Why the study?
How do different chemoreceptive drives affect ventilatory response kinetics and breathing pattern during exercise in healthy men?
How do different chemoreceptive drives affect ventilatory response kinetics and breathing pattern during exercise in healthy men?
Hypoxic drive primarily influences the rapid component of exercise hyperpnea, while steady-state breathing patterns are modulated by biomechanical factors.
Should not alter clinical exercise protocols; extends models of hypoxic drive in healthy ventilatory kinetics.
For studying the effects of different chemoreceptive drives on the ventilatory responses to muscular work, experiments were carried out with 16 healthy men. They accomplished a 5-min exercise while breathing with different gas mixtures or after hyperventilation. As was shown, the rapid component of the exercise hyperpnea increased with intensifying the hypercapnic and/or hypoxic stimuli and was reduced or abolished with attenuation of these stimuli. At this, hypoxic drive exerted primary influence on the response kinetics. In the steady-state exercise effects of the chemoreceptive stimuli were modulated by biomechanical factors, which leads to a energetically optimum breathing pattern being formed.
No takes yet. Share an insight, caveat, or question.
Breslav et al. (1989) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: