Zone 2 Power vs Zone 2 HR (Should I increase power to move HR to Z2?)

[WindWarrior]

Are you following TR road plans? There are threads discussing optimizing endurance training, however they generally focus on non-TR plans that prioritize endurance training over intervals.

This is one of several attempts I’ve made to summarize the different philosophies of optimizing endurance training:

Calculating LT1 and LT2 approximately without a blood test?

I think the most important question to answer is - if you repeatedly did lab testing and periodically had good estimates of LT1, how would you use it to guide endurance training? Summarizing the thread as follows, there are several camps or schools of thought: “keep stress low” camp that aligns with Seiler’s polarized recommendations to train endurance below the low aerobic threshold (where ‘mostly fat’ fuel switches to fat+carb fueling). Based on the ‘you are training endurance too hard, an…