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Time spent at VO2max: a methodological issue.

G Dupont1, N Blondel, S Berthoin

  • 1Laboratoire d'Etudes de la Motricité Humaine, Faculté des Sciences du Sport et de l'Education Physique, Université de Lille 2, France.

International Journal of Sports Medicine
|June 5, 2003
PubMed
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Determining time spent at VO2max (tVO2max) requires a standardized procedure. The study found that using the VO2max of the day and summing values above 95% VO2max is a robust method for accurately measuring tVO2max.

Area of Science:

  • Exercise Physiology
  • Sports Science
  • Human Performance

Background:

  • Accurate measurement of time spent at VO2max (tVO2max) is crucial for understanding endurance performance.
  • Existing methods for determining tVO2max can be variable and lack standardization.
  • The VO2max value obtained on the day of testing (VO2max of the day) is a key factor in tVO2max calculation.

Purpose of the Study:

  • To propose and evaluate a standardized procedure for determining time spent at VO2max (tVO2max).
  • To compare different methods of calculating tVO2max using the VO2max of the day.
  • To identify the most robust method for tVO2max determination in endurance running.

Main Methods:

  • Ten male subjects underwent two testing protocols involving graded field tests and continuous running to exhaustion.

Related Experiment Videos

  • Tests included the Université de Montréal Track Test (VUMTT) and a VUMTT plus 1 km/h (VUMTT(+1)) protocol.
  • Various methods were employed to calculate tVO2max, comparing results based on the graded test VO2max versus the VO2max of the day.

    • Main Results:

    • The VUMTT(+1) protocols demonstrated sufficient intensity and duration to accurately identify the VO2max of the day.
    • Calculated time spent at VO2max varied significantly, ranging from 25 ± 53 s to 139 ± 76 s depending on the method used.
    • The tVO2max method summing values above 95% of the VO2max of the day proved more robust than other tested methods.

    Conclusions:

    • A standardized procedure for tVO2max determination is proposed, utilizing the VO2max of the day.
    • The method involving the sum of VO2 values exceeding 95% of the day's VO2max is recommended for its robustness.
    • This standardized approach enhances the reliability of tVO2max measurements in exercise physiology research and practice.