When searching for a longer and healthier life, we often put our entire focus on nutrition and overall strength. Although they are critical, scientists have identified one specific metric that has been standing above all others when predicting our lifespan: VO2 Max.

VO2 max measures the maximum amount of oxygen your body can utilize during intense exercise. This has been a fundamental indicator of metabolic health and cardiorespiratory capabilities.

The Gold Standard of Longevity Predictors

According to research made by the American Heart Association (AHA), low fitness levels are often associated with a higher risk of cardiovascular diseases and mortality than smoking or high blood pressure, for example. In the end, their publication concludes that cardiorespiratory fitness should be considered a clinical vital sign for longevity.

In his research-driven book, called 'Outlive', Dr. Peter Attias emphasizes that your VO2 max represents the rhetorical ceiling to your physical capabilities. The higher that ceiling, the more "functional reserve" you have to navigate the inevitable physical decline that comes with aging.

The Two-Pillar Approach to Training

To effectively raise your VO2 max and improve heart health, science suggests a balanced "polarized" approach. This involves two distinct types of cardiovascular training:

1. Zone 2: The Aerobic Foundation

Zone 2 training involves steady-state exercise at an intensity where you can still maintain a conversation but feel the effort. This intensity is high enough to stimulate mitochondrial health and fat oxidation without causing excessive fatigue.

Why it matters: It builds the "base" of your cardiovascular system, making your heart more efficient at pumping blood and your muscles better at using oxygen.

Frequency: Dr. Attia recommends that roughly 80% of your cardio training time should be spent in this zone.

2. Maximum Aerobic Output: Peak Training

To actually increase the size of VO2 max, you should occasionally push toward your maximum capacity, which means involving in high-intensity training that forces your heart and lungs to adapt to extreme situations and demands.

A common protocol is the 4x4: 4 minutes of high intensity effort followed by four minutes of active recovery, repeated 4 times. You should always engage in those exercises at least once a week, representing, generally, 20% of your training volume.

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Don't introduce Everything, All at Once

Don't force yourself to do high-intensity training during the first time. If you have not been active for a while, you should start by going on walks or with some light cycling, before you start engaging with more serious high-intensity activities.

Also, remember that you should see your increase of VO2 max as a long-term project. Your heart adapts quickly, indeed, but if you do not stay consistent with your cardiorespiratory stimulus, those gains are lost in an instant

With these protocols in mind, you are creating a consistent strategy to remain active and capable throughout the years. So, remember, if you want to be able to play with your grandchildren in the future, make sure that you have been taking care of your VO2 max, so you don't get windy.

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Sources

Outlive: The Science and Art of Longevity. (2023). Attia, P.

Importance of Assessing Cardiorespiratory Fitness in Clinical Practice: A Case for Fitness as a Clinical Vital Sign. (n.d.). American Heart Association.

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