Exercise Wreaking Havoc on Glucose

Although details vary today’s exercise experience has become typical. My glucose wouldn’t rise as expected ahead of planned afternoon exercise today. Dumped in a total of about 50 g carbs before glucose finally went above 110 by which time it was after 6 PM. So I went ahead on my walk and glucose drops below 100 so more glucose in and take another 30 g carbs and still bottom out in low 60s. After exercise glucose goes into 130s/140s and incredibly stubborn. No or temporary drop from more insulin and will be up late battling highs.

This is new to me as was previously limited by back pain and activitiy restrictions recently lifted after lumar spine surgery.

You are in a roller coaster over correcting both sides.
I suggest waiting until your sugar is stable for a few hours then start exercise and take a very small amount of glucose to correct.
Or a small amount of insulin

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One possibility to explore would be that you’re using basal to control your BG too much and that you’ll want to rebalance with more bolus for food and less basal throughout the day. Basal can be more reliable but it can also push you to eat when you wouldn’t otherwise. You could experiment with small changes at first.

Also, I’m a fan of powdered dextrose mixed with water if your BG is dropping during exercise. It raises BG quickly without a long tail. Sometimes, during even moderate exercise, it seems like some carbs don’t get digested until you stop exercising.

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I have found that exercising first thing in the morning works best for me. Little/no insulin on board really helps, and then I don’t need to eat much, if anything, before I work out.

Checking the Glycemic Index (GI) for pre-exercise carbs, carbs were low to moderate-low except maybe sugar added to dried pineapple. Higher GI carbs lasted longer into exercise today, so need to refine that and when to add carbs during exercise. Shutting down basal (0.2 units/hr) would help a little, if I can remember. Then can hone in on after exercise rebound and roller coaster.

Same for me. I workout first thing in the morning whenever possible. I can take my dog for a 3 mile walk or go to a somewhat intense class at the gym and not have to worry about my blood sugar. When I do these things at a different time of day, I have to worry about what my blood sugar is doing/ what I’m eating/how much insulin I’m taking for a few hours before and during the workout.

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My body changes and reacts to exercise differently according to how, “in shape/out of shape,” I am. You may be experiencing a different pattern in how your physiology reacts to exercise because of downtime after recent surgery. You might have to start kinda fresh in evaluating it’s reaction to walking. The pattern may change again after you get up and moving for a few weeks and establish a new baseline.

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