Key result
Aerobic fitness did not impact the hypercapnic ventilatory response during exercise, but males and females showed differing responses to CO2.
Why the study?
Does aerobic fitness or sex impact the hypercapnic ventilatory response during exercise?
Observational
Does aerobic fitness or sex impact the hypercapnic ventilatory response during exercise?
Aerobic fitness does not impact the hypercapnic ventilatory response during exercise, but there is a sex difference in the response.
Highlights potential sex differences in exercise ventilatory control; leaves open whether fitness alters hypercapnic responses in clinical settings.
The hypercapnic chemoresponse to transient CO 2 showed an increase during acute physical activity; however, this response did not persist with further increases in intensity and was not different between participants of different aerobic fitness. Males and females show a differing response to CO 2 during exercise when compared with an iso-V̇co 2 . Our results suggest that adaptations that lead to increased aerobic fitness do not impact the hypercapnic ventilatory response but there is an effect of sex.
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Mann et al. (2022) reported an observational. Aerobic fitness and sex vs. Untrained individuals and opposite sex was evaluated on Hypercapnic chemoresponse to transient CO2 during exercise. Aerobic fitness did not impact the hypercapnic ventilatory response during exercise, but males and females showed differing responses to CO2.
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