Yesterday morning I did the guided lactate threshold test on my 645M. I am not a fast runner at this point in my life and the test gave me a lactate threshold pace of 10:23 which sounds about right to me based on how I feel running faster and slower than that pace. It also gave a lactate threshold bpm of 78 bpm which doesn't sound remotely correct. For one thing I am above that heart rate standing up and waving my arms, for another, at a 10:23 pace, my heart rate is roughly double that. I would like to use %LT for training zones but 78 bpm gives ridiculously low and small zones. Am I missing something?
The same thing happened to me. To fix, go into the device settings, user profile, and remove (turn off) the running heart rate profile and just leave it on default. Ever since I did that, I have been getting accurate heart rates for the LT test.
Here is another thread where this issue is mentioned.
What is your max HR? Lactate threshold is 75-90% of your max HR. A lactate threshold of 178 at 75‰ puts your max HR at 237. A well conditioned runner is usually around 90%. So, 178 at 90% would put your max HR at 196.
The same thing happened to me. To fix, go into the device settings, user profile, and remove (turn off) the running heart rate profile and just leave it on default. Ever since I did that, I have been getting accurate heart rates for the LT test.
Here is another thread where this issue is mentioned.
