Key result
OUES strongly correlates with measured VO2peak in heart failure but proves no better than VAT.
Why the study?
The relationships of oxygen uptake efficiency slope to other indices of physical fitness and ventilatory efficiency have not been widely investigated in heart failure.
Does the oxygen uptake efficiency slope (OUES) accurately predict VO2peak compared to the ventilatory anaerobic threshold in male patients with stable chronic heart failure?
Comparison
OUES(100), OUE(SRER1), and VAT indices compared to VO2peak and V(E)-VCO2 slope
Design
Observational study with symptom-limited maximal exercise tests
Follow-up
6 months for 19 patients
Authors
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OUES should not replace VAT for VO2peak estimation in HF; leaves open its incremental value in prospective cohorts.
Observational (n=63)
Does the oxygen uptake efficiency slope (OUES) accurately predict VO2peak compared to the ventilatory anaerobic threshold in male patients with stable chronic heart failure?
Effect estimate: r = 0.883
The OUES index up to RER=1 is not superior to the ventilatory anaerobic threshold for predicting VO2peak in patients with chronic heart failure, though it may provide additional physiological insights.
Antoine‐Jonville et al. (2011) conducted an observational in stable chronic heart failure (n=63). Oxygen uptake efficiency slope (OUES) vs. Ventilatory anaerobic threshold (VAT) was evaluated on Correlation with measured VO2peak (r = 0.883). The oxygen uptake efficiency slope (OUES) was significantly correlated with measured VO2peak (r = 0.883) in heart failure patients, but was not better than the ventilatory anaerobic threshold.
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