CrossFit Discussion Board  

Go Back   CrossFit Discussion Board > CrossFit Forum > Nutrition
CrossFit Home Forum Site Rules CrossFit FAQ Search Today's Posts Mark Forums Read

Nutrition Diet, supplements, weightloss, health & longevity

Reply
 
Thread Tools
Old 03-09-2006, 03:35 PM   #1
Paul Kayley
Member Paul Kayley is offline
 
Profile:
Join Date: Sep 2003
Location: York  North Yorkshire
Posts: 195
In Lyle McDonalds Ultimate Diet 2.0 he states -

"When glycogen is depleted carbs go to glycogen synthesis first,and energy production second. This effect lasts for 24 hours, or until glycogen is restored to normal levels. That means that, for short periods, you can eat carbs and continue using fat for fuel"

This pertains to the following study:-

http://jp.physoc.org/cgi/content/full/548/3/919

Glycogen hungry exercise rocks for fat burning - eat carbs and still burn fat. Keeping lean is then just a case of roughly matching carbs in vs. carbs out, eating enough protein, and balancing fat consumption relative to current body composition aims.
  Reply With Quote
Old 03-09-2006, 08:03 PM   #2
Steve Liberati
Affiliate Steve Liberati is offline
 
Steve Liberati's Avatar
 
Profile:
Join Date: Jan 2006
Location: Pennsauken  NJ
Posts: 1,649
Be careful, you might get crucified around here for posting anti-Zone sentiment.

All joking aside...it looks like a worthy piece.

After I get done finishing my oats and protein shake ...I'll take a closer look at it.

thx
  Reply With Quote
Old 03-09-2006, 08:11 PM   #3
Jesse Woody
Affiliate Jesse Woody is offline
 
Profile:
Join Date: Jul 2005
Location: Orange  Virginia
Posts: 915
Wait...isn't the Zone 40% carbohydrates? Seems like losing weight while eating carbs to me... ;)

Needless to say, there are also some practitioners of the cyclic low-carb idea here too, I think Robb is amongst them (or has been, from time to time)
  Reply With Quote
Old 03-09-2006, 08:49 PM   #4
David Ingersoll
Member David Ingersoll is offline
 
Profile:
Join Date: Dec 2005
Location: Montreal  Quebec
Posts: 46
This is all pretty clearly explained in NHE (natural hormonal enhancement), which has you eating large amounts of carbs two meals per week.

You basically eat a limited amount of carbs for four days, thus depleting your glycogen, and then gorge yourself on them on the final meal of your fourth day. You then restrict carbs again for three days, only to force feed yourself carbs on the last meal of the third day. The cycle then starts again for four days, then three, then four again etc...

The theory is that if you deplete your glycogen by restricting carbs, by the time you finally eat some carbs, they will preferentially go toward muscle glycogen rather than liver glycogen. The former can only be used as fuel by the muscles, so they cannot contribute to fat gain. The latter, can be released from the liver as glucose through glycogenolysis, and then stored as fat via insulin.

It's all nicely referenced in NHE, and although many of the studies are done on rats, and therefore not optimal, he makes pretty convincing arguments.

  Reply With Quote
Old 03-10-2006, 04:12 AM   #5
Jesse Woody
Affiliate Jesse Woody is offline
 
Profile:
Join Date: Jul 2005
Location: Orange  Virginia
Posts: 915
Also, keep in mind that NHE took quite a bit of information from the Metabolic Diet by Dr. Di Pasquale. You can find this book, along with his other work here:

http://www.metabolicdiet.com
  Reply With Quote
Old 03-10-2006, 03:56 PM   #6
Garrett Smith
Member Garrett Smith is offline
 
Profile:
Join Date: Apr 2005
Location: Tucson  AZ
Posts: 2,264
The NHE gorging plan didn't work for me at all, then again, I was consuming a whole bunch of foods that I now know don't agree with me back then (ie. dairy, gluten).

Now, I can imagine that finding low-GI, paleo-friendly (non-dairy/grain/juice/legume/etc.) foods that total 100+ carbs (while staying under the proposed fat/protein limits) in one feeding is quite a task to ask of one's stomach.

That diet felt even more contrived to me than the Zone diet does, and also very hard to fit into a semi-normal lifestyle.
  Reply With Quote
Old 03-10-2006, 04:50 PM   #7
Taha Mohamedali
Member Taha Mohamedali is offline
 
Taha Mohamedali's Avatar
 
Profile:
Join Date: Jul 2004
Location: Seattle  WA
Posts: 99
NHE sounded pretty convincing to me too, however i found it really hard to implement, I found myself always waiting for the carb load, then often times I'd eat bad carbs. I do prefer the zone favorable approach. I have been doing a little extra carb here and there when I workout for longer. I found that being precisely on the zone doesn't take into consideration my carb needs and enough glycogen replacement, which leads to sub par workouts. So, when I feel like my body is tried and weak, I'll up the carbs at one or two meals, allow for some glycogen replenishment and then be ready to go. I also subscribe to the 4:1 carb:protien thing on some longer duration workouts, since insulin sensitivy is higher immediately post workout, I can shove in some simple carbs, plus a little ribose and it gets nicely shuttled to my muscles and I'm ready to go again within an hour or two....
  Reply With Quote
Reply


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Situps - how best to do them without butt burn Peter Dell'Orto Exercises 6 09-02-2007 08:46 PM
Burn fat and in muscle at the same time Joe Miller Fitness 9 10-10-2005 08:05 AM
Do we need to eat any carbohydrates? Brad Hirakawa Nutrition 13 05-01-2004 02:31 AM
Carbohydrates and Paleo... Scott Parker Nutrition 3 01-30-2004 04:54 PM
Let's not burn Robb out . . . . David Wood Nutrition 11 09-27-2003 02:24 PM


All times are GMT -7. The time now is 09:02 PM.


CrossFit is a registered trademark of CrossFit Inc.