I'm trying to make sense of the following "disrecpancy" in my Lactate Threshold Heart Rate (LTHR) in cycling and what I observed in racing:
I did the long FTP test on zwift.
Results:
Average HR for the 20' all out effort = 170bpm
Minus 5% to get an appromixation of LTHR = 161bpm
So my understanding is that "theoritically", I should be able to hold on average 161bpm on an all out 1h effort.
I rested for a few days and raced on zwift and ended up averaging 163bpm for 1h17 racing time.
Two things I can think of:
1. Shall I assume that I should/could have pushed harder/better/stronger on the FTP test to raise my heart rate higher on the 20min all out effort?
2. Taking 5% off of the average HR for the 20' all out effort is not an accurate estimation? The other field test I can think of is the 30' all out solo effort and take the avg of the last 20'. I feel this would give a better estimate but does require another field test on top of the 20' all out FTP test.
I did the long FTP test on zwift.
Results:
Average HR for the 20' all out effort = 170bpm
Minus 5% to get an appromixation of LTHR = 161bpm
So my understanding is that "theoritically", I should be able to hold on average 161bpm on an all out 1h effort.
I rested for a few days and raced on zwift and ended up averaging 163bpm for 1h17 racing time.
Two things I can think of:
1. Shall I assume that I should/could have pushed harder/better/stronger on the FTP test to raise my heart rate higher on the 20min all out effort?
2. Taking 5% off of the average HR for the 20' all out effort is not an accurate estimation? The other field test I can think of is the 30' all out solo effort and take the avg of the last 20'. I feel this would give a better estimate but does require another field test on top of the 20' all out FTP test.