Engines
VO₂max
VO₂max measures the body’s maximum aerobic capacity: the maximum amount of oxygen the body can utilize.
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The Full Metric Lists
The complete profile, metric by metric.
Every one of them comes out of the same test, and every one is read together with the others. Filter by what they describe, or scan the whole set.
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Engines
Aerobic & Anaerobic Energy Contribution
Aerobic & anaerobic energy contribution is the share of aerobic and anaerobic metabolism in your total power output or speed: the percentage of energy from each system, at any speed or power.
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Thresholds
Anaerobic Threshold (MLSS)
Maximal Lactate Steady State (MLSS) describes the highest exercise intensity, expressed as power or speed, at which blood lactate concentration remains stable over time.
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Thresholds
Lactate Threshold 1 (LT1)
When you ask people what is LT1, the answer usually be “The intensity at blood lactate begins to rise”.
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Fuel
FatMax
FatMax describes the exercise intensity at which the athlete reaches maximal fat oxidation (MFO), so basically the highest rate of fat combustion (in kcal or kJ) per minute or hour.
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Fuel
CarbMax
CarbMax describes the power output or speed at which an athlete combusts 90 grams of carbohydrates per hour.
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Fuel
Fat Combustion Rate
Fat Combustion Rate describes the rate at which an athlete uses fat to produce energy at a given exercise intensity.
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Fuel
Carbohydrate Combustion Rate
Carbohydrate Combustion Rate describes how much carbohydrate an athlete utilizes to produce energy at a given exercise intensity.
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Lactate dynamics
Lactate Production & Max Oxidation
In essence Lactate Production Rate and Lactate Oxidation Rate describe the interaction of glycolytic and aerobic metabolism.
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Lactate dynamics
Lactate Clearance Rate
Lactate Clearance Rate describes the rate at which accumulated blood lactate concentration can decrease at a given exercise intensity.
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Lactate dynamics
Accumulation Index
The Accumulation Index is a normalized benchmark that describes how quickly lactate accumulates once exercise intensity exceeds maximal lactate steady state (MLSS).
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Lactate dynamics
Recovery Index
The Recovery Index is a benchmark that combines two important aspects of recovery during exercise: how quickly an athlete can clear accumulated lactate, and which speed or power can the athlete sustain while doing so.
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Body & context
Economy
Economy describes the energy cost of locomotion: how much metabolic energy an athlete needs to run, swim, ski, row or otherwise move at a given speed.
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Body & context
Max Heart Rate
Heart rate is not a performance metric by itself in the same way as VO₂max, VLamax or thresholds are.
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Body waterPassive spaceActive muscle
Body & context
Body Composition
Body Composition describes how total body mass is distributed between components such as fat mass, muscle mass and body water.
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How you get them
One test. Three ways to run it.
Every metric on this page comes from the same profile, so the route you pick changes the equipment, not the result.
Field TestingLab-grade accuracy and quantity of data, in real world conditions. Any protocol, any sport: on the road, on the track, on the pitch, in the pool.Learn more Remote TestingAthletes test on their own, wherever they are. You analyze the data in INSCYD and deliver a complete assessment without being on-site.Learn more Lab TestingVO₂max, VLamax, substrate utilization, thresholds and training zones from the same lactate step test your lab already performs.Learn more
One number never tells the story.
One test shows all of them.
“We’ve built and run coaching businesses ourselves. And still do. We built INSCYD because we learned the hard way: training by FTP or critical power alone doesn’t cut it.”
Sebastian Weber · Founder, INSCYD · Coach to world champions in 5 sports Book a demo
