A3414e929f7c39da2fb07ef3b973bc25
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Adapting the paleo diet for endurance athletics

by (105)
Updated about 3 hours ago
Created June 13, 2010 at 9:32 PM

Ketogenic diets and physical performance describes some adaptations to a ketogenic diet that allow for unimpaired physical performance. The key recommendations are:

  • optimizing sodium and potassium intake (sodium at 3???5 g/d and potassium at 2???3 g/d)
  • constraining protein to 15???25 % of daily energy expenditure
  • allowing 2-3 weeks to adapt to the diet

I'm up to about 10 miles in my marathon training. I don't carbo load, but I do get crampy/low energy when I run. Have other paleo endurance athletes found it necessary or helpful to follow these guidelines? Thanks.

Ed0cb30f40daff568778b776b2a5a81d
943 · November 03, 2012 at 6:30 PM

Very interesting. Can I please ask you to share your personal stats, weekly training schedule, meal plan with macronutrients and how calories you consume (if you track that)? Do you take any supplements? I know I'm asking a lot but I'm kind of in the situation as you although I've had a major setback (possibly due to other issues). You can just write me a personal message. I would very much like to get in touch with you to have someone to share some thoughts with.

Fcb57d2f159f7936b6ca52711bf648a1
40 · January 10, 2012 at 8:40 PM

I believe it is more to do with speed/pace than heart rate. Sometimes these correlate, but not always!! Ultra-endurance guys and recreational marathoners (not elites) are running slowly enough that their fast-twitch muscles mostly do not get in on the act. As soon as pace goes up past a *certain* point (individual metabolisms may vary), then fast-twitch gets involved - and they need glucose/carbs.

7255a87872b75e6f691d84dca769b87e
1373 · August 21, 2011 at 2:34 PM

Unfortunately, if you raise your heart rate enough to inhibit lipolysis, halt fat burning, you're going to burn through your stored muscle instead of fat with absence of carbohydrate. Your body will make carbs out of the amino acids in your cells and will run faster, with serious repercussions later. I have to look up how many grams of carbohydrate one gets from amino acids to see how much muscle a runner would burn through if they kept a fast (~80-90%) heart rate throughout a marathon. Quite a scary thought

7255a87872b75e6f691d84dca769b87e
1373 · August 21, 2011 at 2:30 PM

If they keep their heart rates low enough to allow the fat burning mechanisms to fire, these people can run forever on their stored body fat. I've heard it get thrown around (no sources) that a runner with 3% body fat could run multiple consecutive marathons on his/hopefully nor her(!) fat. If you assume 100 cal/mile times 26.2, that leads to 2620 calories per marathon with 3500 cals in a pound of fat. Sorry for the ramble but in short you could run a marathon with <1lb of body fat. And if you keep your heart rate low by training to lower your anaerobic threshold, you'll burn mostly fat.

B124653b19ee9dd438710a38954ed4a3
1634 · November 21, 2010 at 9:23 PM

Jonas Colting, professional triathlete, recently posted his training routine and what he ate during the period. In Swedish so pass it through a translator. http://nyheter24.se/blogg/coltings-den-nakna-sanningen/ He trains low (carb) and races high.

B124653b19ee9dd438710a38954ed4a3
1634 · November 21, 2010 at 9:22 PM

Jonas Colting, professional triathlete, recently posted (in Swedish) his training routine and what he ate during the period: http://nyheter24.se/blogg/coltings-den-nakna-sanningen/ Considering his training volume the small number of carbs he takes is impressive. He trains low (carb) and races high. [In English (Google Translate)][1] [5]: http://translate.google.com/translate?hl=en&sl=sv&tl=en&u=http://nyheter24.se/blogg/coltings-den-nakna-sanningen/2010/11/min-kostregistrering-the-full-monty/

1a8020e101199de55c1b3b726f342321
1973 · June 14, 2010 at 5:23 AM

Do you consume a few hundred grams of carbohydrates in the hours following your run?

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15 Answers

36dd8a49324c45fb49a38765000eca1e
7
377 · June 14, 2010 at 6:24 AM

I personally couldn't hang with a low-carb paleo approach when i was distance running. I'd experience the same impaired performance that Stephen mentioned. However, I think you really have to take the time build a strong aerobic base to become an optimal fat burner to preserve glycogen stores more efficiently. Here's a couple links that might give you some insight on paleo endurance strategies:

http://www.marksdailyapple.com/jonas-colting/

http://robbwolf.com/2010/05/31/paleo-and-ultra-endurance/

B124653b19ee9dd438710a38954ed4a3
1634 · November 21, 2010 at 9:22 PM

Jonas Colting, professional triathlete, recently posted (in Swedish) his training routine and what he ate during the period: http://nyheter24.se/blogg/coltings-den-nakna-sanningen/ Considering his training volume the small number of carbs he takes is impressive. He trains low (carb) and races high. [In English (Google Translate)][1] [5]: http://translate.google.com/translate?hl=en&sl=sv&tl=en&u=http://nyheter24.se/blogg/coltings-den-nakna-sanningen/2010/11/min-kostregistrering-the-full-monty/

