VO2 Max Testing Berlin: The Ultimate Longevity Biomarker

Measuring VO₂max in Berlin: Why This Value Matters for Fitness, Health, and Longevity

Your smartwatch shows you a value for cardiovascular fitness. Your physician measures blood pressure and cholesterol. All of these values can provide useful information. One of the most meaningful functional markers for long-term health, however, is maximal oxygen uptake: VO₂max. This value is not just a sports metric. It is an important biomarker for cardiorespiratory fitness and physical resilience. If you are considering measuring your VO₂max in Berlin, this article gives you the essentials.

We explain what VO₂max really means, why the scientific evidence is strong, and how an accurate measurement works. You will also learn why the estimated value from your watch can be useful for rough trend tracking, but is not sufficient for medical decisions.

What Is VO₂max? Definition and Basics

VO₂max stands for maximal oxygen uptake (volume of oxygen, maximal). The value describes the maximum amount of oxygen your body can take in, transport to the muscles, and use for energy production during intense physical exertion. It is expressed in milliliters of oxygen per kilogram of body weight per minute (ml/kg/min).

VO₂max is the result of a chain of physiological processes:

Lung function: The ability of your lungs to take oxygen from the air.

Cardiac performance: The capacity of your heart to pump oxygen-rich blood into circulation.

Oxygen transport: The efficiency of your red blood cells and blood vessels in transporting oxygen through the body.

Muscular utilization: The ability of your muscle cells to take up oxygen from the blood and use it in the mitochondria for energy production.

A high VO₂max suggests that this chain works efficiently. A low value may indicate that one or more parts of the system are limited, for example due to low training status, cardiac factors, pulmonary factors, blood markers, or muscular capacity.

VO₂max vs. Other Fitness Markers

Resting heart rate and lactate values are common fitness markers, but they measure different things.

A low resting heart rate often reflects a well-trained heart, but it says only a limited amount about your maximal performance capacity. The lactate threshold indicates the intensity at which your body begins to accumulate lactate more strongly. This is an important value for training guidance. VO₂max, by contrast, describes the upper limit of your aerobic capacity.

The relative value (ml/kg/min) is especially useful because it accounts for body weight. A tall, heavier person may have a high absolute oxygen uptake. Relative to body weight, however, aerobic efficiency may still be lower than in a lighter, very well-trained person.

Why VO₂max Is One of the Most Important Longevity Biomarkers

Numerous large studies show that cardiorespiratory fitness, often measured or estimated through VO₂max or METs, is strongly associated with all-cause mortality. In many analyses, it is similarly meaningful or even more meaningful than classic risk factors such as high blood pressure, smoking, elevated cholesterol, or type 2 diabetes. Important: these are strong associations from observational data, not a deterministic prediction for one individual person.

A study in the New England Journal of Medicine examined more than 6,200 men who underwent exercise testing. Physical performance was a very strong predictor of mortality risk: men with low fitness had a significantly higher risk than men with high fitness (Myers et al., NEJM 2002).

Another large cohort study with more than 122,000 participants in JAMA Network Open also showed an inverse relationship between cardiorespiratory fitness and all-cause mortality. People in very high fitness categories had the lowest mortality risk; this analysis did not identify a clear upper threshold at which the benefit disappeared (Mandsager et al., JAMA Network Open 2018).

Larger reviews and scientific statements come to similar conclusions: even improvements in cardiorespiratory fitness of 1 MET, roughly equivalent to 3.5 ml/kg/min VO₂max, are associated with a relevant reduction in all-cause mortality and cardiovascular events. The exact effect depends on population, baseline fitness, age, sex, existing disease, and study design.

The connection is biologically plausible. Cardiovascular disease remains one of the leading causes of death worldwide. A high VO₂max is a functional expression of a capable cardiovascular and respiratory system. It shows more than the absence of obvious limitation; it also reflects how much reserve your body has under stress.

In longevity medicine, the focus is not just on years of life, but on healthy, capable years. VO₂max is closely linked to daily function: climbing stairs, carrying groceries, walking longer distances, or playing with children without becoming breathless quickly. That is why this value deserves a place in a serious prevention program.

How Is VO₂max Measured? Spiroergometry Compared

VO₂max cannot be determined through a blood draw. Your body has to be stressed under controlled conditions while oxygen uptake and carbon dioxide output are measured.

Gold Standard: Ergospirometry

The most accurate method is ergospirometry, also called spiroergometry or cardiopulmonary exercise testing (CPET). At YEARS, this laboratory-based test takes place on a bike ergometer.

Preparation

You are connected to a 12-lead ECG that continuously monitors your cardiac activity. A blood pressure cuff measures your blood pressure at regular intervals. You wear a tightly fitting mask that captures your breathing.

Stepwise Test Protocol

You start pedaling at a very light workload. The resistance is then increased in regular stages.

Respiratory Gas Analysis

Throughout the test, a device analyzes your inhaled and exhaled air and measures how much oxygen (O₂) your body takes up and how much carbon dioxide (CO₂) it releases.

