VO₂ max measures your body’s maximum ability to utilize oxygen during exercise. It’s widely recognized as the gold standard marker of aerobic capacity, endurance performance, and long-term cardiovascular health.
VO₂ max testing provides objective, personalized data that guides precise training to reach your performance and fitness goals.

Precision Metabolic Testing for Performance, Health, and Longevity

VO₂ max measures your body’s maximum ability to utilize oxygen during exercise. It’s widely recognized as the gold standard marker of aerobic capacity, endurance performance, and long-term cardiovascular health.
VO₂ max testing provides objective, personalized data that guides precise training to reach your performance and fitness goals.


We use the VO2 Master wireless metabolic technology that delivers lab-grade accuracy without bulky hoses, stationary carts, or lab-style setups. We are one of only three providers in the San Diego area using the VO2 Master for wireless VO2 max testing.
No tubes or wires restricting movement
Lightweight mask for natural breathing
Breath-by-breath data collection
Lab-level accuracy showing only 1.6–2% variance against gold-standard
Ideal for treadmill, bike, or sport-specific testing
Easily connect data to most Garmin watches
Your RMR is the number of calories your body burns at rest—before exercise, movement, or daily activity. This number is highly individual and often misestimated by generic formulas.
If you’ve ever felt like your nutrition plan should be working, but isn’t, RMR testing often reveals why.


This service is ideal for individuals who want objective data and personalized insights, including:
Why Choose Stretch Affect for VO₂ Max & RMR Testing in San Diego
At Stretch Affect, the foundation to movement health begins with breath. Your body’s ability to deliver and use oxygen underpins mobility, strength, endurance, and long-term health.
This test becomes your endurance & metabolic benchmark so we can craft training and nutrition programs precisely for your goals, whether that’s fat loss, muscle gain, performance, or longevity.
VO2 max and RMR are only part of your health plan, we provide insights that include interpreting your results and creating a personalized plan through the lens of movement health, performance, and recovery.
Retesting is available to track your progress and implement adjustments if necessary.


















One of only three providers offering wireless VO₂ max testing in San Diego
Testing performed and interpreted by a licensed Doctor of Physical Therapy
Integrated recommendations for training, recovery, and injury prevention
Ideal for those who want to measure improvement
Advanced, reliable, accurate testing delivered in a high-performance environment
Your true VO₂ max value
Testing with your chosen activity, not restricted with tubes and wires
Personalized heart-rate and training zones
Resting metabolic rate measurement
Clear explanation of results
Practical recommendations for training and recovery
A baseline for future retesting and progress tracking
If you’re investing time, effort, and money into your health and performance, take your training to the next level with accurate, personalized data complete with evaluation, planning, and follow-up to monitor improvement.
Schedule testing today and experience one of the most advanced VO2 Max and RMR assessments available in San Diego.
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