Blood sugar & exercise

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Blood sugar & exercise


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Old 10-07-2014, 15:39   #1
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Default Blood sugar & exercise

I was wondering what peoples' experience has been with their blood sugar after a strenuous workout.

Last night, for the first time since starting LCHF, I went to a really tough one hour exercise class. I had a snack of cheese and optimist crackers and some hwc in tea about an hour before the class.

Right before class, I was at 112. Got home from the workout and it was 160!

I guess I need to eat more before my workout? Any suggestions for good snacks before going? I don't like to eat too much before, but at this point I would trade feeling kinda of nauseous during the workout for keeping my levels down.

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Old 10-07-2014, 15:59   #2
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What are your levels otherwise, during the day. If you are carrying ample glycogen stores, the liver will tend to dump if it senses that you are going low. Did you continue to monitor your BG till much later. Probably it came down very nicely later.

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Old 10-07-2014, 16:52   #3
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If you are snacking before evening exercise, you need to add protein and more calories ( fat) to sustain an intense level of exercise an hour before you hit the gym. There is a fine balance and you need to find it. Be sure to drink an electrolyte drink (0 carbs) to keep hydrated. Normally, it is not needed for an hour of exercise, but it sounds like you really pushed yourself.

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Old 10-07-2014, 21:56   #4
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I get the same sort of thing happening but not quite as dramatic a rise. I do those RPM cycling classes for a workout before breakfast. This morning I had the following results which are pretty typical for me .
Out of bed - 5.8 (104)
After class (before breakfast) - 6.8 (122)
As SKB implied though, my numbers fall away, down to normal for the rest of the day fairly quickly though.
On the other hand if I go walking my numbers drop away and I don't see that rise.

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Old 10-07-2014, 23:54   #5
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SKB - I did the workout in the evening, but did not test later that evening. My morning BG was 129, which has been typical recently. And then mid-morning it has been getting as high as 140 and then drops to low 100's in the afternoon. I just haven't seen 160 is awhile.

Cycle - I will definitely eat more and look for an electrolyte drink. I think I thought those were pretty much off the menu, assuming they'd be full of sugar/carbs.

Harry - yes, my typical exercise is a steady walk and that always seems to lower my numbers. Just trying to bump up the exercise though and thought this would be a good thing!

This diabetes thing is a never-ending journey!

Thanks all for your input.

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Old 10-08-2014, 08:27   #6
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Quote:
Originally Posted by auntiekris View Post
Harry - yes, my typical exercise is a steady walk and that always seems to lower my numbers. Just trying to bump up the exercise though and thought this would be a good thing!
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As SKB implied though, my numbers fall away, down to normal for the rest of the day fairly quickly though.
On the other hand if I go walking my numbers drop away and I don't see that rise.
On another thread some time ago it was discussed that aerobic exercise tends to lower BG, & anerobic exercise tends to increase it. In the short term, and assuming liver glycogen levels are not very high.

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Old 10-14-2014, 21:00   #7
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Quote:
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Cycle - I will definitely eat more and look for an electrolyte drink. I think I thought those were pretty much off the menu, assuming they'd be full of sugar/carbs.
May want to try a PH balancing powder instead of a sweetened electrolyte drink. These normally have a correctly balanced sodium and potassium mixture. Don't think this will affect glucose levels due to exercise but I don't know for certain.

Search for "hepatic insulin resistance". It may give you clues about managing elevated blood glucose levels because of exercise.

TL;DR - First and second stage insulin response by the liver is impaired. As a result glucose levels may be elevated for up to two hours after strenuous exercise.

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