Maximal Exertion

The test continues until you reach your individual exertion limit or until there is a medical reason to stop. VO₂max or VO₂peak is the highest measured oxygen consumption during the test. Whether a true VO₂max or rather a VO₂peak was reached depends on exertion level, test protocol, and physiological criteria.

This clinical setup supports both accuracy and safety. The ECG can reveal abnormalities during exertion, such as rhythm disturbances or signs of reduced blood flow, which must be interpreted medically.

Estimation Methods: Smartwatches and Field Tests

Apple Watch, Garmin, and other wearables also provide VO₂max values. These are estimates, not direct measurements. The devices use heart rate, speed, age, sex, body weight, movement data, and proprietary algorithms.

Studies show that such estimates can differ meaningfully from laboratory-measured values depending on device, algorithm, training status, activity type, and population. For general training trend tracking, these values can be useful. For a medical baseline, precise training guidance, or risk assessment, they are not sufficient.

Classic field tests such as the Cooper test, where you run for twelve minutes, also estimate VO₂max based on distance covered. These tests can be practical, but they do not provide respiratory gas analysis, ECG monitoring, or direct information about the underlying heart, lung, and metabolic function.

Important note: At YEARS, ergospirometry is the test used to determine VO₂max or VO₂peak. This should be distinguished from body plethysmography, which is also included in the Core® Program. Body plethysmography is a lung function test in a cabin and measures static lung volumes and airway resistance, among other parameters. Together, both tests provide a more complete picture of cardiorespiratory health.

VO₂max Norm Values by Age and Sex

To classify your personal value, you need reference values. VO₂max values differ significantly by age, sex, training status, body composition, and test protocol. The following classification is based on established classifications and reference data from sports medicine guidelines and CPET databases.

The average value in Western populations is not automatically a health target. From a prevention perspective, it may be useful to move long term toward the “good” or “very good” range for your age group. A single VO₂max value alone is only part of the picture and should be interpreted medically in the context of blood pressure, blood markers, symptoms, training, body composition, and existing conditions.

What a Low VO₂max Means and When You Should Act

A VO₂max in the “poor” or “below average” range for your age group is not just a conditioning issue. It can be a relevant sign of reduced cardiorespiratory fitness and lower functional reserves. A low VO₂max is statistically associated with increased risk for the following diseases and outcomes:

Cardiovascular disease, such as heart attack and stroke

High blood pressure

Type 2 diabetes and metabolic dysfunction

Certain cancers

Higher all-cause mortality

A low VO₂max can be related to insulin resistance, low-grade inflammation, inactivity, excess body weight, pulmonary limitations, cardiac factors, or muscular deconditioning. If you become breathless quickly when climbing stairs, fatigue easily in daily life, or have a persistently high resting heart rate, an objective assessment can be helpful.

A low result is not a reason to panic. It is a reason for structured assessment: is the cause mainly low training status, or are there signs of cardiac, pulmonary, hematological, or metabolic limitation? A professionally performed VO₂max test with ECG monitoring can help classify this more accurately.

Disclaimer: This article does not replace individual medical advice. A low VO₂max value alone is not a diagnosis.

How to Improve Your VO₂max: Evidence-Based Training Strategies

VO₂max is one of the more trainable health markers. How much it improves depends on baseline fitness, age, genetics, training history, health status, sleep, nutrition, and consistency.

Foundation: Moderate Endurance Training

A large share of endurance training should take place at moderate intensity, often called Zone 2 training. This means an intensity at which you can still hold a conversation and continue for a longer period. This type of training supports aerobic capacity, fat metabolism, mitochondrial adaptations, and metabolic flexibility.

Three to four sessions per week of 30 to 60 minutes can be a useful foundation for many people. The exact amount should match your current fitness level, training history, and health status.

Peak Stimulus: High-Intensity Interval Training (HIIT)

To increase VO₂max specifically, high-intensity intervals can be very effective. A frequently studied model is the 4x4 protocol: after warming up, four intervals of four minutes each are performed at high intensity, followed by active recovery phases.

The original 4x4 protocol has been studied, among others, by Norwegian research groups around Wisløff and Hoff. It can improve VO₂max and cardiorespiratory fitness. Important: high-intensity training is not immediately suitable for everyone. People with cardiovascular disease, symptoms, very low fitness, or a longer training break should first clarify medically which intensity is safe and appropriate.

The Model: Polarized Training

The combination of a lot of easy training and a few intense sessions is often described as polarized training. In simple terms: most training at low to moderate intensity, a smaller share at high intensity. This model can be effective for many endurance athletes, but it is not a rigid rule for every person.

With consistent training three to five times per week, measurable improvements may be possible after 8 to 12 weeks. The degree of improvement varies individually. Sufficient sleep, nutrient-dense nutrition, appropriate iron status, and stress management support adaptation.

Measuring VO₂max in Berlin: How the Test Works at YEARS

At YEARS, VO₂max measurement is not an isolated performance test. It is part of comprehensive preventive diagnostics because cardiorespiratory fitness is a central pillar of long-term health.

