The HYROX Metabolic Project
Our performance testing combines metabolic profiling and INSCYD Power–Performance Diagnostic (PPD) modelling to identify the physiological systems that limit your performance. Whether tested in-person using lactate analysis or remotely via structured PPD protocols, the outcome is the same: precision training built around your physiology.
Why Physiology Matters in HYROX
Improved Performance is achieved from an understanding of what limits you. HYROX demands sustainable power across running and strength elements where your metabolic systems decide your race outcome.
Our Metabolic Project pairs metabolic profiling with targeted planning so you know exactly:
How your body creates energy at every pace
Where your aerobic system is strong or weak
Whether your lactate production vs clearance is optimised
What training actually moves your threshold forward
That means no guesswork, no generic plans — just a data-driven blueprint to close your performance gaps.
From Data to Performance
1. Precision Physiology Testing
We test your aerobic and anaerobic systems using lactate profilin either in our lab or via the ‘Virtual Lab’ using INSCYDs PPD that provides the same level of accuracy as lab testing, done remotely via a field test protocol.
Your unique lactate profile tells us where your body shifts from fat to carbohydrate energy and how quickly lactate accumulates.
2. Expert Analysis & Interpretation
You don’t just receive numbers. We explain your results in a guided consultation, pinpointing which physiological mechanisms hold you back (e.g., high lactate production, low aerobic capacity).
3. Bespoke 12 Week Training Block
We build a personalised plan that directly addresses your profile:
Strengthen your aerobic engine
Improve threshold sustainability
Reduce unnecessary lactate accumulation
Train at the correct intensities for maximal adaptation
Every session is programmed against your biology, not generic percentages.
Two Testing Pathways — One Outcome
We offer two validated testing routes depending on location and logistics. Both feed into the same INSCYD performance model and deliver the same actionable insights.
In-Person Metabolic & Lactate Testing (Local Athletes)
For athletes based locally, testing is conducted in person using:
Blood lactate analysis
Progressive intensity protocols
This allows direct measurement of metabolic responses and highly controlled testing conditions.
Remote INSCYD PPD Testing (All Athletes)
For athletes unable to attend in person, we use the INSCYD PPD protocol, completed in your own training environment using structured maximal efforts and uploaded files.
This method provides highly accurate modelling of:
VO2max
VLamax
MLSS / Threshold
Fatigue resistance
The physiological outputs are equivalent — only the data collection method differs.
Stop guessing. Identify your limiter. Train with purpose.
What You Get
Full metabolic profiling (VO₂max, VLamax, Thresholds)
Detailed analysis discussion with a coach
Bespoke 12 week training block
Race pacing & fuelling guidance
Data–driven intensity prescriptions
One-Off Price: £299
What happens after 12 weeks? Physiology changes. Once you complete the block, your engine will be different. You can simply purchase a "Reload Block" (Re-test + New Plan) to continue your progression.
FAQs
Frequently Asked questions
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Both methods lead to the same physiological outcomes and training guidance.
In-person testing uses blood lactate sampling and controlled intensity steps.
Remote PPD testing uses structured maximal efforts completed in your own environment and analysed using INSCYD modelling.
The difference is how the data is collected — not what we can determine from it.
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If you’re local and can attend in person, lactate testing offers a highly controlled environment.
If you’re remote or prefer flexibility, PPD testing provides excellent accuracy when the protocol is followed.If you’re unsure, book the main testing option and we’ll confirm the best route.
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For remote PPD testing you’ll need:
A GPS watch (Garmin, Coros, Polar, etc.)
The ability to record and upload .FIT or .TCX files
In-person testing equipment is fully provided.
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The full PPD protocol is relatively short and can be completed:
In a single session
Or split across 1–3 days if needed
In-person lactate testing typically takes 60–90 minutes.
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You’ll receive:
A full physiological performance profile
Accurate thresholds and training intensities
Identification of your key performance limiter
A 1-to-1 results consultation
Clear guidance on how to train differently
You are not left alone with the data.
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Single-metric tests estimate performance from one effort.
PPD and metabolic testing:
Model your entire performance curve
Separate aerobic limits from lactate limitations
Explain why you fatigue, not just how fast you are
This allows far more precise training decisions.
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All data is quality-checked using INSCYD’s validation system.
If accuracy is insufficient, we will ask you to repeat part or all of the test to ensure reliable results.
We prioritise correct answers over convenience. -
No. The protocol is scalable and suitable for:
Intermediate to advanced athletes
HYROX, triathlon, and endurance competitors
If you have medical concerns, contact us before booking.
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Yes, this is particularly valuable for self-coached athletes.
It provides objective clarity on:
What to prioritise
Which sessions matter most
How hard you should actually train.
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Absolutely. Many athletes share their results directly with their coach to improve training accuracy and communication.