Can you determine LTHR from the ramp test? I’m about to start base training and want to track efficiency factor on my endurance workouts before progressing too soon.
I would have thought it would be difficult as your HR does not get a chance to level out, rather it is continuously rising during the test
That’s my thinking as well. Going to stick with the 20min test.
You could get a good estimate from a longer test duration but variables like temperature, cooling, stress, sleep etc will all need to be factored.
You should not estimate LTHR from a 20 minute test either. A 20 minute all out effort is above threshold.
Last 20 minutes of a 30 minute steady state maximum effort will be close to LTHR.
I was going on the information in Joe Friel’s latest Cyclist’s Training Bible. He recommends a 20 min test for FTHR (which I’m guessing is the same as or very close to LTHR) which you subtract 5% from. He also recommends the 30min test(which as you say the average is you FTHR) but says that the 20min test is ‘preferred’.
I really wish there was one agreed way to test. It would make life so much simpler!