My point is that many athletes “carbo load” - I know a pasta dinner before a Crew match was a regular occurrence during my college athletic days. Weather efficacious or not according to the latest study - it had a sound biochemical basis that “sugar loading” would not.
Thus I attempted to illustrate a fundamental difference between dietary intake of carbs and dietary intake of sugars.
If the race was long enough, the athelete would hit the wall when he ran out of sugar to burn. At that time, the advantage would shift to the athelete who had been training his body to burn the protien and fat, thus had his mechanism in place to do so, to minimally interrupt the energy transfer from carbs to stored fat and muscle.