- We are Running on Ketones. This is not a typical story; we are endurance athletes at different stages of our lives, who are experimenting with a low carb Ketogenic diet. We are not doctors or scientists, just athletes. Anthony is the youngest and the fastest, age 20, and prefers ultra road running. Eric (ZoomZoom), age 27, is ukulele playing mixed distance runner. Dan (SKA Runner), age 42, is new to running, prefers mountains ultras, and a bit of a computer geek. Bob(uglyrnrboy), age 54, prefers mountains ultras and loves to tele ski. This site,, will document our journey as endurance athletes implementing a low carb ketogenic diet in to our lives. Please feel free to contact us with any questions you have about our experiences.

What is a Nutritional Ketosis Diet? []

The ketogenic diet is a high-fat, adequate-protein, low-carbohydrate diet. The diet forces the body to burn fats rather than carbohydrates. Normally, the carbohydrates contained in food are converted into glucose, which is then transported around the body and is particularly important in fuelling brain function. However, if there is very little carbohydrate in the diet, the liver converts fat into fatty acids and ketone bodies. The ketone bodies pass into the brain and replace glucose as an energy source. This elevated level of ketone bodies in the blood is a state known as ketosis.


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Spinning on a Keto Cheat

This week I just finished up phase II of a calcium / osteoporosis cycling study. I participated in it last year and for all 4 of my rides I was required to eat this not so keto breakfast 3.5 hours before riding. Thankfully I didn't have to eat it before my VO2 max rides.

Oatmeal 35g, Whey Protein Powder 12g, Rasins 9g, Walnuts 10g, Brown Sugar 3g, Eggbeaters 95g, Canola Oil 6g, Baked Potato 125g, Butter 4g, OJ

The procedure was a 1 hour ride at 70% power of max power at VO2max. Then 4 hours of fasting. I ate my potatos cold in an attempt to get a little RS into the diet and was well back into ketosis after the fasting.

While results are preliminary it appears that cycling uses up an enormous amount of calcium for muscle contraction.

Lots of other lab tests were run including a DEXA scan. Here are some of the results.
Differences from last year:
BF% 8%-> 14%
Bone Density Hip 0.2 -> -0.4
Bone Density Spine -0.6 -> -0.2
VO2max absolute 3.74->3.64
VO2max relative 56.9->48.1
Max Watts 250->275
Max HR 186->178
TSH 2.89 -> 1.1
Serum Calcium no change
Vit D no change

It's a little depressing that my only cheat meals in the last 2.5 years of keto have been hospital food.


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