Maximal oxygen consumption and oxygen uptake efficiency in adolescent males.
J Exerc Sci Fit
; 19(2): 75-80, 2021 Apr.
Article
em En
| MEDLINE
| ID: mdl-33335553
ABSTRACT
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 (VÌO2max). We assessed the validity of the OUES and OUEP as predictors of VÌO2max in healthy male adolescents.METHODS:
Sixty-three healthy male adolescents aged 15.40 ± 0.34 years underwent an incremental treadmill test to determine VÌO2max, OUES and OUEP. OUE throughout the test was assessed by dividing each VÌO2 value by the corresponding minute ventilation (VÌE) 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 VÌO2 and the logarithm of VÌE.RESULTS:
Limits of agreement for VÌO2max predicted by OUES (±13.3 mL kg-1.min-1) and OUEP (±16.7 mL kg-1.min-1) relative to VÌO2max were wide and a magnitude bias was found for OUES and OUEP as predictors of VÌO2max (p < 0.001).CONCLUSION:
The OUES and OUEP do not accurately predict VÌO2max in male adolescents and should not replace VÌO2max when assessing CRF in this population.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article