Built-in Accuracy check
Every physiological measurement comes with a degree of error. And once raw data is used to calculate lactate curves, VO₂ values or other physiological metrics, that error propagates into the final result.
The problem: this error propagation is complex and not visible in conventional performance testing. Yes, you do get results – but you don’t know how reliable the numbers actually are.
INSCYD calculates how measurement errors propagate and shows their impact as part of the assessment.
So you don’t just get a result – you see how accurate a result actually is.
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From national federations and Olympic programmes to WorldTour teams and professional clubs worldwide.
Individual accuracy for every key performance metric
Not every physiological metric is affected equally by error and noise in the raw test data. That’s why INSCYD calculates the expected accuracy of each key performance metric individually.
To put these results into context, the expected error is compared with scientific gold-standard accuracy and real-world laboratory testing.
A red light is not hidden. It tells you to review the raw data, or re-run the test under controlled conditions and check the equipment setup.
Expected error is within the lowest ranges reported in scientific literature.
Expected error is comparable to conventional testing in commercial or clinical laboratory settings.
Expected error exceeds the range typically seen in conventional laboratory testing.
Cross-validation – Is the data consistent?
Beyond checking measurement accuracy, INSCYD also checks whether your data makes physiological sense as a whole.
Conventional testing often treats individual measurements separately. This can create contradictions – such as a substantially higher VO₂max without the expected changes in lactate or substrate utilization, or a higher VLamax without corresponding sprint performance.
INSCYD connects all metrics within one coherent physiological model. Inconsistencies can therefore be identified and even quantified.
If the data fits, you know it. If it doesn’t, INSCYD flags it.
Cross Validation
Calculated vs measured power for VLamax, VO₂max, and Critical Power. Points on the diagonal indicate a perfect model fit.
See how the calculated and measured data match
INSCYD doesn’t just provide the full metabolic profile – it lets you look into it.
Compare your measured lactate and VO₂ data directly with INSCYD’s calculated values and see how closely the model matches your actual test data.
You can also explore how oxygen uptake and lactate concentration develop throughout the test, giving you deeper insight into the kinetics behind the final results.
Time Series: load-based lactate & VO₂ kinetics
