Why the study?
Do voluntary respiratory maneuvers performed before exercise augment cardiac output and prime oxygen uptake in healthy subjects?
Do voluntary respiratory maneuvers performed before exercise augment cardiac output and prime oxygen uptake in healthy subjects?
Pre-exercise breathing maneuvers can augment cardiac output and prime oxygen uptake kinetics, suggesting a potential non-pharmacological tool to improve exercise tolerance in cardiovascular disease.
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May augment pre-exercise hemodynamics in healthy subjects; leaves open translation to cardiovascular disease.
We demonstrate that different breathing maneuvers can augment both right and left-sided cardiac output in healthy subjects. These maneuvers, when performed immediately before exercise, result in a pre-exercise “cardiodynamic” increase in oxygen uptake (V̇o 2 ) associated with a subsequent reduction in the “cardiodynamic” V̇o 2 normally seen during early exercise. We conclude that pre-exercise breathing maneuvers are a plausible tool worthy of additional study to prime V̇o 2 kinetics and improve exercise tolerance in patients with cardiovascular disease.
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Stucky et al. (2022) studied this question.
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