Sex-Differences in the Oxygenation Levels of Intercostal and Vastus Lateralis Muscles During Incremental Exercise.

This study aimed to examine sex differences in oxygen saturation in respiratory (SmO-) and locomotor muscles (SmO-) 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 ( E), tidal volume (Vt), and respiratory rate (RR)] were acquired through the breath-by-breath method. SmO was acquired using the MOXY devices on the and .