I’d argue for keto for performance. But I guess it’s in the definition of performance.
Getting muscle mass to critical mass. And having that Greek god look. Which as far as I can tell, is the only thing it’s good for, a post workout photogenic body.
Or, and here is where I think performance should be measured. Being able to row from San Francisco to Hawaii and beat the world record holder by like a week? Eating a LC HF diet for those 40 some days?
https://www.ypo.org/2014/08/ypo-couple-row-from-california-to-hawaii/