B124653b19ee9dd438710a38954ed4a3
1634 · November 21, 2010 at 9:23 PM

Jonas Colting, professional triathlete, recently posted his training routine and what he ate during the period. In Swedish so pass it through a translator. http://nyheter24.se/blogg/coltings-den-nakna-sanningen/ He trains low (carb) and races high.

8347d512bca9b034d53da40dab8cd21c
5
2517 · June 13, 2010 at 11:09 PM

Honestly, I've been doing endurance running for a couple of years, and have run a few races this year already (two half-marathons and a couple of 5K's and 10K's). I haven't really changed up anything in the Paleo Diet. I know there's the "...For Athletes" book (I own it) but I have a hard time wrapping my head around eating more carbs.

I actually have found that practicing IF in the mornings (so I don't eat until noonish anyways) kept me from being hungry the morning of a race, and then I just had coffee a couple of hours before the run. Scarfed down some good clean foods post-race and then ate normally the rest of the day.

Results may vary, but this has been my experience.

Ccdf3fbcaec76e025ff94d03cc4daf9a
2
536 · August 18, 2011 at 9:03 PM

I have been training for my first Half-Ironman triathlon, and I swear by sweet potatoes. I eat AT LEAST one a day. For me, those are the best carbs for long workouts or races.

D8943072358128638901aa8faa6ba99e
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56 · January 07, 2012 at 10:22 PM

I have had to adapt and drink carbs during bike rides lasting longer than 1 hr because I would fatigue and feel weak and dizzy after about 45 minutes. I now drink between 1/2 and 3/4 of a small bottle of PowerBar Endurance (half of what I used to drink before paleo), and supplement with a homemade bar (cuisinarting mixed nuts, dried fruit, coconut oil) and a little pemmican, if ride is longer than 2-3 hrs or if I ride on an empty stomach. It is early in the winter, so I have not had super intense rides at race pace yet.

A3414e929f7c39da2fb07ef3b973bc25
1
105 · June 23, 2010 at 5:34 PM

I've tried a few of the suggestions here and did a bit more research too.

Magnesium supplementation at 400mg/day did not solve the issue, though I understand that sufficient magnesium helps with potassium retention. Adding some extra carbs did not help either.

What solved my feeling of crampy, unresponsive muscles was 400mg of potassium gluconate (suggested in the Eades' book The 6 Week Cure). I didn't expect it to work quite so well given that the US RDA of potassium is a whopping 3.5 grams and I already use potassium chloride liberally in cooking.

Badd9d10ff2f1c514b57d81862a72d37
1
20 · June 16, 2010 at 5:56 PM

Search around on MarksDailyApple.com he is a former endurance athlete turned Paleo dieter and has written a lot on the subject. You may need to adjust your diet a bit including adding some carbohydrates before/after your long workout days (> 1 hour). You also may need a little longer (4 weeks +) to adapt to the diet. I believe that's what the research by Dr. Phinney finds.

Curt

B91665045a6e9f66a1c1ba5cecebe49d
0
0 · March 17, 2014 at 7:13 AM

Hi there! I had a 10k run (finished it in 56 minutes) eating lots of veggies (and meat) the night before. I didn't really feel tired or exhausted. I ate a LOT of greens though to replace carbs. :)

B91665045a6e9f66a1c1ba5cecebe49d
0
0 · March 17, 2014 at 7:10 AM

Hello!

62dea23f4ad237b09beb1fa564f2fd93
0
0 · February 13, 2013 at 11:05 AM

Timothy Olsen, smashed the Western States 100 Ultra Trail, running on fats. Destroying all the carb fueled athletes. See podcast link on this page :

http://www.thelivinlowcarbshow.com/shownotes/7302/642-ultramarathon-runner-timothy-olson-thrives-on-a-low-carb-diet

587ec0d521a418bf54f6a9b08de3e64d
0
0 · November 03, 2012 at 6:09 PM

Read "The Art and Science of Low Carbohydrate Performance". I have been adapting to a ketogenic state for 4 weeks now (as measured by nova max plus blood ketone monitor) and I am getting faster. Keep carbs to less than 50 grams per day and eat 75-80% fat. My best 5k is 16:37 on a SAD diet. I believe that I will be able to match and hopeful best my 5k PR. I ran a time trial last week in 17:50 on my 3rd week of a ketogenic diet.

