Evaluation of the Interchangeability of and Oxygen Uptake Efficiency Slope

2002 ◽  
Vol 27 (6) ◽  
pp. 589-601 ◽  
Author(s):  
Aurélien Pichon ◽  
Sophie Jonville ◽  
André Denjean
Keyword(s):  
Clinical Practice ◽  
Oxygen Uptake ◽  
Minute Ventilation ◽  
Limits Of Agreement ◽  
Uptake Efficiency ◽  
Interindividual Variations ◽  
Cardiorespiratory Function ◽  
The Difference ◽  
Two Parameters ◽  
Oxygen Uptake Efficiency Slope

A reliable submaximal test for assessing cardiorespiratory function would be of interest in clinical practice. Baba et al. (1996) proposed the oxygen uptake efficiency slope (OUES) derived from the relation between oxygen uptake ([Formula: see text] and minute ventilation [Formula: see text] during incremental exercise. We evaluated the validity of OUES by comparing maximal oxygen uptake [Formula: see text] predicted from OUES to measured [Formula: see text] in 50 healthy males who performed a maximal treadmill test. They had widely differing physical fitness levels ([Formula: see text]range, 32.7 to 80.2 mlO2 ∙ min−1 ∙ kg−1). Predicted [Formula: see text] was not significantly different (p > 0.99) from measured [Formula: see text] (56.8 ± 7.0 vs. 56.8 ± 8.8 mlO2 ∙ min−1 ∙ kg−1). The limits of agreement (Bland & Altman, 1986) were plus or minus 10.5 mlO2 ∙ min−1 ∙ kg−1. Although OUES and [Formula: see text]were significantly correlated (r = 0.79), the wide interindividual variations in the difference between these two parameters may limit the usefulness of OUES in clinical practice. Key Words: exercise, testing, OUES, fitness, agreement

The Minute Ventilation/Carbon Dioxide Production Slope is Prognostically Superior to the Oxygen Uptake Efficiency Slope

2007 ◽  
Vol 13 (6) ◽  
pp. 462-469 ◽  
Author(s):  
Ross Arena ◽  
Jonathan Myers ◽  
Leon Hsu ◽  
Mary Ann Peberdy ◽  
Sherry Pinkstaff ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Oxygen Uptake ◽  
Minute Ventilation ◽  
Carbon Dioxide Production ◽  
Uptake Efficiency ◽  
Oxygen Uptake Efficiency Slope

Intratest reliability and test–retest reproducibility of the oxygen uptake efficiency slope in healthy participants

2009 ◽  
Vol 16 (4) ◽  
pp. 493-498 ◽  
Author(s):  
Christophe Van Laethem ◽  
Johan De Sutter ◽  
Wim Peersman ◽  
Patrick Calders
Keyword(s):  
Carbon Dioxide ◽  
Oxygen Uptake ◽  
Minute Ventilation ◽  
Exercise Duration ◽  
Peak Oxygen Uptake ◽  
Exercise Tests ◽  
Uptake Efficiency ◽  
Carbon Dioxide Output ◽  
Oxygen Uptake Efficiency Slope ◽  
Healthy Participants

Background The oxygen uptake efficiency slope (OUES) is a newer ventilatory exercise parameter, used in the evaluation of healthy participants and patients with cardiovascular disease. However, few data about the reliability and reproducibility of OUES are available. Our study assessed intratest reliability and test-retest reproducibility of OUES in healthy participants. Design and methods Eighteen participants (age 28 ± 6 years, BMI 22.1 ± 1.9 kg/m2, 10 men) performed two identical maximal exercise tests on a bicycle ergometer. To assess test-retest reproducibility, we performed Bland-Altman analysis and calculated the coefficient of repeatability of the main ventilatory variables. Results OUES remained stable during the second part of the exercise test. Mean values varied 2.4 ± 4.0% between OUES calculated at 70% (OUES70) and at 100% of exercise duration. Mean variation decreased to 1.4 ± 2.3% when OUES was calculated at 90% of exercise duration (OUES90). The Bland-Altman 95% limits of agreement for OUES90 were +3 and –6%, those for OUES70 were +11 and –8%. The coefficient of repeatability for OUES was 597 ml/min or 18.7% of the average value of repeated OUES measurements. These results were similar to those of peak oxygen uptake and minute ventilation/carbon dioxide output. However, the test-retest reproducibility for submaximal-derived values of OUES was lower, as we noted higher coefficients of repeatability for OUES90 and OUES70, increasing up to 27% of the average of repeated values. Conclusion OUES shows excellent intratest reliability and has a test-retest reproducibility that is similar to that of peak oxygen uptake and minute ventilation/carbon dioxide output slope. However, its reproducibility becomes higher when it is calculated from increasing levels of achieved exercise intensity.

