[quote]Christian Thibaudeau wrote:
gyakujujijime wrote:
Christian Thibaudeau wrote:
gyakujujijime wrote:
Oh and I have another quick question for you, that in my opinion should be interesting for everyone.
I read that endurance athletes could perform well energy-wise using a low carb - high fat diet.
However, knowing that fat uses way more oxygen than carbohydrates to be used as fuel, wonât this diet put them in an oxygen debt?
My problem is that even if my theory seems good in appearance, I didnât feel any ill-effects related to my very-low carb diet in my cardio activities (wrestling and running).
Thanks!
Your theory doesnât even sounds good in appearance.
After further research, I found this study, which seems to be in adequation with my ideaâŚ
http://www.drmirkin.com/public/Ezine030506.html
âThis study shows that a high-fat diet before extended sprinting hurts performance. A high fat diet causes muscles to burn a higher percentage of fat. Using fat for energy requires more oxygen than carbohydrates do, and how fast you can sprint 0.6 miles on a bicycle is limited by how rapidly you can deliver oxygen to muscles. Restricting carbohydrates before a sprint taking more than 50 seconds increases oxygen needs which slows you downâ
while the positive adaptation of endurance athletes to a Hfat-Lcarb diet was read in an article written by Charles Poliquin.
What did I get wrong? Maybe the fact that what CP calls âendurance athletesâ is people involved in sports like long distance cycling⌠if so, then what can be said about other athletes (I was thinking of being on a low carb diet year long for wrestling)?
Thanks, sorry for the long posts, but I canât help it!
Sprinting doesnât call for aerobic capacities, so its not oxidative in nature. Oxygen dept is seen with HIGH INTENSITY WORK, not endurance work.
And CP said that endurance athletes are generally built to do well on high carbs, not high fat diets.
From question of strength no.46:
"Q: Coach, your nutritional approach leans toward lower carbs and lower grains for most of the population. But what about low carbs for endurance athletes? Donât they need the energy from carbs?
A: Hereâs the thing: If these athletes have the genotype Ă¢?? the genetic constitution Ă¢?? to be endurance athletes, then theyâll naturally be carb-tolerant anyway.
Theyâre not âmadeâ to be power athletes, and that goes for their nutritional tolerances as well as their physical structure. Their diet should be 65 to 70 percent carbohydrates. And remember, only 25 percent of the population is genetically carb-tolerant.
Iâve worked with endurance-type athletes in the past Ă¢?? swimming, biathlon, cross-country skiing Ă¢?? and itâs not uncommon for a cross-country skier to consume as much as 6,000 calories per day, with 70 percent of those from carbohydrate. These types of athletes used to not consume enough protein, but thatâs mostly a thing of the past among those who perform well.
You canât take 1970s research and apply it to athletes of this century. Their training volume wasnât anything like it is today, when itâs not uncommon for some athletes to train three times per day. Some national teams may have their athletes consume as much as 10,000 calories per day. Unless they use carbohydrate liquids, theyâre never going to make it.
So, carbs for hard-training, genetically inclined endurance athletes? Sure."
The problem is that you donât seem to understand what âenduranceâ work is. Sprinting is not endurance work Wrestling is NOT endurance work⌠itâs RESISTANCE (or strength-endurance) work.[/quote]
Thanks, this story gets clearer now⌠I found back the thing that had me confused, it was the low carb roundtable part 2, and in this article, Poliquin said:
"For competitive athletes, how do you feel about a long term low-carb approach?
Charles Poliquin: If youâre talking about energy system sports like kayak or speed skating, then Iâd say that low-carb diets donât do well for these because of the demands on their glycogen stores, but those athletes tend to be insulin sensitive anyway.
Though an extremely low-carb diet would probably not be the perfect way to go for Olympic quality athletes, itâs interesting that the one study that was done with high performance athletes and a ketogenic diet (a very extreme form of low-carb diet) showed that their performance returned to ânormalâ (which for them was world class) within a month of being on the diet, showing that adaptation takes place. "
This was the âpositive adaptationâ I was talking about⌠I just didnât get the separation in this sentence between energy system sports and others.
Now I get it better.
To sum it up:
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ENDURANCE (now that I know what it is lol) athletes should eat High Carbs diet, for oxidation concerns as well as for caloric expenditure considerations.
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Other athletes cases need to be adressed individually considering the athleteâs insulin sensitivity, his training schedule, his body fat⌠but in most of the cases a low carb diet has a lot of advantages, since strength or resistance training do not cause oxidation. However I think that an athlete shouldnât use a ketogenic diet year round because it is not compatible with hyper high performance (except for strength sports maybe, now that Iâve read that your bodybuilders now hit new personal bests DURING their dieting period (??)).
Did I get it right?
Even if you donât find time to answer, thanks a lot for the time you spend clarifying nutrition questions, even if it goes against what you used before, and thus forces you to reconsider everything. Thatâs really a great opportunity to learn for us all.
Thanks again!