I measure with consistency high resting and Z1 lactate level around 2mmol/L.
Typically, looking for LT1 (with VT1 estimated at 126bpm, 125w during a VO2Max in Jan 2023), I started the test at 80w and did 10’ steps, 10 watt increase. Before starting, lactate is 2.2mmol/L, and then dropped and stayed around 1.8 until I reached 130w step and stopped at 2.6mmol.
I wasn’t expecting something values below 1mmol at rest or Z1 based on my readings. How does this sound to you and can be interpreted? Is that something I should investigate or work on? Or just consider it as my physiological baseline and don’t worry about it?
Thanks for your feedback
I’m far from expert, i’ve done some 30 tests on myself. What i’ve come to understand thus far:
- Diet before test. If testing just up into LT1 it might be good idea to be done fasted. High carb diet can raise lactate levels, if i recall correctly.
- Endurance base, high level endurance athletes do have much lower lactate values at rest than so-called normal people. But your lactate dips, which is supposed to be one sign of good endurance base.
- 2.2mmol/L is with-in normal limits, on upper threshold but still with-in normal range.
But i have to put emphasis on the fact that i’m quite the novice when it comes to lactate testing.
Do you have the actual data from the test, power, hr and lactate for each step? or a fit file for the power and heart rate and then send the lactate numbers?
you can email them to steve at stevenealperformance dot com
Hi @steveneal, yep I will share that by mail over the weekend. Thanks!
@steveneal I had a similar question. I just did a lactate test to help a teammate with his student’s research. My resting was 2.0, and I was 2.0 up to around 162 BPM then it started to increase. I’m not as fit as I was a few years ago, but I still did 400+ hours the last few years and did 42 hours in January, so I’m not sedentary either.
My main question was that I had been doing Z2 work below 137 BPM, but this is suggesting my Z2 goes to 160ish?
@alexis24 what email did you use to send your data from?
@thom2544 can you please send all the data you have to my email steve at stevenealperormance dot com
I can’t seem to find anything in a search in my email thanks.