Liver Dump, Exercise and Blood Glucose Test

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Liver Dump, Exercise and Blood Glucose Test


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Old 03-09-2011, 18:05   #1
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Default Liver Dump, Exercise and Blood Glucose Test

As most of you know, I'm a Type 2 managing through diet, exercise and Metformin (ER). My biggest complaint is liver dumping...

This is just some thoughts/reports on my testing/observance of liver dump, eating, exercise, etc. based solely on ME. I'm posting this more because writing this down helps me think about it and hopefully find the best way to manage my sugars. Anyway...

For me (from my own testing/observance) I get a liver-dump (additional glucose released into the bloodstream by my liver) for two reasons: 1) my BG drops below 4.5 mmoL/L (81 on the US scale), or; 2) I've gone without food for 4hrs (regardless of the BG reading.)

For the past two weeks my liver dump raises my BG levels by EXACTLY 2.0 mmoL/L (36 points on US scale). I've observed that my normal nightly fasting readings while low-carbing drop to about 4.2 (75) at the lowest, and my morning dump puts me to 6.1 or 6.2 (about 110) every day. My pre-meal readings, regardless of what they are (typically between 5.5 and 6.5 though) will jump the same amount (2.0 mmoL/L) if I delay my meal >4hrs since previous.

The pre-meal dump is the worst for me (and thus I try to avoid it), because once I DO eat, the post-meal BG climb (even from a low-carb meal) can put me well above the 7.8 (140) danger mark.

For example, last night's test I tested 5.7 (102) just prior to supper, then delayed eating another 1/2 hour. Tested again and was 7.6 (138) without yet eating. I then ate my very low-carb meal (Caesar salad, no-carb full-fat dressing, no croutons, leftover fajitas without a tortilla) and 1hr later posted a 9.4 (170) and at 2hrs was 8.6 (155). Had I NOT dumped prior to the meal my own testing shows I would have peaked around mid 7's (135-ish) and 2-hr post would be mid 6's (<120). Those are obviously the numbers I prefer.

So today I decided to do an exercise test with numerous blood tests in there. I normally do NOT exercise more than 20-25 minutes at a time due to pain from osteoarthritis, but decided to take an NSAID just before and 'suck it up' in the name of 'science' (oh I use that term loosely...)

I tested at 7:00am, 6.2mmoL/L (111) and immediately ate breakfast.

I was 7.3 (131) one hour after my breakfast (8:00am) which was 2 eggs, 2 strips bacon, one piece of sprouted grain bread with a little natural peanut butter and some no-sugar jam. I measure my intake carefully, and this meal was:

Calories 525
Carbs (g) 21 (total)
Net Carbs 16 (less fibre)
Protein (g) 24
Fat (g) 37

I hopped on the exercise bike immediately after testing (8:00am) and warmed up for two minutes, then began a moderate-intensity ride. After 10 minutes I cranked up the tension, stood and pushed like a madman for 2 minutes, then went easy for 2 minutes, then back to normal. 5 minutes later I did it again... Then I started to have that 'feeling' I get when I think I'm getting low.

At 8:20 I did another quick reading (quick wash of hands, no soap, towel-dry, then test) and was at 4.4 (79) which is typical of 20 minutes of moderate for me. I jumped back on the bike and kept going. I felt like crap for a couple of minutes, but soon the riding was going fine again. I did another quick interval of high intensity after a bit and then went easy for 2 minutes.

At 8:30 I took another 30 seconds and tested. I was back up to 6.4 (115). Hopped back on the bike, more interval training followed.

At 8:42 I started noticing I was rocking a bit on the bike, feeling slightly dizzy and nauseous. I jumped off and did a quick test which returned a 4.2 (75) and then got back on the bike.

By 8:47 I felt better again, like I had a second-wind ... so I rode moderately until 8:50.

8:50 I tested at 6.5 (117). I climbed back on quick and kept my moderate pace for 2 minutes... Then at 8:52 I stood up and pushed HARD. I mean, REALLY REALLY HARD. To the point of a massive side-ache, burning legs which actually gave out on me and forced me to sit (more collapse) back on the bike and turn the tension way down. I spent about 5 minutes cooling down and got off the bike at 8:57.

