The Effect of Pelvic Floor Muscle Exercises on the Inferior Vena Cava

Inclusion Criteria: Experimental group * Being pregnant between the ages of 18-40, * At least primary school graduate and able to read and write, * The gestational age is 20-40 weeks, * Not having any mental problems that prevent cooperation and understanding. Control group * Being a non-pregnant woman who is in the same age range as the experimental group, * At least primary school graduate and able to read and write, * Not having any mental problems that prevent cooperation and understanding. Exclusion Criteria: * Pregnant women with acute or chronic diseases with poor placental adaptation and vascular damage such as diabetes, chronic arterial hypertension and preeclampsia, as the fetus is closer to the threshold of hypoxia and acidemia and adaptive phenomena may fail, * Pregnant women with intra-uterine growth restriction and fetal anomaly, * Pregnant women with cardiovascular disease, * Pregnant women considered as high risk by the obstetrician, * Pregnant women with premature, premature birth or miscarriage risk, * Pregnant women diagnosed with neurological disease, * Obese women (body mass index \> 30), * Women whose IVC measurements cannot be made with ultrasonography, * Women with severe low back pain (not able to do housework regularly), * Women who have been diagnosed with a psychiatric illness, * Women with a history of gynecological surgery, * Women with pelvic floor dysfunction, * Women who cannot lie in the supine position.