Population
4 normal men
Comparison
CO2 pulse technique following 2 min voluntary… vs CO2 pulses given before hyperventilation
Design
Other
Authors
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Indicates CO2 ventilatory threshold below baseline in some; leaves open relevance to respiratory control models and clinical monitoring.
The study demonstrates that in some individuals, the end-tidal CO2 threshold for ventilatory response lies well below the normal baseline.
Cummin et al. (1992) studied this question.
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