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Old 09-30-2003, 08:02 AM   #1
Paul Kayley
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Hi, I'm new to this forum. I have a good understanding of exercise science and nutrition. I am a triathlete switching over to Ironman, and have embraced the theories of the NHE plan and Paleo. I would like to learn more in depth about Paleo nutrition and Paleo history.

I am redisigning all my previous training philosophies based upon being a 'sugar burner' in favor of the fat adapted athlete.

Does anyone have any experience with medium chain triglycerides (MCTs) as a fat adapted athlete? Speed up recovery? GI distress? fluid uptake during exercise? Also can anyone recommend a source for MCT powder?

Perhaps someone might have compared the performance of MCT with coconut oil?

Many thanks PK
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Old 09-30-2003, 08:44 AM   #2
Robert Wolf
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Paul-

We're glad to have you here.

I have not tried MCT's other than in coconut oil form. I can not attribute any real increase in performance above what I experience from a generally more fat based diet.

MCT's travel via the blood albumin instead of miceles. Also, if I recall correctly, they do not requite a carnitine shuttle for entry into the mitochondria. In theory this makes them more accessable as energy. Radiolabled species of MCT's have proven to be metabolized preferentially to longer chain fatty acids but what that means for performance...? Mauro Dipasquale conjectures that too much MCT usage can down regulate the enzymes used for "normal" lipid metabolism. It makes sense, but again no prof I am aware of (I've not sifted pub med on this topic in a whaile, perhaps someone else can check this out?).

Lauric acid from coconut oil has some interesting effects on the immune system so it is likely worthwhile to include some in the diet. MCT's are possibley useful in a long endurance situation but running out of fat is never the issue, glycogen is however. The better fat adapted an athlete is typically the higher level they can perform at while utilizing a lower level of glycogen.

There is a cardiologist who is a triathlete/marathoner and he is a major consultant/proponent of the Atkins diet. I know he eats a general highr fat diet day to day but still has a carb loading protocol prior to race time. The Atkins website may have some info.


Sorry, this got pretty far afield from your original question but this all came to mind!
Robb
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Old 09-30-2003, 09:25 AM   #3
Paul Kayley
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Thanks Robb. Where do you get your coconut oil, it seems pretty hard to source over here (UK). The health outlets on the net are charging for its many claimed health benefits (which I dont blindly dispute). May try an indian cooking specialist.

Does it taste OK?
PK
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