When you’re serious about running performance, understanding your endurance matters. Knowing your physical and mental effort is crucial for optimizing your health and performance, and even for injury prevention.
However, while some people still rely on manual methods like how they feel or heart rate formulas, there’s a more exact method that undoubtedly beats guessing. Learn more about VO2 testing and its value below.
What is VO2 Testing?
VO2 testing is a process that measures your body’s ability to consume and use oxygen during exercise, known as VO2 max. Many people perform VO2 max testing in Brisbane and in other locations on a treadmill or a bike. During the session, they wear a specialized mask that analyzes oxygen intake and carbon dioxide output.
The VO2 ‘max’ number from this test doesn’t just show the maximum amount of oxygen your body can absorb. It also shows your ventilatory threshold 1 (VT1) and your ventilatory threshold 2 (VT2).
VT1 describes your aerobic threshold, which marks the transition from fat-burning metabolism to reliance on carbohydrates, while VT2 is the intensity marker where breathing is rapid and labored. This is when you transition from sustainable to unsustainable exercise. During VO2 testing, you also receive information on your heart rate and pace or power zones.
What’s Wrong with Guessing Training Zones?
Training zones are all about measuring the intensity at which your body uses its aerobic metabolism to produce energy. At different levels of exertion, your body responds and performs differently.
For example, in Zone 1, which is considered very light, you can maintain this intensity for extended periods and even hold conversations during exercise. At Zone 5, you’re at your limits, and this form of exercise is only sustainable in the short-term.
To understand which zones runners are in, they typically track their training with wearable-generated estimates, the 220-age formula, and perceived effort. While such methods may give you a rough idea, they aren’t accurate as everyone responds differently to exercise.
Two people of the same age can have very different thresholds. For example, one 45-year-old might hit their threshold at 140 bpm, while another is at 160 bpm. Relying on these methods or generic formulas in general can cause you to:
- Train too hard on your easy days
- Not train hard enough on your interval days
- Plateau, despite being consistent
- Increase your risk of overtraining
Why VO2 Testing is More Effective
As scary as it can be to try a new testing method, VO2 testing is a highly accurate way to determine just how much oxygen your cardiovascular system can uptake, transport, and use during strenuous exercise. It’s more effective than guessing methods for these reasons:
- Personalized accuracy, with a lab test measuring your unique physiology, not population averages
- True aerobic base development, understanding your exact heart rate for Zone 2 and your corresponding pace or power
- Smarter interval work, with VO2 testing identifying your VO2 max zone, lactate threshold zone, and tempo range
- Progress tracking, with repeat testing 2-4 times a year showing your VO2 max changes, threshold shifts, and cardiac efficiency improvements
Guessing your training zones with apps, wearables, and formulas may seem more than adequate for your needs, but you’re missing out on learning crucial data. VO2 max testing may help you reach your full performance potential and reduce the risk of over- or under-training.