Ed0cb30f40daff568778b776b2a5a81d
943 · November 03, 2012 at 6:30 PM

Very interesting. Can I please ask you to share your personal stats, weekly training schedule, meal plan with macronutrients and how calories you consume (if you track that)? Do you take any supplements? I know I'm asking a lot but I'm kind of in the situation as you although I've had a major setback (possibly due to other issues). You can just write me a personal message. I would very much like to get in touch with you to have someone to share some thoughts with.

992862b1b9e443f83aa4e46d14833418
0
264 · April 17, 2012 at 10:21 PM

Glad I came across this thread. I posted this: Different Diets for Aerobic vs. Anaerobic Exercise

today and haven't gotten any responses. My partner is also an endurance cyclist and he wants me to help him create a more nourishing diet that will help him lose some fat while keeping lean muscle.

I've been reading around the interwebz (although I have yet to read the above mentioned links) and I was thinking that it might be better to start him off with something very strict (the Whole30) rather than less restrictive. If he operates like I do, and I think in this case his might, the effect of this being like ripping a band aid off in one fail swoop might make more of a positive impact on what he's hoping to attain -- and then he can choose to continue to eat Paleo or even try IF.

He's looking at me to do all the research (and most of the food prep) here. I'd love to get the whole family Paleo and if he's on board it'll be a lot easier to convert the kids (one of whom is the pickiest eater on the planet).

But I don't know. I could use some feedback on my original post. Hoping ET might weigh in. :)

D8943072358128638901aa8faa6ba99e
0
56 · March 26, 2012 at 1:05 AM

In my prior post of Jan 7 2012, I noted that after 45 min of intense cycling I would lose stamina. I had been paleo for about 3 weeks then. Eventually I pushed through and eliminated the carb drinks altogether, only drinking water; for longer than 60 minute rides, I do not cargo-load and only eat 1 Larabar per 90 minutes of riding, about 15 to 20 grams of carbs per hour, plus all the fat and protein in pemmican that I feel like, usually about 15 grams of fat and 8 grams of protein per hour. I completed my first bicycle race March 11, very hilly 110 miles and found, to my surprise, that I was able to maintain intensity with only the usual fatigue. So indeed, your body can get used to burning primarily ketone bodies, metabolized by the glucagon secreted by your pancreas from fats and protein, and also by burning stored glycogen. I am still experimenting…but it took me 4 to 6 weeks to make the full transition to a high fat/low carb diet and retain the same level of performance in competitive cycling.

A480640a53eb5dc8966f49141942f705
0
1694 · June 24, 2010 at 9:58 AM

"Born to Run" features ultramarathoners who run mostly on carbs.

I wonder what how much power is available from the fat-burning pathways -- what level of continuous exertion can a ketoadapted, body-fat-fueled athlete sustain, under conditions of zero dietary carbs and glycogen exhaustion?

Is it possible for the guys who do 24-hour runs, or 100-mile runs, to do it on stored fat, or are dietary carbs pretty much essential to sustain, say, a 10-minute mile?

7255a87872b75e6f691d84dca769b87e
1373 · August 21, 2011 at 2:30 PM

If they keep their heart rates low enough to allow the fat burning mechanisms to fire, these people can run forever on their stored body fat. I've heard it get thrown around (no sources) that a runner with 3% body fat could run multiple consecutive marathons on his/hopefully nor her(!) fat. If you assume 100 cal/mile times 26.2, that leads to 2620 calories per marathon with 3500 cals in a pound of fat. Sorry for the ramble but in short you could run a marathon with <1lb of body fat. And if you keep your heart rate low by training to lower your anaerobic threshold, you'll burn mostly fat.

7255a87872b75e6f691d84dca769b87e
1373 · August 21, 2011 at 2:34 PM

Unfortunately, if you raise your heart rate enough to inhibit lipolysis, halt fat burning, you're going to burn through your stored muscle instead of fat with absence of carbohydrate. Your body will make carbs out of the amino acids in your cells and will run faster, with serious repercussions later. I have to look up how many grams of carbohydrate one gets from amino acids to see how much muscle a runner would burn through if they kept a fast (~80-90%) heart rate throughout a marathon. Quite a scary thought

Fcb57d2f159f7936b6ca52711bf648a1
40 · January 10, 2012 at 8:40 PM

I believe it is more to do with speed/pace than heart rate. Sometimes these correlate, but not always!! Ultra-endurance guys and recreational marathoners (not elites) are running slowly enough that their fast-twitch muscles mostly do not get in on the act. As soon as pace goes up past a *certain* point (individual metabolisms may vary), then fast-twitch gets involved - and they need glucose/carbs.

622a34307765c2f7c1dfdc7345842418
0
25 · June 14, 2010 at 3:36 PM

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