Running Performance, $${\dot}{\bf O}_{\bf {2max}}$$ V ˙ O 2 max , and Running Economy: The Widespread Issue of Endogenous Selection Bias

Abstract

Studies in sport and exercise medicine routinely use samples of highly trained individuals in order to understand what characterizes elite endurance performance, such as running economy and maximal oxygen uptake ( \({\dot}{\rm O}_{\mathrm {2max}}\) ). However, it is not well understood in the literature that using such samples most certainly leads to biased findings and accordingly potentially erroneous conclusions because of endogenous selection bias. In this paper, I review the current literature on running economy and \({\dot}{\rm O}_{\mathrm {2max}}\) , and discuss the literature in light of endogenous selection bias. I demonstrate that the results in a large part of the literature may be misleading, and provide some practical suggestions as to how future studies may alleviate endogenous selection bias.

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