VO₂ Max Testing
Breath-by-breath gas analysis measures maximal oxygen use and identifies ventilatory transitions as workload increases.
Testing & Assessments
Performance
Assessment.
VO₂ Max, resting metabolism, body composition, PNOĒ metabolic analysis, and lactate testing—interpreted together to show how your body uses oxygen, produces energy, carries muscle and fat, and responds as intensity rises.
Direct measurementNot another wearable estimate
Rest + exertionTwo sides of energy demand
Body compositionMuscle, fat and distribution
Integrated reviewOne connected performance picture
Measure Before You Modify
Five data sets. One more useful baseline.
A VO₂ Max number alone cannot tell you how much energy you require at rest. Body weight cannot show whether change came from muscle or fat. A generic heart-rate formula cannot identify exactly where your metabolic response begins to shift.
The Performance Assessment brings the relevant measurements together so training, nutrition, recovery, and retesting decisions can start from your physiology rather than population averages.
The goal is not to generate the longest report. It is to identify the measurements that can change what you do next.
What Is Included
The complete performance picture.
Each component answers a different question. Together they show capacity, metabolic demand, body composition, and the intensity transitions most relevant to your training.
Resting Metabolic Rate
Indirect calorimetry measures baseline energy expenditure and resting fuel utilization instead of relying on a calorie equation.
InBody Analysis
Measure skeletal muscle, body fat, visceral fat, body water, and segmental distribution rather than using scale weight alone.
Lactate Testing
Small blood samples collected during staged exercise build an individual lactate profile connected to heart rate, pace, power, or workload.
PNOĒ Metabolic Analysis
Respiratory findings from rest and exertion are translated into a broader view of energy use, fuel selection, breathing, and exercise response.
Important distinction: PNOĒ is the cardiometabolic analysis system used to measure and interpret respiratory data. VO₂ Max and RMR remain distinct testing protocols within the overall assessment; PNOĒ connects their findings rather than duplicating them.
Why Combine the Tests
Performance is more than your maximum.
A maximal test shows the upper end of your aerobic capacity. The remaining assessments add the context required to understand what happens below that maximum: how much energy you use at rest, which fuels contribute under the measured conditions, where lactate begins to rise, and how much metabolically active tissue you carry.
- Connect maximal capacity with sustainable training intensity
- Compare measured resting needs with nutrition assumptions
- Separate muscle and fat changes from scale-weight changes
- Establish data that can be repeated after a training block
What You Receive
Numbers translated into direction.
Your results are reviewed as a connected performance profile, with clear explanations of what was measured and how the findings may inform your next step.
Measured aerobic fitness
Your directly measured VO₂ Max with appropriate context for your current baseline.
Individualized training zones
Heart-rate and workload guidance informed by respiratory and lactate transitions.
Measured resting expenditure
Your resting metabolic rate and fuel-use data under the testing conditions.
Muscle and fat distribution
A segmental view of skeletal muscle, fat, visceral fat, and body water.
PNOĒ performance insights
An integrated analysis of respiratory efficiency, fuel selection, and exercise response.
A repeatable baseline
A starting point for training decisions and objective reassessment after meaningful work has accumulated.
Your Assessment
What to expect.
Your team will provide preparation instructions before the appointment because food, caffeine, nicotine, recent exercise, hydration, and medications can influence selected measurements.
01 · BEFORE
Prepare
- Complete the required health and exercise screening
- Follow the fasting and caffeine instructions provided
- Avoid strenuous training for the directed period
- Bring comfortable exercise clothing and shoes
02 · MEASURE
Build the Baseline
- Complete resting measurements before exercise
- Measure body composition under standardized conditions
- Progress through the appropriate exercise protocol
- Collect respiratory, heart-rate, workload, and lactate data
03 · APPLY
Review the Results
- Connect findings across all assessment components
- Review capacity, thresholds, metabolism, and composition
- Clarify practical training and recovery implications
- Identify when reassessment would be meaningful
Assessment or Program
Start with the data—or continue into the Performance Program.
The Performance Assessment can stand alone for people who want a rigorous baseline. It also serves as the measurement foundation for the eight-week Performance Program, where the findings help guide aerobic work completed at home and the two weekly guided Longevity Gyms sessions.
Explore the Performance Program →Who It Is For
Not only for elite athletes.
This assessment is built for people who want training, nutrition, or longevity decisions grounded in direct measurement.
Recreational and competitive athletes refining training intensity
Adults establishing a cardiorespiratory-fitness baseline
People protecting muscle while changing body composition
Wearable users who want direct laboratory measurements
Individuals whose progress has plateaued despite consistent effort
Performance Program participants measuring before and after
Frequently Asked
Questions answered.
Is this one test or several tests?
It is a coordinated assessment made up of distinct resting, body-composition, exercise, respiratory, and lactate measurements. The value comes from interpreting those results together.
Is PNOĒ separate from VO₂ Max and RMR?
PNOĒ is the metabolic-analysis system used for respiratory testing and interpretation. VO₂ Max and RMR are separate protocols—one performed during progressive exercise and one performed at rest—within the larger assessment.
Do I need to be an athlete?
No. Exercise intensity progresses according to the selected protocol and your screened capacity. The assessment is useful whenever direct performance and metabolic measurements would improve decision-making.
Does lactate testing require blood?
Yes. It uses very small samples, generally collected from a fingertip or earlobe at defined stages of the exercise assessment.
Why include both RMR and InBody?
They answer different questions. RMR measures energy expenditure at rest. InBody estimates the distribution of muscle, fat, and body water. Neither substitutes for the other.
Can I repeat the assessment?
Yes. Repeating standardized measurements after an appropriate training or nutrition interval can help determine whether capacity, thresholds, metabolism, or body composition have changed.
Is maximal exercise testing appropriate for everyone?
No. Participation is subject to screening, and the testing protocol may be modified or deferred based on health history, symptoms, medications, or other relevant factors.
Will I receive a diagnosis or medical treatment plan?
No. This is a performance and metabolic assessment. Results may inform conversations with qualified health and fitness professionals but do not independently diagnose disease or replace medical care.
Your Baseline Starts Here
Stop training from assumptions. Start with what you can measure.
Combine aerobic capacity, resting metabolism, body composition, metabolic analysis, and lactate response in one connected Performance Assessment.
Start Your Upgrade →The Performance Assessment is an educational fitness and metabolic assessment, not a diagnosis or medical treatment. Participation is subject to appropriate screening. Testing protocols may be modified or deferred when indicated. Results depend on preparation, testing conditions, protocol selection, and individual physiology.