Sex-based differences in the blood pressure responses to muscle metaboreflex activation are consistent between limb and respiratory muscle

The purpose of this study was to compare sex-based differences in the mean arterial blood pressure (MAP) response to limb and inspiratory metaboreflex activation, during relative and absolute workloads. Healthy males (M; n=9) and females (F; n=8) completed pulmonary function testing, forearm volume...

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Published in:Journal of applied physiology (1985) 2024-11, Vol.137 (5), p.1220-1230
Main Authors: Benbaruj, Jenna M, Leahy, Michael G, Jackman, Rachel, Rae, Thora, Boushel, Robert, Foster, Glen E, Sheel, A William
Format: Article
Language:English
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Summary:The purpose of this study was to compare sex-based differences in the mean arterial blood pressure (MAP) response to limb and inspiratory metaboreflex activation, during relative and absolute workloads. Healthy males (M; n=9) and females (F; n=8) completed pulmonary function testing, forearm volume and circumference measurements, and bouts of limb and inspiratory muscle exercise. The exercises performed included bouts of rhythmic handgrip exercise (RHG) and inspiratory pressure threshold loading (PTL) to task failure, performed in a randomized order, and separated by 30 minutes of rest. Participants performed both RHG and PTL at predetermined relative (R) and absolute (A) workloads while cardiopulmonary measurements were recorded continuously. A time-dependent rise in MAP was observed in all participants, regardless of sex, muscle, or workload (p
ISSN:8750-7587
1522-1601
1522-1601
DOI:10.1152/japplphysiol.00187.2024