2017
DOI: 10.5935/abc.20170104
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Minute-Ventilation Variability during Cardiopulmonary Exercise Test is Higher in Sedentary Men Than in Athletes

Abstract: BackgroundThe occurrence of minute-ventilation oscillations during exercise, named periodic breathing, exhibits important prognostic information in heart failure. Considering that exercise training could influence the fluctuation of ventilatory components during exercise, we hypothesized that ventilatory variability during exercise would be greater in sedentary men than athletes.ObjectiveTo compare time-domain variability of ventilatory components of sedentary healthy men and athletes during a progressive maxi… Show more

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Cited by 9 publications
(13 citation statements)
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References 26 publications
(34 reference statements)
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“…Based on our original premise of change in minute-ventilation and ventilatory efficiency through altered central hemodynamics during exercise in COPD/LVDD compared to controls, we expected a significant loss of fractal properties in this group. In healthy people, V´E/V´CO 2 correlated positively and significantly with V T variability, pointing to a possible influence of the ventilation-perfusion ratio on ventilatory variability in healthy volunteers [29]. We did not confirm this correlation for COPD (data not shown).…”
Section: Exercise Capacity Ventilatory Constraints and Variabilitymentioning
confidence: 70%
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“…Based on our original premise of change in minute-ventilation and ventilatory efficiency through altered central hemodynamics during exercise in COPD/LVDD compared to controls, we expected a significant loss of fractal properties in this group. In healthy people, V´E/V´CO 2 correlated positively and significantly with V T variability, pointing to a possible influence of the ventilation-perfusion ratio on ventilatory variability in healthy volunteers [29]. We did not confirm this correlation for COPD (data not shown).…”
Section: Exercise Capacity Ventilatory Constraints and Variabilitymentioning
confidence: 70%
“…The tricuspid reflux velocity was obtained through continuous Doppler at the right ventricle inlet, and the pulmonary arterial systolic pressure was calculated with the addition of 10 mmHg of pressure in the right atrium. Final diagnosis and classification of LVDD was based on standard guidelines 29 and with septal and lateral e' adjusted by age [28].…”
Section: Techniques and Proceduresmentioning
confidence: 99%
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“…Relation between minute ventilation and oxygen uptake at peak treadmill exercises was constructed for the study. Treadmill has been commonly used to investigate cardiorespiratory responses to physical activities [9,10,11]. Wu et al [12] used a finite state model to quantify respiratory motion characteristics.…”
Section: Introductionmentioning
confidence: 99%