Torque Data Field...Anybody Using This?

Thats my thought process as well and that is where I seem to not be very good sustaining over prolonged periods of time. Ive done LSD and it makes me good at going long efficiently but doesnt really move my FTP. High Intensity work seems to move it but just still struggle at the muscle endurance required at higher power. Took a look at my torque at sweet spot and threshold at my natural cadence. Its 20 to 25 @ 88-92rpm. Current Z2 is 12 to 15 at normal cadence of 88. Im doing as much work up and down power curve at 20 to 22. That really brings cadence down for Z2 power. Like 55 to 65 rpm. Shooting for improvement in that torque output in duration.