Pair workload and lactate for every stage
An interpretation requires at least intensity and lactate concentration at each workload. Use watts for cycling and pace or speed for running. Heart rate is optional but can help monitor the resulting zones in ordinary training.
- Lactate in mmol/L at the end of each stage
- Watts, pace or speed for the same stage
- Optional heart rate, RPE, stage duration and test conditions
- At least five stages, preferably seven to nine
Why one value does not identify a threshold
A reading of 4 mmol/L can lie near LT2 for one athlete and above or below it for another. The relationship between workload and lactate across the test makes LT1, LT2 and plausible zones interpretable.
Analyze values
Analyze your step test for free: LT1, LT2, VLamax and 5 training zones are calculated immediately.
Try free nowRead the pattern across stages
The source describes a relatively flat opening section, a first rise around LT1, a steeper region near LT2 and rapidly increasing final stages. These features must be read together with the workload increments and measurement quality rather than assigning a threshold to an isolated high value.
From measurement table to pace or watt zones
Enter the paired stage values into LactateThreshold. Comparing several methods, the curve-quality view and the resulting ranges provides more context than the raw table alone. Check a result that disagrees sharply with the surrounding data before using it in training.