Quote from Andrew Hamilton via Christopher George. This is about the Ketogenic (keto) Diet for endurance athletes.
“One longer-term low-carbohydrate approach that appears to be becoming more popular with athletes trying to increase fat burning is the use of a very low-carbohydrate, high fat diet – also known as the “keto diet”. The keto diet turns the conventional wisdom of a high-carbohdrate diet for athletes completely on its head. Instead of a typical 55% carb, 25% fat, 20% protein ratio in a high-carbohydrate diet, a keto diet supplies 75% of its calories from fat, with around 20% from protein and just 5% from carbohydrate!
But do keto diets really work for endurance athletes and if so, how can they be used without harming performance? And are there better, less extreme approaches that can achieve the same objective? These are all questions answered in the forthcoming issue of Peak Performance, which looks at what the latest science really says about keto diets, and their benefits or otherwise for endurance athletes.
As I’ve explained in the article, media hype is all well and good, but because keto diets are pretty hard to follow, you need to be confident that a) they’ll help your performance and b) you know how to use them correctly. There’s no denying that optimising body composition while consuming the correct diet to support racing and training is a hard nut to crack. But take it from someone who’s recently spent numerous hours lugging stones uphill – it could be well worth it!”
Sooner or later the rowing world will “get” this and wake up to the benefits of endurance training on fats… I just hope I am still alive!
Rowers discuss keto
I found this Reddit thread on ketogenic diet while rowing there is intense discussion. Here are a few quotes
A US rower who was on the national team
Erin Cafaro I think is the name you’re thinking of. Bow seat of the women’s 8 in 2012. Don’t know if she runs a blog but definitely did use the diet through the Olympic cycle.
Erin was a paleo adopter. Her husband, Brian Mackenzie talks about how he took her pretty far keto. Becoming “kept adapted” is the real challenge and the super unpleasant part. There’s been a lot of recent study and some good performances from keto athletes in triathlon, marathon and especially ultras. I don’t think it works well for rowing because the energy demands for a meaningful sprint can’t come from anything as well as they can from glycogen.
And from another contributor
To clarify on a few points here.
- Glycogen levels are not significantly lower on a day-to-day basis on a low-carb/high-fat diet when compared to a high carb diet. The physiological reason for this is that unlike glycogen in the liver (which is used up relatively quickly after the first few days of low carb), once glucose enters a muscle cell, it is phosphorylated and cannot leave (muscles lack the enzyme responsible for removing the phosphate group).
- Glycogen is less of a crucial fuel source when you are fat-adapted. The endocrine and enzymatic response to a high carb meal shuts limits the activity of the enzymes responsible for the breakdown of fatty acids in muscle cells. As you adapt to a high fat diet (producing ketone bodies, muscle epigenetics change to favor the production of enzymes that metabolize fat), you will be able to metabolize fat faster. Thus utilizing more fat at higher intensities.
- Fat is more accessible. Again, the endocrine response to increases in blood glucose levels is to pump out insulin, which tells fat cells to “store” rather than “release”. If fat cells are always ready to “release” their stored lipids, you will have better availability of fat in the bloodstream for muscles to pick up.
- If you are training on a well-polarized plan, you will use more fat (since more is available and more can be used) at all but the most intense levels of exercise. Thus, less need to recover glycogen on a day-to-day basis. If you drive your car at the same speed, but add a ton of weight, you use more fuel. Fat adapting enables you to maintain that speed, but leave more fuel (glycogen) in the tank.
- Diet is individual for everyone. Keto may or may not be the best diet for you. I enjoy it. I am certainly not performing at an elite level, but honestly how many of us are? My scores have been acceptable for a lightweight, and I’m happy with the balance between eating in a way that helps me keep my weight down, while being able to perform and compete.
And from someone who seems to be a coach
Anecdotally one of my faster kids on my team has been on Keto for years(independent of my pro-keto attitude), he used to be a swimmer and he used it successfully in that sport and now he is very quick fitness wise and does not feel like shit… although getting on the diet is hard because the transition can hit you hard, and that transition may take anywhere from 1-8 weeks.
But independent of my opinions I think there needs to be more studies because the distance of rowing hasn’t been studied very much, because keto was developed for ultra marathons and such and not 5:30-7:30 minutes of work.
Have any readers tried the Keto diet for Rowing?
Please share your experiences and where you got the information on what to eat and how to balance your expercise / nutrition needs in the comments below.