Before it starts being converted to fat? I know it varies based on how much muscle you have and how effective your body is at storing carbs, but can I get a ballpark estimate for how many grams of carbs the liver/muscles can store?
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Thread: How much glycogen can you hold?
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05-25-2008, 11:49 AM #1
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05-25-2008, 11:52 AM #2
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05-25-2008, 12:17 PM #3
- Join Date: Oct 2005
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An "active" 150 lb. man can store ~2000 calories - 1600 of which are stored in the muscles as glycogen where they can be used directly; 320 calories are stored in the liver as glycogen where they can be released into the bloodstream; and 80 calories are stored in the blood as glucose and can travel to where they are needed.
It is the mark of an educated mind to be able to entertain a thought without accepting it.
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05-25-2008, 12:23 PM #4
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05-25-2008, 12:30 PM #5
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05-25-2008, 12:37 PM #6
I was just curious, because just off the top of my head, the blood glucose calories didn't quite compute.
Let's say blood glucose is 100mg/dL.
Blood volume is about 5L, of which about 55% is plasma. So that's 2.75 L.
That would make total plasma glucose content about 2.75 g. That's far short of the 80 cals number. What am I missing?No sir, I don't like it.
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05-25-2008, 12:41 PM #7
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05-25-2008, 12:49 PM #8
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05-25-2008, 12:49 PM #9
- Join Date: May 2008
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It depends on the individual. Endurance athletes have higher muscle glycogen concentration compared with sedentary people. Increasing your muscle mass also increases your storage capacity for glycogen.As an example a person weighing 70kg can store 400kcal worth in the liver and 1200kcal in muscles. Average stores are approx 1600-2000kcal (400-500g) enough to last one day if you were to eat nothing
Reference- Bean, Anita (2006) The complete Guide to Sports Nutrition
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05-25-2008, 12:56 PM #10
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05-25-2008, 01:48 PM #11
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