80/20 ENDURANCE BLOG

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How Your VO2max Affects Your Intensity Zones

By Matt Fitzgerald | October 19, 2022

The concept of a limiting rate of oxygen consumption during exercise, or VO2max, has existed since 1923. For almost a…

FTP test measurement

What Gets Measured Gets Overemphasized

By Matt Fitzgerald | September 14, 2020

Recently I created a custom training plan for an Italian ultraendurance cyclist who was preparing for a pair of multiday,…

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