Tested immediately and was up to 7.3 (131). It's my theory that the moderate-intensity and intervals dumps about 2.0mmoL/L into my system, but that the extremely HIGH intensity I did near the end signaled the liver to dump even more. It would make sense that the homeostasis effect tries to balance out the blood glucose level based on the output of your workload, and seems to be the case in this test.

Interestingly, one hour AFTER I finished the ride, at 9:57 I tested at 7.1 (128) which isn't much of a reduction... I normally drop much more than that in an hour without food... I would've thought that the increased metabolic effect of exercise continues to burn the blood glucose... I can only guess that one of three things is happening:

1) Because of the intensity and increased metabolic rate, my liver is continuing to secrete glucose, or;
2) My insulin response is insufficient to handle the glucose secreted, (basically 3 dumps in an hour) or;
3) My insulin resistance is somehow increased after exercise

Any thoughts? (other that I'm kinda crazy...I know that.)

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47 yr. old Male
Alberta, Canada

Dx'd T2 Dec 19, 2010 - Fasting BG: 14.8 (267), A1c: 12.1, Wt: 290lb (over 320lbs at my heaviest)

As of Apr 23, 2013: 14-day Avg Fasting BG: 4.7 (85), A1c (Dec21): 5.1%, Stats: 230lb, 6'3" now with 37" waist

Low-Carb (Usually < 45-60g per day on a 3,000+ calories daily diet)

On Metformin only for meds. Exercise 6 days a week.
Supplement only with: Men's Multi-Vitamin, Vitamin D 2000iu/day, Aspirin 81mg, Cinnamon Extract and Fish Oil all 1x per day


Last edited by beefy; 03-09-2011 at 18:09.
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Old 03-09-2011, 18:21   #2
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Bah... just realized that I'm sitting at a 7.1 (128) and it's time for my next meal. Argh. Hopefully I don't spike much off this one, LOL.

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47 yr. old Male
Alberta, Canada

Dx'd T2 Dec 19, 2010 - Fasting BG: 14.8 (267), A1c: 12.1, Wt: 290lb (over 320lbs at my heaviest)

As of Apr 23, 2013: 14-day Avg Fasting BG: 4.7 (85), A1c (Dec21): 5.1%, Stats: 230lb, 6'3" now with 37" waist

Low-Carb (Usually < 45-60g per day on a 3,000+ calories daily diet)

On Metformin only for meds. Exercise 6 days a week.
Supplement only with: Men's Multi-Vitamin, Vitamin D 2000iu/day, Aspirin 81mg, Cinnamon Extract and Fish Oil all 1x per day

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Old 03-09-2011, 19:24   #3
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Quote:
Originally Posted by beefy View Post
1) Because of the intensity and increased metabolic rate, my liver is continuing to secrete glucose, or;
2) My insulin response is insufficient to handle the glucose secreted, (basically 3 dumps in an hour) or;
3) My insulin resistance is somehow increased after exercise

Any thoughts? (other that I'm kinda crazy...I know that.)
the adrenaline and other stuff created from intense exercising can raise sugars in some cases a lot and for me at least working out does reduce my insulin resistance and I get better results. think reduce insulin resistnace is the typical result but we're all an experiment of one so your results may vary

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Old 03-09-2011, 19:28   #4
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Originally Posted by joe_h View Post
the adrenaline and other stuff created from intense exercising can raise sugars in some cases a lot and for me at least working out does reduce my insulin resistance and I get better results. think reduce insulin resistnace is the typical result but we're all an experiment of one so your results may vary
I hope I don't 'vary' too much, LOL. All the research I've read suggest that even short-term aerobic exercise improves insulin-resistance. Maybe my 3 months just isn't enough to make a big difference yet, considering I still have about 40lbs of excess, mostly visceral, fat...

