This should be a simple answer, but maybe not. I am adding a little feature to my Garmin Datafield I’ve created. So that during a ride, it also shows how much time I spent in each of the 80/20 poles. The best explanation I’ve seen is that this means 80% below LT1 and 20% above FTP (LT2). I get LT2.…

Looking at my heart rate range of my easy rides over past 7 months I’m generally keeping it between 60-70% of max HR. But if I have a few minutes during a long ride where it’s crept up to 75% max HR I don’t stress about it. The key for me, for the easy ride, was letting the ego go when someone ove…

Do people who are pacing by HR account for cardiac drift due to changes in ambient temperature and/or humidity?

This is my first summer to go by HR, so have no strategy yet but I’m going to try keep absolute HR number: during ~2 week heat acclimation period power will be lower. After that hopefully returns to usual levels :thinking: Assumption is that body as a whole does more work in hot/humid environment a…

When pacing by HR, cardiac drift means your power will go down over time, your heart rate won’t go up, as that’s what you are pacing off. If your RPE has significantly changed for that heart rate it’s time to head for home.

yeah, that is why I do endurance rides off power not HR. Where I live is hot and humid and temps can vary 20-30F from when I begin and end a ride. With pretty stable power over a 5 hr ride I still get pretty significant cardiac drift just due to heat and slight dehydration. Hence why I don’t unde…

But by going off power you’ll drift out of easy and above your LT1 unless the power was conservative to start.

How would cardiac drift from thermoregulation and mild dehydration push me from below LT1 to above it?

[image] dbrillha: But in general, about what % of FTP should you try to stay below Long discussion on LT1 here: [image] Calculating LT1 and LT2 approximately without a blood test? Training How do people approximately calculate their LT1 and LT 2 without a blood tes…

I think I can compare 4hr indoor rides over the winter with minimal cardiac drift (stable 65F) to similar length outdoor rides in the summer (start 65F to 85F at end) with similar NP where I have much more cardiac drift. Sure, power is a bit more variable outside and I’m not able to compare rides 1…

I don’t ride in a polarized fashion nor pace off HR, hence my question for others. I, personally, think there are too many factors that vary day to day to make HR pacing something I want to do. Consistency, volume, recovery, and hitting my hard days hard are not issues I’m facing at the moment.

TrainerRoad

80/20 Polarization Cutoff

Training

WindWarrior June 28, 2022, 7:28pm 39

Long discussion on LT1 here:

Topic		Replies	Views
Current polarized plan Training	26	1985	July 28, 2023
Polarized Training with Stephen Seiler, PhD \| EP#177 That Triathlon Show Training polarized	141	29587	November 3, 2020
Stephen Seiler (StephenSeiler) - his results Training ftp , polarized	128	11721	March 19, 2021
Polarized Zones Training	36	2327	March 22, 2023
Potential Polarized Plan Training polarized	78	5960	February 24, 2021

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