Illustrative data · 01
Running
Threshold pace and heart rate in one usable result.
LT24:08 /km
Your lactate test.
Clearly interpreted.
LT1184 WAerobic threshold
Illustrative dataLactateThreshold
LT1184 WLT2254 W
Your zones
Easy100–148 W
Tempo184–219 W
Threshold220–254 W
Turn measured stages into defensible thresholds, useful training zones and progress you can actually act on.
Start free · no credit cardFrom stages to direction
One test. One clear training decision.
Running, cycling or triathlon: see more than a curve – see what it means for your training.
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Illustrative data · 02
Cycling
Power, lactate and training ranges brought together clearly.
LT2254 W
Illustrative data · 03
Triathlon
A defensible foundation across multiple disciplines.
LT23.9 mmol/l
01 / 03
Images generated with AI. Product data is illustrative.
More than one formula
Multiple methods. Compared transparently.
See where models agree and where interpretation matters.
Compare methods- Mod. DmaxCurve-based inflection point
- Log-PolyPolynomial curve fitting
- DickhuthIndividual baseline
- DeltaRise from baseline
- MaderFixed 4-mmol/L threshold
- IndividualYour preferred reference
Your data
12 weeks
Everything your measurements become
Analysis that keeps moving with your training.
01 · 7 Validated Methods
See thresholds. Understand uncertainty.
Log-Poly-ModDmax (Jamnick 2018), Modified Dmax (Bishop 1998), Dickhuth, Delta, Mader — each with literature references.
Compare methodsMod. Dmax254 WReference
Log-Poly251 W−3 W
Dickhuth247 W−7 W
Mader258 W+4 W
Metabolic Profile
01Recovery100–148 W
02Endurance149–183 W
03Tempo184–219 W
04Threshold220–254 W
02 · LT1-Anchored Zones
Plan ranges. Dose the effort.
Z2 ends at your measured LT1 (San Millán & Brooks 2018), not at a fixed Coggan percentage.
Metabolic ProfileVO₂max × VLamax quadrant chart after Mader & Heck 1986 — VLamax from your sprint test: Sprinter, Power, Diesel or Base?
Calculate zonesMLSS Calibration+3.8%LT2 · 12 weeks
03 · Progression with Significance
Do not guess progress. Compare it.
Error propagation checks whether your improvement exceeds measurement noise — 95 %, 68 %, or not significant.
MLSS CalibrationGold-standard validation: rank all 6 methods against your own MLSS constant test. (Lab tier)
Lactate test analysisBuilt around your work
One system. Three perspectives.
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03
Lab
Link MLSS constant-load tests to step tests and compare methods for your own profile or your athletes.
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Simple Pricing
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FREE
0€forever
- LT1/LT2 Calculation
- Training Zones
- Chart Visualization
- Save 2 tests
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ATHLETE
19,99€per year
- Everything in Free
- Permanent data storage
- VLamax Calculation
- Race Strategies
- Progression Tracking
- AI Interpretation
- PDF Export
COACH
49,99€per year
- Everything in Athlete
- Manage Athletes
- View Athlete Dashboards
- Progression & comparison per athlete
- Team Overview
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LAB
79,99€per year
- Everything in Coach
- MLSS calibration (gold standard)
- Per-athlete method ranking
- MLSS criterion check (Beneke 2003)
- Interactive 6-method comparison
- Metabolic profile (VO₂max × VLamax)
Read and prepare
Go straight to the right lactate test analysis
Fast entry points for runners, cyclists, triathletes, coaches, and anyone calculating threshold values from test data.
01
Lactate test analysisThe central page for step-test values, LT1, LT2, VLamax and training zones.
Open02Analyze lactate testEnter step-test data and calculate LT1, LT2, VLamax, lactate curve and zones online.
Open03PDF protocolMeasurement sheet and step-test template for cycling and running before online analysis.
Open04Analysis methodologyUnderstand method comparison, data quality, LT1, LT2 and limits of self-testing.
Open05Calculate thresholdDetermine aerobic and anaerobic threshold from lactate values instead of percentage formulas.
Open06Calculate zonesDerive pace and power ranges from LT1 and LT2 for more precise training.
Open07Calculate VLamaxInterpret lactate production rate and metabolic profile for endurance, threshold and pacing.
Open08For runnersEstimate lactate threshold, marathon pace and training zones from pace and lactate values.
Open09For cyclistsAnalyze LT1, LT2, power zones and FTP comparison from indoor or outdoor tests.
Open10For triathletesDerive Ironman and 70.3 pacing from bike and run lactate test data.
Open11Compare methodsCompare Log-Poly-ModDmax, Modified Dmax, Dmax, Dickhuth, Delta and Mader transparently.
Open12Understand termsClear explanations of lactate threshold, LT1, LT2, MLSS, step tests and VLamax.
Open13Run your own testStep-by-step guide for test protocols, lactate meters and analysis without a lab.
OpenFree PDF template
Get PDF protocolLactate test protocol PDF
Use the template for your next at-home test: preparation, bike and run protocol, measurement sheet and analysis steps in one document.
Before your first test
Frequently asked questions about lactate test analysis
Answers to the most important search questions about lactate threshold, step tests, meters and training zones.
Can I analyze my lactate test myself?
Yes. Enter power or pace, lactate values and optional heart rate from your step test. LactateThreshold calculates LT1, LT2 and individual training zones.
Which lactate meters are supported?
The analysis works with any meter that gives lactate values in mmol/L, including Lactate Pro 2, Lactate Plus, EKF Lactate Scout, Lactate Express and similar portable devices.
What is lactate threshold?
Lactate threshold describes an intensity where lactate production and clearance become important for endurance performance. LT1 helps define easier endurance work, while LT2 is close to your highest sustainable intensity.
How do I run a step test myself?
Start at a low intensity and increase every 3 to 5 minutes, for example by 20 to 30 watts or 20 to 30 seconds per kilometer. Measure lactate at the end of each stage and enter the values.
What do LT1 and LT2 mean?
LT1 marks the transition into measurable lactate accumulation and helps guide Zone 2. LT2 is closer to threshold performance and is central for tempo, FTP and race pacing.
Which calculation methods does LactateThreshold use?
The app compares 6 scientific methods: Log-Poly-ModDmax, Modified Dmax, Dmax, Dickhuth, Delta and Mader. You see not only one value, but also the methodological spread of your result.
Your next analysis starts with the measurements.Start analysis