Mid 40ºs, light breeze and partly sunny at the Sewanee track. Still T shirt weather. Cold weekend coming up by nice by Monday, should be near 50º.
Hoka trainers on
Stretches, drills, 2x100m
500m - 83.10 (65.22, 17.79 / 30.68, 34.54, 17.79)
3 x 150m w/ 30 sec rest on turf - avg ~ 24 low
The 500m wasn't bad considering the headwind on the second 200m. A little slower than my last one. The tempo 150s were done on the field. Happy that football season is over and those guys are gone from my training space.
Have some home projects to do this weekend and will be off this week. School is over except for finals and one more day of teaching at Sewanee.
Felt a weird back strain doing squats on Tues, but it went away by today. Strange how much more stable my left foot and leg feel compared with my right doing squats.
Blood Glucose
Out of curiosity, bought a blood glucose meter. I was surprised to see how my blood sugar spiked after my workout, apparently that is a normal physical reaction to high intensity training. I measured 177 after my workout, and it dropped rapidly to 99 in about 90 min, then to 96 - 2 hours after dinner. The 'afterburn' lasts hours after a track workout. This may to be the reason my glucose tested a little high in my annual bloodwork. I had done a brief workout that morning. Overall, seems ok so far. Interesting gadget, I like things like this.
Eating pretty well. Chicken and raw broccoli. Dark chocolate and hazelnuts for dessert. Generally low carb.
140.2 lbs after workout.
Interesting blood sugar response. But what you describe as a burn is not a burn. It is a hormonal driven response of your liver to intense exertion dumping glucose into your bloodstream. At the same time there is a insulin response to dampen this effect and the extent of the rise and time to clear is a function not only of exertion but also of your insulin response and sensitivity. This is actually studied quite a bit as there is money in it (sport drinks, etc) and I haven’t seen any studies where it rises above 140 or so. Typically they use a cycle ergo meter to exhaustion and they are usually very fit people but not elite cyclists so their power levels are in the mid 200 watts, not 400 watts or so a competitive cyclist hits so that is one difference. That link you had is a diabetic site so yes there’s can rise a 100 because their insulin response is broken. In any ever 170 blood sugar is damaging no matter the cause. But you only do it a few times a week so these short excursions are probably not an issue but it is still unknown how well your insulin response is working as your data is outside the norm. Still say A1c is they way to go if that is in the normal range no issues. It is a simple blood test should be covered by insurance. Just tell your doc you would like a follow up from the high reading on your physical (leave off that you exercised or he probably won’t comply). It is a great baseline value to establish even if normal as our pancreas eventually wears out. And it looks like you are stressing it having to respond to exercise induced excursions. Another approach is to eat carbs preferably lower GI carbs one hour before your intense workout to get your insulin response going to prevent the excursions and preferably limit the rise to 140 or so which is below the damaging threshold. Check figure 2 in this study. Units are different but the control group peaks at about 140. (C) The glucose infusion group (CI) did not have a rise in (or a very small one) as there was circulating glucose from a external source (Iv drip I think) and a pre insulin response. There are insulin response charts as well. Should avoid 170 spikes if you can. https://journals.physiology.org/doi/full/10.1152/jappl.1998.85.2.511
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