I'm a bit of a noob when it comes to riding with a HRM, but I'm getting accustomed to responding to the numbers I'm seeing and am looking for some feedback on a ride I did today from those in the know.
This was a climb I did up the South gate road of Mt Diablo today - I put in a personal best time which I'm very pleased with. My HR plot is shown below for the climb - I settled into a groove of 175-180bpm for most of the climb which seems comfortable. What I've learned from climbing with my HRM so far is that when I sustain HR's of >180bpm for several minutes I am clearly going anaerobic and this tends to lead to fairly rapid fatigue. Keeping my HR at or below that level seems quite sustainable - as witnessed below.
So two questions - firstly it's not too scientific, but is what I've mentioned above consitent with a LTHR of 180?
Secondly, the last couple of minutes are the pure ecstasy of the wall at the top of Diablo - 18%-ish for a few hundred yards. After my pacing up the previous 11miles of the climb, I was up out of the saddle for this and peaked my HR at 192bpm. I honestly couldn't give any more effort and was just focused on finishing during this period. Is all out effort for 2minutes at the end of a sustained climb a good way to estimate my max HR? 220-age is useless as I'm 38, giving me a too low value of 182.
Any thoughts/opinions would be most welcome
thanks - B