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INSCYD for elite sport

Lab-grade performance assessment, where you train and compete

Of course you can test in the lab. But with INSCYD you get more data with the same accuracy and with less time, all from testing in real-world conditions. On the field, in the water, on the pitch.

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Sports scientist taking blood lactate samples from a group of elite swimmers at the pool edge

VO₂max

60ml/min/kg

VLamax

0.5mmol/l/s

FatMax

410kcal/h

Fat & carb combustion

Trusted by the best in sport, and far beyond it

From national federations and Olympic programs to professional teams and universities worldwide.

The physiological changes you can't see

You don't get all the metrics that affect performance from traditional performance testing. The ones you do get take too much time and effort to track often enough. And the closest you can get is a lab test, but that doesn't transfer well to real-life conditions.

Athletes waiting around in a testing lab, losing training time

See the whole physiology of every athlete

See all relevant physiological data in one place, and quickly identify which metrics matter for each athlete. At a glance, you can see where an athlete’s strengths and weaknesses are, and which physiological parameters need to be worked on in training.

Marco Rossimale Test ID#88214 DateMar 12, 2026 TypeLactate SportTriathlon · Cycling ⇆ Change Test

VO₂max

60.2ml/min/kg

Max. aerobic power

454W

MLSS

281W

LT1

196W

VLamax

0.52mmol/l/s

W′

20.9kJ

FatMax

410kcal/h

MFO

455kcal/h

CarbMax

187g/h

Glycogen

486g

Max. lactate clearance rate

0.68mmol/l/min

Economy

12.8ml/min/W

Fat & carbohydrate combustionfatFatMax zonecarbohydrate

watt

Metabolic fingerprint

Limiter · VLamax

Lactate: clearance & accumulation ratelactate clearancela-accumulation

watt

Physiology-based training zones

Zone	Target	Physiological Conditions
FatMax	Power207[watt]	Lactate con.1.4[mmol/l]	Fat47[g/h]	Carbohydrates82[g/h]	AT63[%]
3min @ 90% VO₂max	Power500[watt]	VO₂max87[%]	AT153[%]	aerobic76.8[%]	anaerobic23.2[%]
800m - lactate 8	Pace03:06[min:sec/km]	VO₂max86[%]	VLamax13[%]	aerobic79.2[%]	anaerobic20.8[%]
30" Sprint -50% anaerobic	Pace02:44[min:sec/km]	VLamax25[%]	Lactate acc. rate6.3[mmol/l/min]	aerobic50[%]	anaerobic50[%]

Your athlete. Your sport. Your test protocol.

Imagine you could design a test protocol: what would it entail? Efforts you prescribe already in training, so it doesn't require additional test time? Efforts that simulate race conditions? Or just the most time-efficient protocol to get all data? Whatever protocol you would like to use for your athletes, you can use it now.

Based on training

Efforts you already prescribe in training. Minimal amount of extra time.

Race simulation

Efforts that mirror race demands blended in any protocol.

Time-efficient

Usually less than 30 minutes.

Testing conditions might change. Validity and comparability don't.

Wind, current, temperature, snow conditions, you name it. Testing outdoors in real-world conditions always created data which wasn’t reproducible, and therefore basically useless.

Until now.

With INSCYD your test results become totally independent of the conditions. Test today in cold temperature and windy conditions, and in warm and mild conditions later? You will be able to compare the results 1:1, no caveat, no limitations.

WindCurrentTemperatureSnowAltitude

A digital twin to create performance projections

Did you ever dream of knowing with certainty what limits the physiological performance of your athlete? INSCYD is not only providing all performance-relevant metrics, it can also show you how those interact with each other and enable performance.

An elite runner photographed in the lab, the athlete the test was run on — **The athlete you tested***Measured metabolic profile*

Performance projectionLive

VO₂maxaerobic power

VLamaxglycolytic power

Economycost of speed

Body compfat mass

current testprojectionfatcarbohydrateFatMax zonelactate recoverylactate accumulation

Solid line, the test you ran. Dashed line, the athlete you are training towards. Drag any slider.

The same runner rendered as a digital twin, a glowing holographic wireframe of the same body — **His digital twin***Projected metabolic profile*

The physiological data which you can actually act on

From a squad test day to tomorrow’s interval session, every decision below runs off the same metabolic test.

Fueling in Training & Racing

Fueling to maximize performance and training adaptation.

See how many grams of carbohydrate and fat an athlete burns at every intensity, and build the fueling plan based on those numbers.

Fuel to perform: ensure carbohydrate availability for high-intensity workouts.
Train at a high fat combustion rate to apply an additional aerobic stimulus.
Create a fueling and pacing strategy to ensure an athlete doesn't run out of fuel during races.

