Originally Posted by
ZHVelo
The problem with this for pros is that their 80% is so high, that the overall energy demands are so high. Even if at 80% Vo2max you miraculously used 50% fat oxidization and 50% CHO, the sheer energy demands at 80% of their Vo2max means they still need a TON of carbs.
I have never said riders/racers should not use carbs.
My position is pretty simple. You can shift your fat utilization or RER to make you less dependant on carbs......up to almost 85% of VO2 max for very, very fit riders. Those numbers are in some of the studies I linked. This power level is beyond FTP for most riders. FTP is somewhere from 75-90% of VO2 max on almost all riders. 90% would be a super fit and super slowtwitch rider but not providing glucose and ultimately glyogen during a long ride is.....foolish.