The Reliability and Validity of a Four-Minute Running Time-Trial in Assessing V ˙ O 2 max and Performance

摘要

Introduction: Traditional graded-exercise tests to volitional exhaustion (GXTs) are limited by the need to establish starting workloads, stage durations, and step increments. Short-duration time-trials (TTs) may be easier to implement and more ecologically valid in terms of real-world athletic events. The purpose of the current study was to assess the reliability and validity of maximal oxygen uptake ( V ˙ O 2 max) and performance measured during a traditional GXT (STEP) and a four-minute running time-trial (RunTT).