>>60459
I've always been confused by all that because I don't get why they don't realize that things like that don't matter at all when your ftp is what is lacking. What does improved fat burning at lower wattage matter when your ftp is 50w below where it has to be to be competitive. If I were such a runner's coach I would dedicate any and all training to ftp increasing, all that efficiency min-maxxing can happen once the w/kg is there and only then.