What Does Your VO2max Actually Tell You?

When athletes hear the term VO₂max, one of the first questions they ask is:

“What does this number really mean for me?”

VO₂max is often described as the size of your “aerobic engine”, providing a useful way to understand your overall aerobic capacity and cardiorespiratory fitness. It also offers a valuable baseline for understanding how your body responds to increasingly demanding exercise.

When the full test is interpreted properly, it can help guide your training intensity, identify important physiological thresholds and track whether your aerobic fitness is improving over time.

What Is VO₂max?

VO₂max is the maximum rate at which your body can consume oxygen during sustained exercise, expressed as millilitres of oxygen per kilogram of body weight per minute (ml/kg/min).

The result reflects the combined ability of your:

• Lungs to take in oxygen
• Heart and circulatory system to transport it
• Blood to carry it
• Working muscles to use it to produce energy

A higher VO₂max generally reflects a greater capacity for aerobic exercise. Importantly, cardiorespiratory fitness isn't only relevant to athletic performance. Higher levels have also been associated with greater longevity and a lower risk of cardiovascular disease and other chronic conditions.

How Is VO₂max Measured?

Typically, during a laboratory VO₂max test:

• You wear a mask connected to a metabolic analyser.
• You exercise on a treadmill or ergometer while exercise intensity gradually increases in short stages.
• Oxygen intake and carbon dioxide output are measured breath‑by‑breath.
• Your physiological response is monitored as you work towards maximal effort.
• VO₂max is reached when oxygen consumption plateaus despite rising effort.

This provides objective data on how your body responds as exercise intensity increases.

Unlike the VO₂max estimate you may receive from a smartwatch, laboratory testing directly measures your respiratory gases during exercise rather than predicting the result from variables such as heart rate and pace.

At FORGED by RF, VO₂max testing is conducted using the CORTEX 21 Performance T portable cardiopulmonary testing system which is the first of its kind in Southeast Asia.

What VO₂max Doesn’t Tell You…

While VO₂max provides an important measure of your aerobic capacity, it doesn’t necessarily predict exactly how you’ll perform in a race or how long you can sustain a particular pace.

Here’s why two athletes can have the same VO₂max but still produce very different results:

Your Physiological Thresholds

Your ventilatory thresholds (VT1 and VT2) indicate how much of your aerobic capacity you can sustain as intensity increases. An athlete with a lower VO₂max but higher VT2 may still maintain a strong pace for longer. Combining VO₂max with a Lactate Threshold Test provides a more complete picture of sustainable performance.

Your Movement Economy

Movement economy describes how much oxygen you need to maintain a given pace. A more economical runner can sustain the same speed with less physiological strain. A 3D Gait Analysis can provide further insight into how you move.

Your Muscular Strength and Endurance

Especially in HYROX, cycling and rowing, muscular strength and endurance help you maintain force and movement quality as fatigue builds, which is why aerobic conditioning should be complemented by appropriate strength training.

Technique and Pacing

Race strategy, movement skill, nutrition, environmental conditions and effort management all influence performance. VO₂max is an important piece of the puzzle, not the entire picture.

What The Results Mean

Results aren’t just numbers, they’re actionable benchmarks:

Your VO₂max reveals your aerobic ceiling, showing how effectively your body can deliver and use oxygen during exercise. A higher VO₂max generally indicates greater aerobic capacity and cardiorespiratory fitness, although your result should always be interpreted in the context of factors such as your age, sex, training background and goals.

The test can also provide insight into your fuel utilisation, showing how your body’s use of carbohydrates and fats changes across different exercise intensities. Together with your ventilatory thresholds and heart-rate response, this can help provide more individualised guidance around training intensity, endurance and fuelling strategies.

Rather than simply asking, “Is my VO₂max good?”, it may be more useful to ask: “What does my result mean for my goals, and is it improving?”

Here is a general guideline for a “Good” VO₂max depending on your age and sex.

Who Can Benefit From A VO₂max Test

Endurance Athletes

• For runners, triathletes and cyclists, VO₂max testing can establish an aerobic baseline and provide more individualised information to guide endurance training.
• Testing can also be matched to your sport using a treadmill or cycle ergometer, as VO₂max results may differ between exercise modes.
• More experienced endurance athletes may benefit from combining VO₂max with a Lactate Threshold Test or movement analysis for a more complete picture of sustainable performance.

HYROX Athletes

• HYROX requires aerobic fitness alongside running economy, strength endurance and efficient station work.
• With more than 60% of total race time spent running, improving aerobic fitness is extremely critical to bettering overall performance.
• For more race-specific insights, FORGED by RF also offers a Singapore’s first HYROX VO₂ Assessment designed around the combined demands of running and functional stations.

Recreational Athletes:

• You don’t need to be an elite competitor to benefit from understanding your aerobic fitness.
• Testing can help you establish a baseline, replace generic heart-rate estimates with more individualised information and track whether your training is producing meaningful changes.

Conclusion

Your VO₂max tells you the maximum rate at which your body can use oxygen during intense exercise. It provides a valuable measure of your aerobic capacity, an objective baseline for tracking progress and useful context for your cardiorespiratory fitness.

If you’re working towards a more specific performance or health goal, FORGED by RF also offers testing bundles that combine VO₂max with complementary assessments for a broader view of your performance:

1. FORGED | Ultimate Runner’s Bundle
   1. VO₂max Test
   2. Lactate Threshold Test
   3. Run-Specific Strength and Power Profiling
   4. 3D Gait Analysis + Shoe Recommendation
2. PWR | Biker’s Metabolic Bundle
   1. VO₂max Test
   2. Lactate Threshold Test
3. Signature Health Bundle
   1. Visbody 3D Scan
   2. Resting Metabolic Rate Test
   3. VO₂max Test
   4. Functional Strength and Power Profiling

If you have any questions, reach out to us via WhatsApp, and our friendly team will get back to you as soon as possible.