Was wondering to get some input. My FTP tests regularly at or around 300 watts. As I transition to indoor riding and following structured calendar workouts I find that I fade quickly (say after half of the plan w/o) on VO2 max efforts. Obviously my muscular endurance is not there as local conditions don’t line up enough hard efforts in a row.
My question: should I keep the FTP and hold out as long as I can or drop it to a level where I think I can handle through the planned workout? Basically, what is the best way to increase my muscular endurance during anaerobic efforts?