Maximal oxygen consumption and oxygen uptake efficiency in adolescent males

Sinead Sheridan, Andrew McCarren, Cleona Gray, Ronan P. Murphy, Michael Harrison, Stephen H.S. Wong, Niall M. Moyna

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Background/objective: Measures of oxygen uptake efficiency (OUE) have been used to evaluate cardiorespiratory fitness (CRF) in adolescents unable to perform maximal exercise. The oxygen uptake efficiency slope (OUES) and oxygen uptake efficiency plateau (OUEP) have been proposed as surrogates for maximal oxygen consumption (V̇O2max). We assessed the validity of the OUES and OUEP as predictors of V̇O2max in healthy male adolescents. Methods: Sixty-three healthy male adolescents aged 15.40 ± 0.34 years underwent an incremental treadmill test to determine V̇O2max, OUES and OUEP. OUE throughout the test was assessed by dividing each V̇O2 value by the corresponding minute ventilation (V̇E) value. OUEP was determined as the 90 s average highest consecutive values for OUE. OUES was determined using data up to the ventilatory threshold (VT) by calculating the slope of the linear relation between V̇O2 and the logarithm of V̇E. Results: Limits of agreement for V̇O2max predicted by OUES (±13.3 mL kg−1.min−1) and OUEP (±16.7 mL kg−1.min−1) relative to V̇O2max were wide and a magnitude bias was found for OUES and OUEP as predictors of V̇O2max (p < 0.001). Conclusion: The OUES and OUEP do not accurately predict V̇O2max in male adolescents and should not replace V̇O2max when assessing CRF in this population.

Original languageEnglish
Pages (from-to)75-80
Number of pages6
JournalJournal of Exercise Science and Fitness
Issue number2
Publication statusPublished - Apr 2021


  • Adolescents
  • Exercise testing
  • Fitness
  • Maximal oxygen consumption
  • Oxygen uptake efficiency plateau
  • Oxygen uptake efficiency slope


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