Triathlete taking an energy gel while riding his TT bike

Fat & carb combustion

FatMax

355kcal/h

CarbMax

204W

Physiology-based Interval Training

Build intervals around the system you want to change.

The duration and intensity of the work phase shape the physiological response during interval training, but the recovery phase is just as important, if not more so.

Define intensity based on the physiological system you want to target, for example, prescribe VO₂max intervals as a percentage of VO₂max rather than extrapolating from threshold.
Design the off-phase to allow lactate and pH to recover to the desired level before the next interval.
By altering the metabolic baseline conditions, you can maintain or shift the specific training stimulus across subsequent intervals.

Cross-country skier mid-stride in classic technique

Lactate: clearance & accumulation

Recovery index

7.4

Performance limiters

See what limits performance

With all relevant physiological metrics in one view, you can identify what is limiting performance and determine exactly what to target in training. For example:

Quantify exactly how greater glycolytic capacity improves sprint performance and reduces the speed of lactate accumulation.
Quantify exactly how a higher VO₂max increases fat oxidation and reduces lactate accumulation at a given intensity.
Quantify exactly how improved economy translates into higher running or swimming speeds at the same physiological cost.

Metabolic fingerprint

Limiter · VLamax

VLamax

0.52mmol/l/s

Physiology-Based Zones

Zones built on physiology, not extrapolated from threshold.

Zones extrapolated from threshold don't create the same training stimulus for every athlete. Instead, build zones from each athlete's individual metabolism.

Define zones based on physiological markers such as FatMax, VLamax, lactate concentration, or VO₂max rather than extrapolating from thresholds.
Define specific efforts by combining intensity with duration or distance to create the desired training stimulus.
See how other physiological systems respond in each zone, such as the aerobic–anaerobic energy split or carbohydrate combustion rate and others.

Zone	Target	Physiological Conditions
FatMax	Power207[watt]	Lactate con.1.4[mmol/l]	Fat47[g/h]	Carbohydrates82[g/h]	AT63[%]
3min @ 90% VO₂max	Power500[watt]	VO₂max87[%]	AT153[%]	aerobic76.8[%]	anaerobic23.2[%]
800m - lactate 8	Pace03:06[min:sec/km]	VO₂max86[%]	VLamax13[%]	aerobic79.2[%]	anaerobic20.8[%]
30" Sprint -50% anaerobic	Pace02:44[min:sec/km]	VLamax25[%]	Lactate acc. rate6.3[mmol/l/min]	aerobic50[%]	anaerobic50[%]

Born in science.
Proven in science.

INSCYD is built exclusively on peer-reviewed literature - no statistical models, no black-box AI. All output metrics INSCYD provides have been scientifically validated, with independent studies repeatedly demonstrating gold-standard accuracy. For example, VO₂max derived without a metabolic cart has been shown to be indistinguishable from values measured with validated gas-analysis protocols.

Hover a study, click to open the paper

All physiological performance data in one secure place

Built for modern elite sport organizations, INSCYD centralizes physiological performance data across teams, departments, and locations. Cloud-based access, role-based permissions and encrypted data enable secure collaboration across your entire performance environment.

All data in one place

Every test, every athlete, every metric. One source of truth for the whole organization.

Cloud based, across all locations

Altitude camp, home base or race hotel, the data is always accessible.

Multiple users and permissions

Individual access across stakeholders.

Secured

Data is encrypted at rest and in transit, and hosted to banking- and healthcare-grade security standards.

Support

Guided onboarding, in-app video and tooltips, expert consultation calls and a detailed help center.

Device agnostic

Works with the equipment you already use.

The people already training on physiology

“It’s one of the most innovative things in sport science that I’ve found in recent years. If you’re not on the forefront of technology and exercise science, you’re going to get left behind.”

Parker SpencerHead Coach, USA Triathlon Project Podium

“INSCYD enables us to precisely capture key performance metrics of the energy metabolism of our swimmers.”

Dr. Alexander TörpelHead of Diagnostics, German Swimming Federation

“I am convinced by the effectiveness of INSCYD to improve performance. It has proven to be a very powerful tool for us.”

Dr. Philippe HellardHead of Research, French Swimming Federation

Lab-grade performance assessment, where you train and compete

Trusted by the best in sport, and far beyond it

The physiological changes you can't see

See the whole physiology of every athlete

Your athlete. Your sport. Your test protocol.

Testing conditions might change. Validity and comparability don't.

A digital twin to create performance projections

The physiological data which you can actually act on

Fueling in Training & Racing

Physiology-based Interval Training

Identify performance limiters

Physiology-Based Zones

Fueling to maximize performance and training adaptation.