Originally Posted by
Carbonfiberboy
As I explained, I'd already gone through a long period of adapting my body to use fat efficiently during cycling.
I missed the part of your post where you said you were increasing your fat percentage.
However, you didn't mention what your macro nutrient percentages were as you increased your fat content in your diet. If carbohydrates were still the primary macro nutrient, your body still may have needed time to adjust to a low carb diet.
Granted, your experience doesn't seem to be that out of the ordinary either based on the majority of articles and personal accounts I've read, so the article I linked earlier may very well be representative of a minority of people that a can continue to cycling on a low carb diet without suffering a performance loss.
I know I've personally experienced decreased energy levels, as when I do I've added carbohydrates back in. But I've yet to push through that and continue eating low carb for 2-3 weeks to see if that changed.