4

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BCAAs Reduce Fat Oxidation?

Answered on August 19, 2014
Created September 08, 2011 at 4:05 PM

http://www.ncbi.nlm.nih.gov/pubmed/12162411

"Carbohydrate-rich meals are used as a late evening snack in cirrhotic patients, but our study indicates that supplementation with a BCAA mixture can also be used to reduce fat oxidation in the early morning, with results similar to those with carbohydrate-rich snacks."

If one were doing a prolonged fast, say 48 hours, and wanted to supplement with plain BCAAs would this negate the effect of the fast and halt both muscle catabolism and fat oxidation to any significant degree???

5b69a02dadcae753771921d913909215

(1457)

on February 18, 2012
at 03:16 PM

I don't know. I imagine your body uses the BCAAs then goes back to burning fat. If you are "fat adapted" and haven't been very active you will still probably have glycogen stores on day two also. If you look at a protein sparing modified fast you are basically running on fat and protein but the protein comes from food rather than your own muscle.

C2ad96801ec1e22d2bf62475b6e52751

(1416)

on September 09, 2011
at 02:57 AM

Also interested in this. If not protein and not fat, then carbohydate? From where? What happens after glycogen stores are depleted?

6d64cd6dc98d6ab763bd03678a317964

(2177)

on September 08, 2011
at 05:38 PM

Thank you. So then what would the body be feeding on?

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2 Answers

3
Ed71ab1c75c6a9bd217a599db0a3e117

(25477)

on September 08, 2011
at 04:45 PM

Yes they do. Anything that spikes insulin turns off all fat burning at the mitochondria

6d64cd6dc98d6ab763bd03678a317964

(2177)

on September 08, 2011
at 05:38 PM

Thank you. So then what would the body be feeding on?

C2ad96801ec1e22d2bf62475b6e52751

(1416)

on September 09, 2011
at 02:57 AM

Also interested in this. If not protein and not fat, then carbohydate? From where? What happens after glycogen stores are depleted?

5b69a02dadcae753771921d913909215

(1457)

on February 18, 2012
at 03:16 PM

I don't know. I imagine your body uses the BCAAs then goes back to burning fat. If you are "fat adapted" and haven't been very active you will still probably have glycogen stores on day two also. If you look at a protein sparing modified fast you are basically running on fat and protein but the protein comes from food rather than your own muscle.

0
B66864bf6b0d2e74243a5becfbbb7491

(0)

on February 18, 2012
at 08:49 AM

Mitochondria do not metabolism fats.

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