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Training science

Understanding VLamax: endurance type or sprinter?

KH
Kristian Hoffmann
Founder, LactateThreshold
Updated: 6 min read

VLamax is one of the most misunderstood lactate metrics. It explains how quickly your body can produce lactate and use carbohydrates.

Why this matters

VLamax only makes sense together with LT1, LT2, sport and event duration. A high value is not automatically good or bad.

What to record

For every useful lactate analysis, intensity and lactate must be linked clearly. Record pace or watts, mmol/L value, heart rate if available and the stage duration.

  • Pace or watts for each stage
  • Lactate in mmol/L
  • Optional heart rate and RPE
  • Test conditions such as heat, altitude, sleep and nutrition

Check VLamax profile

Analyze your step test for free: LT1, LT2, VLamax and 5 training zones are calculated immediately.

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How to interpret it

Look at the curve, not only at one value. LT1, LT2, VLamax and zones become more reliable when the protocol is repeatable and the curve shape is plausible.

  • Low VLamax can support long-distance endurance
  • High VLamax supports short explosive work
  • Sprint tests are more precise than step-test estimates
  • Interpret VLamax together with thresholds

Practical next step

Use the same protocol for future tests and compare trends instead of overinterpreting one isolated result.

Start lactate test analysis directly

If you already have values, go to the central analysis page or start the demo with example data.

Analyze your values PDF protocol

Why you can trust the analysis

LactateThreshold does not turn measurements into false precision. The app shows the curve, method comparison, plausible thresholds and the limits of your test protocol transparently.

Read methodologyDisclaimer
Method comparison instead of a single black-box value
Clear separation of LT1, LT2, VLamax and training zones
Limits of self-testing are stated openly
Training guidance, not a medical diagnosis

Frequently asked questions

Can I use my own lactate values?+
Yes. Enter pace or watts and lactate values from each stage. The app calculates the curve, thresholds and zones.
Do I need a lab?+
No lab is required for the software analysis if your measurements are clean. Medical diagnostics are a separate use case.
Which meters work?+
Any portable meter that reports mmol/L values can be used, including Lactate Pro 2, Lactate Plus, Lactate Scout and Lactate Express.

Check VLamax profile

Start directly with the demo, no account required.

Check VLamax profile

Read next

How to run your own lactate test: the complete guide

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Lactate Pro 2 vs. EKF Lactate Scout Sport

Both meters are proven options for field testing. The right choice depends on workflow, sample volume, cost and availability.

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