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47 yr. old Male
Alberta, Canada

Dx'd T2 Dec 19, 2010 - Fasting BG: 14.8 (267), A1c: 12.1, Wt: 290lb (over 320lbs at my heaviest)

As of Apr 23, 2013: 14-day Avg Fasting BG: 4.7 (85), A1c (Dec21): 5.1%, Stats: 230lb, 6'3" now with 37" waist

Low-Carb (Usually < 45-60g per day on a 3,000+ calories daily diet)

On Metformin only for meds. Exercise 6 days a week.
Supplement only with: Men's Multi-Vitamin, Vitamin D 2000iu/day, Aspirin 81mg, Cinnamon Extract and Fish Oil all 1x per day

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Old 03-09-2011, 20:37   #5
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always so many variables. well keep up the great work

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Old 03-09-2011, 21:29   #6
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I think all the testing will drive you nuts. I spike with exercise. The longer I exercise the higher I spike. It is usually around 30 points. My doctor told me not to be concerned since I do need exercise. But I think it keeps my HbA1c higher than I would like. How much metformin are you taking? I have found upping my metformin to the maximum has helped limit the spikes over night but I still get them with extreme exercise.

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Old 03-10-2011, 01:11   #7
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Beefy - You're a madman :-)

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Old 03-10-2011, 07:08   #8
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Quote:
Originally Posted by jwags View Post
I think all the testing will drive you nuts.
Heh... sorry, but I was nuts LONG before the testing ...

Quote:
Originally Posted by jwags View Post
I spike with exercise. The longer I exercise the higher I spike. It is usually around 30 points.
That's pretty close to mine. My normal 'dump' during exercise is about 2.0 mmoL/L which is about 36 points on your scale. It would appear I dump slightly more during extreme intensity activities.

Quote:
Originally Posted by jwags View Post
My doctor told me not to be concerned since I do need exercise. But I think it keeps my HbA1c higher than I would like.
That's certainly one of my concerns, is the HbA1c. I do my next test in about a week. I'd love to be in "the 5% club" but with all my dumping, I doubt I'll make it this soon. Heck, I was 12.1% not even 3 months ago, so I'll be thrilled if this result is in the 6-7% range.

Quote:
Originally Posted by jwags View Post
How much metformin are you taking? I have found upping my metformin to the maximum has helped limit the spikes over night but I still get them with extreme exercise.
I currently take the maximum dosage, 2x1000Mg of the extended-release version. I was taking the 2 nightly, but they want me to take one in the AM and one in the PM now. We'll see how that changes things.

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47 yr. old Male
Alberta, Canada

Dx'd T2 Dec 19, 2010 - Fasting BG: 14.8 (267), A1c: 12.1, Wt: 290lb (over 320lbs at my heaviest)

As of Apr 23, 2013: 14-day Avg Fasting BG: 4.7 (85), A1c (Dec21): 5.1%, Stats: 230lb, 6'3" now with 37" waist

Low-Carb (Usually < 45-60g per day on a 3,000+ calories daily diet)

On Metformin only for meds. Exercise 6 days a week.
Supplement only with: Men's Multi-Vitamin, Vitamin D 2000iu/day, Aspirin 81mg, Cinnamon Extract and Fish Oil all 1x per day

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Old 03-10-2011, 07:12   #9
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Quote:
Originally Posted by beefy View Post
Bah... just realized that I'm sitting at a 7.1 (128) and it's time for my next meal. Argh. Hopefully I don't spike much off this one, LOL.
Oddly enough, I ate right after I posted this. I had a small bowl of chili and about 3/4c of broccoli steamed and topped with butter, salt and pepper.

I tested 1hr later to see how much higher I got... and I'd DROPPED down to 6.1 (110). My 2hr post was down to 5.7 (103) ...

It's odd I dropped for both 1hr and 2hr post meal... I'm guessing the exercise kept my metabolism burning after all...

__________________
47 yr. old Male
Alberta, Canada

Dx'd T2 Dec 19, 2010 - Fasting BG: 14.8 (267), A1c: 12.1, Wt: 290lb (over 320lbs at my heaviest)

As of Apr 23, 2013: 14-day Avg Fasting BG: 4.7 (85), A1c (Dec21): 5.1%, Stats: 230lb, 6'3" now with 37" waist

Low-Carb (Usually < 45-60g per day on a 3,000+ calories daily diet)

On Metformin only for meds. Exercise 6 days a week.
Supplement only with: Men's Multi-Vitamin, Vitamin D 2000iu/day, Aspirin 81mg, Cinnamon Extract and Fish Oil all 1x per day

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Old 03-10-2011, 15:05   #10
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that's how it works for me as well. sugars the day after a workout are usually better

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