Key result
Unloaded exercise linked to higher peripheral HCVR versus rest, particularly in males.
Why the study?
Does progressive exercise intensity increase peripheral hypercapnic ventilatory response compared to rest in males and females?
Observational
Does progressive exercise intensity increase peripheral hypercapnic ventilatory response compared to rest in males and females?
Exercise increases peripheral hypercapnic chemosensitivity independently of sex, likely driven by central command rather than progressive exercise intensity.
Unloaded exercise augments peripheral HCVR independently of intensity or sex; hypothesis-generating for ventilatory control mechanisms and clinical relevance.
Unloaded exercise significantly increased the peripheral hypercapnic ventilatory response (HCVR) compared with rest. However, increases in exercise intensity did not further augment peripheral HCVR. Males had a greater peripheral HCVR compared with females, but there was no interaction between sex and intensity. The lack of sex interactions suggests the mechanism augmenting the peripheral HCVR with exercise is independent of sex. The increase in peripheral HCVR with exercise is likely due to central command.
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Wright et al. (2023) reported an observational. Unloaded exercise and progressive exercise intensities vs. Rest was evaluated on Peripheral hypercapnic ventilatory response (HCVR). Unloaded exercise significantly increased the peripheral hypercapnic ventilatory response compared with rest, with males having a greater response than females but no sex-by-intensity interaction.
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