Weight loss can lead to an increase in relative VO2max, as fat mass is inversely proportional to relative VO2max.
It is important to measure body composition, not just raw weight, to accurately measure VO2max.
Therefore, weight loss can lead to an increase in VO2max calculation.
The researchers do further analysis to show that relative VO2max is actually inversely proportional to fat mass -- that is, the more body fat you have, the lower your relative VO2max. In fact, fat mass is a better predictor of relative VO2max than exercise performance (how far/fast you go in the VO2max test)!
Is VO2max Proportional to Weight? | Runner's World
This article discusses the relationship between VO2 Max and body weight, and how it is important to understand the differences between the two. It explains that a high body weight is generally related to a higher fat mass, which is closely linked to lack of fitness and a bad diet, and that the BMI formula is not accurate when negative. It also explains that it is important to measure body composition not just raw weight, and that it is important to differentiate raw weight from lean body mass in order to accurately measure VO2 Max.
Understanding VO2 Max vs Body Weight | by Alex Fastfitness ...
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