Professional ergospirometry is included as standard in the YEARS Core® Program.

The Process

Your VO₂max test takes place as part of your 6-hour diagnostic day at the clinic in Berlin-Charlottenburg, embedded in further examinations of your cardiovascular health:

Comprehensive laboratory panel: 87+ biomarkers, including cardiovascularly relevant markers such as ApoB, Lp(a), and hs-CRP.

Cardiac diagnostics: 12-lead ECG at rest and under exertion, measurement of arterial stiffness, ankle-brachial index (ABI) to assess possible circulatory impairment.

Imaging: Extended ultrasound of the heart, abdominal organs, thyroid, and blood vessels to assess structure and function.

Functional tests: Heart rate variability (HRV) to classify autonomic regulation, muscle strength, and balance.

The Evaluation

Your VO₂max value becomes part of your personal YEARS Health Report of more than 60 pages. About two weeks after your visit, you discuss this result in a detailed strategy consultation with a physician from the team: where you stand, which risk patterns are visible, and which training or lifestyle changes can be prioritized for you.

People from around age 35 who want to objectively assess their cardiorespiratory fitness may benefit especially, as may executives who want a data-based approach to health management.

The YEARS Core® Program starts at €1,900. Billing is based on the German medical fee schedule (GOÄ). Reimbursement through private health insurance, Beihilfe, or occupational health insurance may be possible depending on tariff, medical indication, and individual case review. Full or partial reimbursement cannot be guaranteed.

Frequently Asked Questions About VO₂max Testing in Berlin

How Long Does a VO₂max Test Take and What Happens During It?

A standalone VO₂max test on a bike ergometer usually takes about 20 to 30 minutes. This includes preparation with ECG and mask, a short warm-up, and the actual stepwise test, which can take about 8 to 15 minutes until maximal exertion depending on fitness level, followed by a short recovery phase. At YEARS, the test is part of the 6-hour Core® Program.

What Does a Professional VO₂max Test Cost in Berlin?

A standalone spiroergometry test as a self-pay service in Berlin often costs in the low three-digit range, depending on provider and scope. At YEARS, VO₂max measurement is included in the Core® Program for €1,900. The program also includes 87+ biomarkers, cardiovascular diagnostics, further functional tests, and a medical strategy consultation.

Is My Smartwatch VO₂max Value Reliable?

It can be helpful for training trends. For clinical purposes, however, it is not sufficient. Smartwatch values are estimates based on algorithms and can differ meaningfully from laboratory-measured values depending on device, person, and training situation. As a medical baseline for health decisions, laboratory-based spiroergometry with respiratory gas analysis is the more reliable method.

How Often Should I Measure My VO₂max?

For a healthy person actively managing fitness, an annual or biennial rhythm can be useful. This allows the effects of training and lifestyle changes to be assessed objectively. Comparing values over several years provides better information than a single measurement.

Ready to put your most important fitness and longevity marker on a solid scientific basis?

Book a consultation at YEARS or learn more about the YEARS Core® Program.

Sources

Kokkinos, P., et al. (2022). Cardiorespiratory Fitness and Mortality Risk Across the Spectra of Age, Race, and Sex. Journal of the American College of Cardiology, 80(6), 598–609. DOI: 10.1016/j.jacc.2022.05.031

Mandsager, K., et al. (2018). Association of Cardiorespiratory Fitness With Long-term Mortality Among Adults Undergoing Exercise Treadmill Testing. JAMA Network Open, 1(6), e183605. DOI: 10.1001/jamanetworkopen.2018.3605

Myers, J., et al. (2002). Exercise Capacity and Mortality among Men Referred for Exercise Testing. New England Journal of Medicine, 346(11), 793–801. DOI: 10.1056/NEJMoa011858

Ross, R., et al. (2016). Importance of Assessing Cardiorespiratory Fitness in Clinical Practice: A Case for Fitness as a Clinical Vital Sign. Circulation, 134(24), e653–e699. DOI: 10.1161/CIR.0000000000000461

Wisløff, U., et al. (2007). Superior Cardiovascular Effect of Aerobic Interval Training Versus Moderate Continuous Training in Heart Failure Patients: A Randomized Study. Circulation, 115(24), 3086–3094. DOI: 10.1161/CIRCULATIONAHA.106.675041

American College of Sports Medicine. ACSM's Guidelines for Exercise Testing and Prescription. Wolters Kluwer.

Kaminsky, L. A., et al. (2015). Reference Standards for Cardiorespiratory Fitness Measured With Cardiopulmonary Exercise Testing. Mayo Clinic Proceedings, 90(11), 1515–1523.

Passler, S., et al. (2019). Validity of Wrist-Worn Activity Trackers for Estimating VO₂max and Energy Expenditure. International Journal of Environmental Research and Public Health, 16(17), 3037.

Lambe, R., et al. (2025). Investigating the Accuracy of Apple Watch VO₂max Measurements: A Validation Study. PLOS ONE.