I find that it's easier to maintain my power at a lower cadence. For example, 75 RPM versus 95 RPM. I'm using TrainerRoad. Recently, I've experimented with a higher cadence.
On one of the workouts, I could only complete 3 of 5 sets. It felt like hitting the wall which never happened to me before on TR.
Even for a recovery week's endurance workout, my hip flexors surprisingly lasted a little more than enough for the workout. Maybe those muscles were my weakest links.
Is it possible that my legs were heavy, making lower cadence even more efficient? My thigh's circumference is 20" and my shin's circumference is 14.5". My height is 5 feet 7.
Is it better to do an FTP test with the ideal cadence or the most efficient cadence (the one that allows you to produce the most power)?
For my workouts, should I select the cadence that works best for me regardless of their recommendations?
Is it likely that my FTP was too low for a high cadence?