Key result
Submaximal oxygen uptake efficiency slope (OUES) truncated to an RER of 1.0 was highly correlated with full test OUES (r = 0.9), demonstrating that OUES increases with exercise intensity.
Why the study?
Can respiratory exchange ratio (RER) be used as a secondary criterion for reporting oxygen uptake efficiency slope (OUES) from submaximal exercise tests?
Population
100 healthy volunteers (53 women)
Comparison
Calculation of Oxygen Uptake Efficiency Slope… vs OUES values generated from full test data
Design
Cross-sectional
Authors
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RER ≥1.0 may standardize submaximal OUES reporting in healthy adults; leaves open validation in patients and optimal cutoffs.
Observational (n=100)
Can respiratory exchange ratio (RER) be used as a secondary criterion for reporting oxygen uptake efficiency slope (OUES) from submaximal exercise tests?
Effect estimate: r = 0.9
Sub-maximal OUES values are not independent of exercise intensity, and an RER of 1.0 can be used as a secondary criterion to define the transition from low to moderate intensity.
Williamson et al. (2012) conducted an observational in healthy volunteers (n=100). Submaximal exercise testing (data truncated to specific RER levels) vs. Full exhaustive exercise test data was evaluated on Correlation between OUES from full test data and data truncated to RER 1.0 (r = 0.9). Submaximal oxygen uptake efficiency slope (OUES) truncated to an RER of 1.0 was highly correlated with full test OUES (r = 0.9), demonstrating that OUES increases with exercise intensity.
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