APA
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Espinosa-Ramírez, M., Moya-Gallardo, E., Araya-Román, F., Riquelme-Sánchez, S., Rodriguez-Garcia, G., Reid, W., … Contreras–Briceño, F. (2021). Sex-Differences in the Oxygenation Levels of Intercostal and Vastus Lateralis Muscles During Incremental Exercise. Frontiers in Physiology.
Chicago/Turabian
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Espinosa-Ramírez, Maximiliano, Eduardo Moya-Gallardo, Felipe Araya-Román, Santiago Riquelme-Sánchez, G. Rodriguez-Garcia, W. Reid, Ginés Viscor, O. Araneda, L. Gabrielli, and Felipe Contreras–Briceño. “Sex-Differences in the Oxygenation Levels of Intercostal and Vastus Lateralis Muscles During Incremental Exercise.” Frontiers in Physiology (2021).
MLA
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Espinosa-Ramírez, Maximiliano, et al. “Sex-Differences in the Oxygenation Levels of Intercostal and Vastus Lateralis Muscles During Incremental Exercise.” Frontiers in Physiology, 2021.
BibTeX Click to copy
@article{maximiliano2021a,
title = {Sex-Differences in the Oxygenation Levels of Intercostal and Vastus Lateralis Muscles During Incremental Exercise},
year = {2021},
journal = {Frontiers in Physiology},
author = {Espinosa-Ramírez, Maximiliano and Moya-Gallardo, Eduardo and Araya-Román, Felipe and Riquelme-Sánchez, Santiago and Rodriguez-Garcia, G. and Reid, W. and Viscor, Ginés and Araneda, O. and Gabrielli, L. and Contreras–Briceño, Felipe}
}
This study aimed to examine sex differences in oxygen saturation in respiratory (SmO2-m.intercostales) and locomotor muscles (SmO2-m.vastus lateralis) while performing physical exercise. Twenty-five (12 women) healthy and physically active participants were evaluated during an incremental test with a cycle ergometer, while ventilatory variables [lung ventilation (V.E), tidal volume (Vt), and respiratory rate (RR)] were acquired through the breath-by-breath method. SmO2 was acquired using the MOXY® devices on the m.intercostales and m.vastus lateralis. A two-way ANOVA (sex × time) indicated that women showed a greater significant decrease of SmO2-m.intercostales, and men showed a greater significant decrease of SmO2-m.vastus lateralis. Additionally, women reached a higher level of ΔSmO2-m.intercostales normalized to V.E (L⋅min–1) (p < 0.001), whereas men had a higher level of ΔSmO2-m.vastus lateralis normalized to peak workload-to-weight (watts⋅kg–1, PtW) (p = 0.049), as confirmed by Student’s t-test. During an incremental physical exercise, women experienced a greater cost of breathing, reflected by greater deoxygenation of the respiratory muscles, whereas men had a higher peripheral load, indicated by greater deoxygenation of the locomotor muscles.