I'm hoping someone can help me with my HRM. I rode my first century with my wife last weekend in Clarksville, TN. It was hot, the heat index hit 100+.
Here's some data:
Height: 5' 8"
Average weekly mileage: ~120mi
Z1 - Endurance 0-114 1:06 0%
Z2 - Moderate 114-151 1:41:17 28%
Z3 - Tempo 151-169 3:37:29 61%
Z4 - Threshold 169-188 35:47 10%
Z5 - Anaerobic 188+ 0:00 0%
Recently I've started riding with a HRM and have not done a max HR test but I estimated 194 which I suspect could be low. I've also read that high temp can increase your HR by 5 or more bpm, and given that my average HR was 156, this could put the majority of my riding in Zone 2. Can I safely assume that's what happened? Does my max HR sound too low?