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Runner's performance evaluation - Part 1: the VO2max.

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This is the first part of a journey into the evaluation of the runner's performance, made possible with the big support of Mark Henninger (himaxx Centre for Altitude Training - Berlin, Germany), that provided the ergospirometer, the treadmill, the hypoxic chamber and his knowledge for the tests. Thanks Mark!
The MET (Metabolic Equivalent of Task) is a physiological measure that expresses the energy cost of physical activities. It is defined as the ratio of metabolic rate during a specific physical activity to a reference metabolic rate (set by convention to 3.5 ml  O2/kg/min):


The reference metabolic rate just mentioned, is the expression of an individual’s body capacity to transport and use oxygen during exercise and it is called VO2 (milliliters of oxygen per kilogram of bodyweight per minute [ml/kg/min]). The maximum reachable value of VO2 describes the maximum capacity to transport and use oxygen during an incremental exercise and it is called VO2max. Various methods are availa…