Oxygen Uptake Efficiency Slope in Healthy Children

2010 ◽  
Vol 22 (3) ◽  
pp. 431-441 ◽  
Author(s):  
Moniek Akkerman ◽  
Marco van Brussel ◽  
Bart C. Bongers ◽  
Erik H.J. Hulzebos ◽  
Paul J.M Helders ◽  
...  
Keyword(s):  
Oxygen Uptake ◽  
Ventilatory Threshold ◽  
Pediatric Population ◽  
Fat Free Mass ◽  
Healthy Children ◽  
Bicycle Ergometry ◽  
Exercise Tests ◽  
Uptake Efficiency ◽  
Cardiorespiratory Function ◽  
Oxygen Uptake Efficiency Slope

The objective of this study was to investigate the characteristics of the submaximal Oxygen Uptake Efficiency Slope (OUES) in a healthy pediatric population. Bicycle ergometry exercise tests with gas-analyses were performed in 46 healthy children aged 7–17 years. Maximal OUES, submaximal OUES, V̇O2peak, VEpeak, and ventilatory threshold (VT) were determined. The submaximal OUES correlated highly with V̇O2peak, VEpeak, and VT. Strong correlations were found with basic anthropometric variables. The submaximal OUES could provide an objective, independent measure of cardiorespiratory function in children, reflecting efficiency of ventilation. We recommend expressing OUES values relative to Body Surface Area (BSA) or Fat Free Mass (FFM).

Using the Oxygen Uptake Efficiency Slope as an Indicator of Cardiorespiratory Fitness in the Obese Pediatric Population

2012 ◽  
Vol 24 (3) ◽  
pp. 357-368 ◽  
Author(s):  
Peter G. Breithaupt ◽  
Rachel C. Colley ◽  
Kristi B. Adamo
Keyword(s):  
Oxygen Uptake ◽  
Body Mass ◽  
Ventilatory Threshold ◽  
Pediatric Population ◽  
Fat Free Mass ◽  
Healthy Weight ◽  
Obese Children ◽  
Uptake Efficiency ◽  
Cardiorespiratory Function ◽  
Oxygen Uptake Efficiency Slope

The aim of the current study was to investigate the relationship between the Oxygen Uptake Efficiency Slope (OUES) and traditional measures of cardiorespiratory function in an overweight/obese pediatric sample. Maximal treadmill exercise testing with indirect calorimetry was completed on 56 obese children aged 7–18 years. Maximal OUES, submaximal OUES, VO2peak, VEpeak, and ventilatory threshold (VT) were determined. In line with comparable research in healthy-weight samples, maximal and submaximal OUES were both correlated with VO2peak, VEpeak, and VT (r2= 0.44−0.91) in the obese pediatric sample. Correlations were also found with anthropometric variables, including height (cm), body surface area (m2), body mass (kg), and fat free mass (kg). In comparing our data to a published sample of healthy weight children, maximal and submaximal exercise OUES were both higher in our obese sample. However, when we adjusted for any of body mass (kg), BSA (m2), or FFM (kg) the obese children were found to be less efficient. The results of this study suggest the use of OUES to be an appropriate measure of efficiency of ventilation and cardiorespiratory function in obese children, while also showing that our sample of obese children were less efficient on a per kilogram basis when compared with their healthy weight peers.

scholarly journals The Influence of Maturation on the Oxygen Uptake Efficiency Slope

2012 ◽  
Vol 24 (3) ◽  
pp. 347-356 ◽  
Author(s):  
Michael P. Rogowski ◽  
Justin P. Guilkey ◽  
Brooke R. Stephens ◽  
Andrew S. Cole ◽  
Anthony D. Mahon
Keyword(s):  
Oxygen Uptake ◽  
Body Mass ◽  
Cycle Ergometer ◽  
Group Differences ◽  
Healthy Male ◽  
Uptake Efficiency ◽  
Graded Exercise ◽  
Oxygen Uptake Efficiency Slope ◽  
Male Subjects ◽  
One Way Anova

This study examined the influence of maturation on the oxygen uptake efficiency slope (OUES) in healthy male subjects. Seventy-six healthy male subjects (8–27 yr) were divided into groups based on maturation status: prepubertal (PP), midpubertal (MP), late-pubertal (LP), and young-adult (YA) males. Puberty status was determined by physical examination. Subjects performed a graded exercise test on a cycle ergometer to determine OUES. Group differences were assessed using a one-way ANOVA. OUES values (VO2L·min1/log10VEL·min−1) were lower in PP and MP compared with LP and YA (p < .05). When OUES was expressed relative to body mass (VO2mL·kg−1·min−1/log10VEmL·kg−1·min−1) differences between groups reversed whereby PP and MP had higher mass relative OUES values compared with LP and YA (p < .05). Adjusting OUES by measures of body mass failed to eliminate differences across maturational groups. This suggests that qualitative factors, perhaps related to oxidative metabolism, account for the responses observed in this study.

Sign in / Sign up

Export Citation Format

Share Document