Ok, so following are my two latest LT stage tests. They both took place on my personal treadmill under the same conditions (as far as I could).
I was fasted for multiple hours prior to the test. No caffeine on the day. Both tests took place in/after a deload week.
Same warm up for both tests (easy progressive 4 km). I wore the exact same kit on both tests.
I have run nothing but easy mileage, long runs and sub threshold workouts in between the tests. Most of the workouts were done on the treadmill, except a few shorter repeats which I have done outdoors.
Test Date: 25/06/2023
Temperature = 23.1 degrees Celsius
Relative Humidity = 39.1%
Baseline = 0.9 mmol/L
Stage / Avg Speed [km/h] / Lactate [mmol/L]
WU / 10.5 (10->12) / 0.9
1 / 13.9 / 1.8
2 / 14.4 / 1.6
3 / 15 / 2.1
4 / 15.6 / 2.2
5 / 16.3 / NA (Not Enough Blood)
6 / 16.3 / 4.8
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Test Date: 16/08/2023
Temperature = 21.9 degrees Celsius
Relative Humidity = 43 %
Baseline = 1.4 mmol/L
Stage / Avg Speed [km/h] / Lactate [mmol/L]
WU / 10.5 (10->12) / 0.4
1 / 13.9 / 1.0
2 / 14.4 / 1.0
3 / 15 / 1.5
4 / 15.6 / 2.0
5 / 16 / 2.4
6 / 16.3 / 3.8
*Notes:
1) Each stage lasted 7 minutes (except the warm up, of course).
2) The speed of the 5th stage is different between the tests by 0.3 km/h. I was not able to take a reading at 16.3 km/h in the first test so I repeated the same speed for the 6th stage. I've run a slower 5th stage during the second test to have more insight on the difference pace makes.
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This is the summary. I can attach an excel sheet with plots of the lactate curves, as well as the heart rate information if anyone is interested.
I have not even run three workouts per week, just two.
The system works.