1

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Branched Chain Amino Acids helping on a fast?

Answered on September 12, 2014
Created August 06, 2010 at 8:34 PM

I was thinking of doing a 24 period where i eat no carbs and no protein, the calories id get would be solely fat. Shot of coconut oil, olive oil, bit of butter if im bored kinda thing.

The idea is to do a quickish cut, lean out a bit without too much fuss.

I thought id ask about what role BCAAs (branched chain amino acids, specifically i guess leucine) could play. My thinking was that maybe i could extend the fast for like a full 48 hours or so as long as i was getting a good supp of BCAAs, since maybe they would keep my body from breaking down my own protein.

Currently im very low carb strict paleo all the way, and fast daily for about 14 hours and ive never taken BCAAs so any help would be rad.

1e68c6909db3ce6c272a7a0bf2c2978b

(320)

on August 15, 2010
at 10:06 AM

It was just a thought... "doses usually recommended" can be very high however, ala Poliquin (& Thibaudeau) 20-30g! Additionally the OP was not specifically discussing pre/post-workout use of BCAA (with which I have no problem).

1a8020e101199de55c1b3b726f342321

(1973)

on August 09, 2010
at 03:44 PM

Probably not at the doses usually recommended. A quick google search for "bcaa plasma glucose" shows a couple sources to support LiveForIt's assertion.

1a8020e101199de55c1b3b726f342321

(1973)

on August 09, 2010
at 03:37 PM

LiveForIt: Good point, I'll amend my statement to a couple hundred calories of paleo-kosher fat/protein.

1340fe0b7e7b01683ea33042092e05d6

(1693)

on August 08, 2010
at 09:06 PM

With the intake of BCAAs directly before a resistance workout, any insulin spike would be quickly brought down to baseline levels with the workout.

1340fe0b7e7b01683ea33042092e05d6

(1693)

on August 08, 2010
at 09:05 PM

Chris - that cannot be said with any certainty. That would greatly vary from person to person. For example, if those couple hundred calories came from HFCS or high glycemic carbs in general, you can certainly bet the fast is broken.

1a8020e101199de55c1b3b726f342321

(1973)

on August 08, 2010
at 03:45 PM

A few hundred calorie snack does not negative the benefits of a fast.

0dc1d63c3d5975f5115f535c6a90c9dd

(2283)

on August 06, 2010
at 11:09 PM

Exactly. Other than coffee or water, I don't think anything should be consumed during the fast. Otherwise, it's not a fast.

667f6c030b0245d71d8ef50c72b097dc

(15976)

on August 06, 2010
at 10:07 PM

thanks stephan, appreciate it. I follow a lot of your comments on these boards. Vmary, you too. I suppose ill look into Purple Wrath. Ill report what happens.

77877f762c40637911396daa19b53094

(78467)

on August 06, 2010
at 09:39 PM

so does arthur de vany

4b97e3bb2ee4a9588783f5d56d687da1

(22923)

on August 06, 2010
at 09:31 PM

Ketones if not glucose

F8fa4b0809d3b74fcf0361c0d53b60c1

(911)

on August 06, 2010
at 08:52 PM

It is worth noting that your body has to get glucose from somewhere. If you're sending a hormonal signal not to break down muscle, where does it come from? If glycogen is not fully depleted that seems like an obvious route. Otherwise your body needs to ignore that signal and convert protein anyway (requiring higher cortisol levels), or it doesn't ignore the signal and blood glucose crashes... I honestly don't know the answer, and have wondered about this myself.

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4 Answers

3
0dc1d63c3d5975f5115f535c6a90c9dd

(2283)

on August 06, 2010
at 11:07 PM

If you are training while fasting, take the bcaa before and after your workout. Then eat a bit later. Martin recommends men fasting for 16 hours and eating for 8. For women he recommends fasting for 14 hours with a 10 hour eating window. I don't think he recommends longer than that for fasting, though. I believe (and practice) that training fasted is the most effective way of achieving results.

1
1e68c6909db3ce6c272a7a0bf2c2978b

on August 08, 2010
at 03:28 PM

Worth bearing in mind that BCAAs are also very insulinogenic, so there's maybe potential there for stimulating hunger due to the accompanying drop in blood sugar...?

1340fe0b7e7b01683ea33042092e05d6

(1693)

on August 08, 2010
at 09:06 PM

With the intake of BCAAs directly before a resistance workout, any insulin spike would be quickly brought down to baseline levels with the workout.

1a8020e101199de55c1b3b726f342321

(1973)

on August 09, 2010
at 03:44 PM

Probably not at the doses usually recommended. A quick google search for "bcaa plasma glucose" shows a couple sources to support LiveForIt's assertion.

1e68c6909db3ce6c272a7a0bf2c2978b

(320)

on August 15, 2010
at 10:06 AM

It was just a thought... "doses usually recommended" can be very high however, ala Poliquin (& Thibaudeau) 20-30g! Additionally the OP was not specifically discussing pre/post-workout use of BCAA (with which I have no problem).

0
1340fe0b7e7b01683ea33042092e05d6

on August 06, 2010
at 11:06 PM

Eating fat during the 24 hour fast pretty much negates all the benefits of the fast.

But to the other question, yes taking BCAAs before the workout will definitely help.

1340fe0b7e7b01683ea33042092e05d6

(1693)

on August 08, 2010
at 09:05 PM

Chris - that cannot be said with any certainty. That would greatly vary from person to person. For example, if those couple hundred calories came from HFCS or high glycemic carbs in general, you can certainly bet the fast is broken.

1a8020e101199de55c1b3b726f342321

(1973)

on August 09, 2010
at 03:37 PM

LiveForIt: Good point, I'll amend my statement to a couple hundred calories of paleo-kosher fat/protein.

0dc1d63c3d5975f5115f535c6a90c9dd

(2283)

on August 06, 2010
at 11:09 PM

Exactly. Other than coffee or water, I don't think anything should be consumed during the fast. Otherwise, it's not a fast.

1a8020e101199de55c1b3b726f342321

(1973)

on August 08, 2010
at 03:45 PM

A few hundred calorie snack does not negative the benefits of a fast.

0
4b97e3bb2ee4a9588783f5d56d687da1

on August 06, 2010
at 08:37 PM

Martin Berkham (leangains.com) talks about BCAA pre fasted workout to forestall protein breakdown

He recommends Purple Wrath

77877f762c40637911396daa19b53094

(78467)

on August 06, 2010
at 09:39 PM

so does arthur de vany

667f6c030b0245d71d8ef50c72b097dc

(15976)

on August 06, 2010
at 10:07 PM

thanks stephan, appreciate it. I follow a lot of your comments on these boards. Vmary, you too. I suppose ill look into Purple Wrath. Ill report what happens.

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