Please use this identifier to cite or link to this item:
Title: Sex-differences in the oxygenation levels of intercostales and vastus lateralis muscles during incremental exercise
Author: Espinosa-Ramírez, Maximiliano
Moya-Gallardo, Eduardo
Araya-Román, Felipe
Riquelme-Sánchez, Santiago
Rodríguez-García, Guido
Reid, W. Darlene
Viscor Carrasco, Ginés
Araneda, Oscar F.
Gabrielli, Luigi
Contreras-Briceño, Felipe
Keywords: Exercici
Diferències entre sexes
Músculs respiratoris
Sex differences
Respiratory muscles
Issue Date: 1-Oct-2021
Publisher: Frontiers Media
Abstract: 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.
Note: Reproducció del document publicat a:
It is part of: Frontiers in Physiology, 2021, vol. 12, num. e738063, p. 1-11
Related resource:
ISSN: 1664-042X
Appears in Collections:Articles publicats en revistes (Biologia Cel·lular, Fisiologia i Immunologia)

Files in This Item:
File Description SizeFormat 
714035.pdf6.08 MBAdobe PDFView/Open

This item is licensed under a Creative Commons License Creative Commons