Anaerobic - i feel more or less normal while under aerobic load, and i can sustain significantly less anaerobic load - i used to be able to maintain 1600W for about 30 seconds (equivalent to a sprint to a finish line at pro-cyclist level). I can barely touch 1000W while on fast/low carb diet. I did a few experiments, and after carb loading I get an immediate increase in anaerobic perf.