Metabolic profile

Calculate VLamax: classify lactate production rate and metabolic profile

Understand whether your metabolism is oriented more toward long distance, threshold performance or sprint power.

What does VLamax tell you?

VLamax describes how quickly your body can produce lactate. For long-distance athletes, a low value is often beneficial; for sprinters, a high value can be useful. It only makes sense in context with LT1, LT2 and sport.

Data for VLamax

  • Step-test profile with lactate curve
  • Optional: sprint test for better calibration
  • Sport and performance level for interpretation

What the analysis provides

  • VLamax estimate from your profile
  • Classification as endurance, power or sprint type
  • Pointers for pacing and carbohydrate use

How to use VLamax

1

Calculate profile

The app estimates VLamax in relation to your lactate curve and threshold performance.

2

Classify type

You see whether your profile fits long endurance or high short-term intensity.

3

Guide training

Base training, tempo work and sprint work can be planned more deliberately.

Why VLamax matters in triathlon

In long races, threshold is not the only limiter; carbohydrate use matters too. A lower VLamax can help preserve glycogen and stabilize the run after the bike.

Frequently asked questions

Can VLamax be calculated from a step test?

An estimate is possible, especially for profile classification. A separate sprint test can improve calibration.

Is a low VLamax always better?

No. For Ironman and marathon a low value is often favorable. For sprint and short-duration efforts, a higher value can support performance.

How is VLamax related to LT2?

VLamax affects carbohydrate use and where stable intensities settle. It should never be interpreted in isolation.

Read more and try it directly

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