All last week I discovered that my established rules for coping with exercise were failing. Until then I had always experienced significant falls in my blood glucose after cycling to work, so had reduced my pre breakfast bolus and reserved some of my lunch to eat without a bolus just before the ride home. That seemed to work, then last week it all changed and I was getting big rises on the bike ride. Aha! I thought, perhaps I am now so much fitter that the exercise now has less impact. So yesterday I set off on a ride after my normal bolus. At halfway things were fine, 4.5 mmols/l, a small drop, we had taken a Tortuga rum cake to share in the park (a real treat which I feel I can only enjoy after significant exercise, about 27g carbs) so I had a reduced bolus (50%) as we were then planning a short flat ride to a restaurant. Last time I think I ate it without a bolus but then immediately rode 9 miles home, starting with a hill. Before dinner sugars were up to 10.8 so I used my normal post exercise ratio for the meal with a tiny correction. Big mistake. About two thirds of the way home I felt low, stopped to check: 2.7, and then ended up walking most of the way home as it took half an hour to come back up to safe riding levels.
I'm guessing that it is something to do with the pace and duration of the ride. It was 17 miles in total and a very leisurely pace, whereas for work it's 4 miles, 22 minutes each way. I am now wondering what to do when I go back to work on Thursday. It certainly keeps the brain active, this condition!
I'm guessing that it is something to do with the pace and duration of the ride. It was 17 miles in total and a very leisurely pace, whereas for work it's 4 miles, 22 minutes each way. I am now wondering what to do when I go back to work on Thursday. It certainly keeps the brain active, this condition!