Main Findings
The results show that the thickness of the TrA and IO muscles (both at rest and during activation) is positively associated with venous CB PO2 values. Similarly, a greater IRD is associated with a more acidic pH and lower oxygen saturation in both arterial and venous CB. It is also noteworthy that the offspring born to women with a greater IRD had higher arterial and venous CB PCO2 and lower pH, and a lower arterial CB oxygen saturation. Moreover, the offspring of the subjects with an IRD above the median had poorer CB gas values.