Originally Posted by Mr.Mavic
I <3 Free VO2max testing:
MaxHR is 197bpm, Latic threashold is 188bpm, 90% of MaxHR is 178 bpm. I can ride all day there
until cardiovasular drift happens.
Actaully, to be honest, I've never really tried to see how long I could hold it there. According to tests and research, I should be able to hold that HR until glucose = no mo but, like i said, never tried.
LTHR at 95% of maximum HR would be extremly high. (see .e.g.
http://jap.physiology.org/cgi/conten...ract/56/5/1260)
So a couple of thoughts:
1) how was your LTHR determined (blood measurements in a lab?)
2) your LTHR pretty much correlates to your functional threshold for 1 hour.
3) It's extremely difficult to sustain work at LT Threshold for over an hour, so if your working all day at this level it's not your true functional threshold.
4) The variability of HR's for individuals is the reason to train with power.
5) And to actually try it, go do a 40k TT, and see what you get for an average HR.