Oxygen uptake efficiency slope: A new index of cardiorespiratory functional reserve derived from the relation between oxygen uptake and minute ventilation during incremental exercise

Baba, Reizo; Nagashima, Masami; Goto, Masahiko; Nagano, Yukiko; Yokota, Mitsuhiro; Tauchi, Nobuo; Nishibata, Kenji

doi:10.1016/s0735-1097(96)00412-3

Cited by 419 publications

(570 citation statements)

References 17 publications

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“…The advantage of the OUES is that it can be calculated from submaximal exercise test data and is therefore effort-independent. 39 In healthy children the OUES increases from 1132±149 ml/min/logL in 7-year-old subjects to 2726±602 ml/min/logL in 18-year-old subjects, which shows that the results are influenced by development in children. 40 Work efficiency Work efficiency (∆VO 2 /∆WR) is a measure of the metabolic cost of performing external work.…”

Section: Oxygen (O 2 /Hr) Pulsementioning

confidence: 90%

“…38 OUES was originally developed by Baba et al for children with CHD. 39 OUES is determined from the linear relation of VO 2 (y-axis) vs. the logarithm of minute ventilation (VE) (x-axis) during exercise, i.e. VO 2 = a log 10 VE + b, where a is the OUES and b is the intercept.…”

Section: Oxygen (O 2 /Hr) Pulsementioning

confidence: 99%

“…39 The OUES is a variable that indicates the status of both systemic and pulmonary perfusion, and which explains the high correlation with VO 2peak . The advantage of the OUES is that it can be calculated from submaximal exercise test data and is therefore effort-independent.…”

Section: Oxygen (O 2 /Hr) Pulsementioning

confidence: 99%

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Cardiopulmonary exercise testing in congenital heart disease: (contra)indications and interpretation

Takken¹,

Blank²,

Hulzebos³

et al. 2009

NHJL

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Cardiopulmonary exercise testing in congenital heart disease: (contra)indications and interpretation Cardiopulmonary exercise testing (CPET) in paediatric cardiology differs in many aspects from the tests performed in adult cardiology. Children's cardiovascular responses during exercise testing present different characteristics, particularly oxygen uptake, heart rate and blood pressure response, which are essential in interpreting haemodynamic data. Diseases that are associated with myocardial ischaemia are rare in children. The main indications for CPET in children are evaluation of exercise capacity and the identification of exercise-induced arrhythmias. In this article we will review the main indications for CPET in children with congenital heart disease, the contraindications for exercise testing and the indications for terminating an exercise test. Moreover, we will address the interpretation of gas exchange data from CPET in children with congenital heart disease. (Neth Heart J 2009;17:385-92.)

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Section: Oxygen (O 2 /Hr) Pulsementioning

confidence: 90%

Section: Oxygen (O 2 /Hr) Pulsementioning

confidence: 99%

See 1 more Smart Citation

Cardiopulmonary exercise testing in congenital heart disease: (contra)indications and interpretation

Takken¹,

Blank²,

Hulzebos³

et al. 2009

NHJL

View full text Add to dashboard Cite

show abstract

“…The OUES describes the relationship between V O 2 and V E during incremental exercise via a log transformation of V E and was expressed in L/min as the gradient of the linear relationship of log 10 V E to V O 2 . 21 OUES thus represents the absolute rate of increase in V O 2 per 10-fold increase of V E . HRR (in beats/ min) was defined as the reduction of the heart rate at the peak exercise level compared to the rate 1 min after the cessation of exercise.…”

Section: What This Paper Contributes To Our Knowledgementioning

confidence: 99%

Fat-Free Mass Depletion Is Associated With Poor Exercise Capacity Irrespective of Dynamic Hyperinflation in COPD Patients

et al. 2013

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BACKGROUND:In patients with COPD, we investigated the effect of the fat-free mass (FFM) on maximal exercise capacity and the relationship with changes in operational lung volumes during exercise. METHODS: In a cross-sectional study 57 patients (16 females; age 65 ؎ 8 y) were consecutively assessed by resting lung function, symptom-limited cardiopulmonary exercise test, and body composition by means of bioelectrical impedance analysis to measure the FFM index (FFMI; in kilograms per square meter). RESULTS: Patients were categorized as depleted (n ‫؍‬ 14) or nondepleted (n ‫؍‬ 43) according to FFMI. No significant difference in gender, age, and resting lung function was found between depleted and nondepleted patients. When compared with nondepleted COPD patients, the depleted COPD patients had a significantly lower O 2 uptake at the peak of exercise and at anaerobic threshold as well as at peak oxygen pulse, oxygen uptake efficiency slope (OUES), and heart rate recovery (HRR) (P < .05 for all comparisons), but similar inspiratory capacity/total lung capacity at the peak of exercise. Moreover, they also reported significantly higher leg fatigue (P < .05), but not dyspnea on exertion. In all patients, significant correlations (P < .01) were found between FFMI and peak oxygen pulse, OUES, HRR, and leg fatigue. CONCLUSIONS: This study shows that FFM depletion plays a part in the reduction of exercise capacity in COPD patients, regardless of dynamic hyperinflation, and is strictly associated with poor cardiovascular response to exercise and to leg fatigue, but not with dyspnea.

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“…The stationary gas analysis is proved to be accurate for measurement over a wide range of exercise levels and evaluate parameters like the energetic cost of exercise (Mookerjee et al, 2005), the slow component of VO2 (Demarie et al, 2001), the VO2 efficiency (Baba et al, 1996) and the ventilatory threshold (Fukuba et al, 1988).…”

Section: Laboratory-based Tests Assessing Aerobic Powermentioning

confidence: 99%

Laboratory-based tests for swimmers: methodology, reliability, considerations and relationship with front-crawl performance

Dalamitros¹,

Manou²,

Pelarigo³

2014

JHSE

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Dalamitros, A.A., Manou, V., & Pelarigo, J.G. (2014). Laboratory-based tests for swimmers: methodology, reliability, considerations and relationship with front-crawl performance. J. Hum. Sport Exerc., 9(1), pp.172-187. Monitoring training process in swimming is essential for providing valuable information for both coaches and athletes. Among a large variety of laboratory-based tests used for the quantification of swimmers abilities and evaluation of fitness status, the most representative and easy to apply ones are chosen to be presented in this review. Furthermore, these tests reliability, methodology, referred considerations and relationship with front-crawl swimming performance are reported. Based on the previous mentioned criteria, the assessment of aerobic, anaerobic power and muscular strength, are analyzed. From the data examined, it is concluded that despite their reliability and efficacy in determining adaptations after a training period, as well as, detecting differences between athletes' training status, laboratory-based tests assessing aerobic, anaerobic power and muscular strength for swimmers does not meet the criterion of specificity and disregard the crucial role of technique.

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Oxygen uptake efficiency slope: A new index of cardiorespiratory functional reserve derived from the relation between oxygen uptake and minute ventilation during incremental exercise

Abstract: Our results suggest that OUES may provide an objective, effort-independent estimation of cardiorespiratory functional reserve that is related both to pulmonary dead space and to metabolic acidosis.

Cited by 419 publications

References 17 publications

Cardiopulmonary exercise testing in congenital heart disease: (contra)indications and interpretation

Cardiopulmonary exercise testing in congenital heart disease: (contra)indications and interpretation

Fat-Free Mass Depletion Is Associated With Poor Exercise Capacity Irrespective of Dynamic Hyperinflation in COPD Patients

Laboratory-based tests for swimmers: methodology, reliability, considerations and relationship with front-crawl performance

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