14/09/2026
Many people ask about the difference between lactate testing and VO₂ max testing, and really is a good question. VO₂ max tells us about capacity, the maximum amount of oxygen an athlete can use. It is interesting, it produces big numbers, and it looks scientific, but it does not tell runners what they truly need to know.
Lactate testing, on the other hand, measures control. It shows how your body responds to pace, fatigue, and intensity. It identifies your training zones, your efficiency, and your ability to sustain race pace. It tells us whether the work you are doing is actually moving you forward, especially when you compare assessment to assessment after a block of training. For runners, that information is far more practical and far more valuable. Something I have always said to athletes is that lactate is not the enemy, misunderstanding what is happening is the real enemy.
Another constant we see in the lab, and it has never changed, is athletes running too hard on easy days and not hard enough on hard days. This is the single biggest limiter of progress. Easy days are meant to build durability, support recovery, and protect the aerobic system. Hard days are where you challenge the body and create adaptation. When those two get blurred, athletes end up tired, frustrated, and stuck in the same cycle. As an athlete you surely are looking towards progression as opposed to stagnation or regression.
The lab simply gives us a way to measure what is really happening and help runners train with clarity instead of guesswork. As a coach, it allows me to see whether the training block has created the adaptation we expected, because you are assessing after the work has been done, not guessing in the dark.
If you have ever wondered whether your pacing is right, or whether your training is actually aligned with your physiology, testing is one of the most reliable ways to find out. The process is about helping runners understand their bodies, train smarter, and enjoy the sport more.