Performance Testing

Know your numbers before you train around them.

Why Testing Matters

A measured baseline beats a guess.

Training zones based on a guess, an old FTP test, or a formula built for a different athlete waste months of otherwise good training. Testing replaces the guess with a measured baseline — and gives us something concrete to re-test against as fitness changes.

Test Types

Five ways we measure your physiology.

Lactate Testing

A staged effort test measuring blood lactate at increasing intensities — the most direct way to locate your real training zones and threshold.

FTP Testing

Functional Threshold Power, tested properly rather than estimated from a ramp test alone.

VLaMax

A measure of your maximal glycolytic rate — critical for knowing whether to train top-end power or sustained threshold.

VO2 Profiling

Aerobic capacity and efficiency at increasing effort — the ceiling your training is working within.

Performance Profiling

Bringing lactate, power, and VO2 data together into one profile — the basis for the season's training zones.

What You Receive

A report you can actually use.

  • A full written report of your results
  • Training zones recalculated from your actual data
  • A plain-language summary — what the numbers mean and what changes because of them
  • A recommended retest timeline, so testing stays a routine check-in rather than a one-off
Sample readiness and health monitoring dashboard from intervals.icu

Ready to find your real numbers?

Book a Test