is different, thats where it starts to even out and spike for me.
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I’m using the 5 zone model, but I digress. Your example seems to suggest that you are fitter than me. That comes as no surprise to me. Because of cancer surgery and grieving I’m just getting some hard workouts again.
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Well I wasn’t specifying a zone number. I was just saying:
“I see it at certain intensities when they are performed for long enough.”
And the intensity is not the only factor, it is also the time spent in that intensity.
For example, going all out for 100 meters might not do a thing. But running a 5k at a much slower pace than the sprint might spike a person.
Another factor is cumulative fatigue. It takes longer for lactate to build up when you have fresh legs vs. when you are already tired.
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That’s stunning to me. Aerobic exercise always makes any insulin in my body super efficient and drops my BG.
Weight training type exercise (anaerobic, I guess) can keep it steady but not really spike it but that might be because I don’t push to the limit or try really heavy weight for fear of injuring myself
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I’m unaware of the Zone 2, 3 etc correlations. But I track my heart rate during ice hockey and have interest in this topic. A sample from last night is below. My max heart rate is around 165 and resting approx 60. The tracker broke the one hour down as “light”, “hard” etc.
Can this be translated into Zones?
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I used this on line calculator.
Now the formula 220-age=max hr is not necessarily true. There are ways to determine your max HR. Resting is best done at night or when you 1st wake up while still lying down.
As an example my resting HR last night was 43, currently sitting in my recliner watching TV HR is 63.
I used your numbers Heart Rate Training Zone Calculator - extramilest
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Sorry I misunderstood your initial statement, I thought you were saying all intensities eventually cause a spike, like some sort of TTE mechanism.
Agreed on fatigue. After months of building fitness (high “ctl’”) its much harder to drive BG down at the same relative intensity than when starting out.
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