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High blood sugars before running
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<blockquote data-quote="Bebo321" data-source="post: 567192" data-attributes="member: 68730"><p>Hi Scardoc,</p><p></p><p>Absolutely right that blood glucose levels can rise with intense exercise. With regard to falling BG however, the mechanics of the body are pretty much the same for everybody with diabetes.</p><p>For somebody without diabetes, as soon as they begin exercising, their pancreas shuts off their insulin production. For anyone with diabetes who had circulating insulin, this obviously is not possible. This not only causes blood glucose levels to drop rapidly, low insulin levels are part of the feedback loop that trigger the liver to release glucose into the bloodstream - keeping BG levels topped up. </p><p>As I understand it, for the first 20mins or so into exercise, the body draws on it's on-board glycogen stores within the muscle cells - so really very little glucose needs to be drawn from the bloodstream. This is why I suggested that blood glucose levels should remain fairly level over a 5k run. Get the insulin regime right, and this does happen in practice (though it is obviously far easier to manage on a pump - after a lot of practice!)</p><p></p><p>Although it's obviously essential to stay safe, and have gels or sweets ready to treat falling bloods, I still think long term it would perhaps be better to keep the focus on insulin regime.</p></blockquote><p></p>
[QUOTE="Bebo321, post: 567192, member: 68730"] Hi Scardoc, Absolutely right that blood glucose levels can rise with intense exercise. With regard to falling BG however, the mechanics of the body are pretty much the same for everybody with diabetes. For somebody without diabetes, as soon as they begin exercising, their pancreas shuts off their insulin production. For anyone with diabetes who had circulating insulin, this obviously is not possible. This not only causes blood glucose levels to drop rapidly, low insulin levels are part of the feedback loop that trigger the liver to release glucose into the bloodstream - keeping BG levels topped up. As I understand it, for the first 20mins or so into exercise, the body draws on it's on-board glycogen stores within the muscle cells - so really very little glucose needs to be drawn from the bloodstream. This is why I suggested that blood glucose levels should remain fairly level over a 5k run. Get the insulin regime right, and this does happen in practice (though it is obviously far easier to manage on a pump - after a lot of practice!) Although it's obviously essential to stay safe, and have gels or sweets ready to treat falling bloods, I still think long term it would perhaps be better to keep the focus on insulin regime. [/QUOTE]
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