It would be helpful if you went into more detail about your diet at the time, and how long you followed it.
There is general agreement that even when fully keto-adapted, there is no anaerobic advantage.
"Keto-adaptation is the process of shifting your metabolism from relying mostly on glucose for fuel, to relying mostly on fat-based sources of fuel. Not only does fat oxidation itself increase, but your body starts producing enough ketones that they can be used as a significant source of fuel as well"