Blood Flow, Pelvic Circulation & Reproductive Health

Ovarian Blood Flow and Egg Quality
Research suggests that ovarian blood flow is closely associated with ovarian function and oocyte quality, particularly in women undergoing assisted reproductive technology (ART).

Reduced ovarian vascularization and increased resistance indices have been linked with poorer ovarian function and reduced reproductive outcomes.

• Lower ovarian blood flow is associated with reduced egg quality and function:

                  https://pmc.ncbi.nlm.nih.gov/articles/PMC9929747

                  https://pmc.ncbi.nlm.nih.gov/articles/PMC5819322
 

Ovarian Blood Flow and Follicle Development
Adequate ovarian circulation plays an important role in follicular development and ovulation. Studies using Doppler ultrasound have shown that decreased ovarian blood flow may be associated with insufficient follicle maturation and lower success rates in assisted reproduction.

• Decreased ovarian blood flow has been associated with poorer follicle maturation and ART outcomes:

                  https://pmc.ncbi.nlm.nih.gov/articles/PMC3454957
 

The Fertility Class includes movement sequences that activate the lower abdominal and pelvic muscles surrounding the ovarian vascular supply, helping support healthy circulation in this region.

Uterine Blood Flow and Implantation
Blood flow to the uterus is an important factor in implantation and early pregnancy. Reduced uterine perfusion has been associated with lower implantation rates and poorer reproductive outcomes in IVF populations.

• Reduced uterine blood flow has been associated with lower implantation rates and pregnancy outcomes:
  https://pmc.ncbi.nlm.nih.gov/articles/PMC10133733
   

Uterine Artery Pulsation Index
Uterine artery blood flow resistance, measured by the pulsatility index (PI), is commonly used in reproductive medicine to evaluate uterine perfusion. Higher PI values are associated with reduced uterine blood flow and may correlate with lower success rates in assisted reproductive treatments.

• A higher pulsation index has been linked to lower fertility and reduced ART success rates:
  https://pmc.ncbi.nlm.nih.gov/articles/PMC4696374

The movement sequences in The Fertility Class engage muscles in the pelvic and lower abdominal region, which may help support circulation to the uterus.

Endometrial Blood Flow and Implantation

Healthy blood flow to the uterine lining plays an important role in implantation. The endometrium (the lining of the uterus) must develop a rich blood supply in order to support embryo implantation and early pregnancy.

Research using Doppler ultrasound has shown that women with stronger blood flow within the endometrium and surrounding tissue tend to have higher implantation and pregnancy rates during IVF treatment.

One study published in Fertility & Sterility found that women with detectable blood flow in both the endometrium and the surrounding subendometrial region had significantly higher pregnancy rates compared with women in whom this blood flow was absent:

                   https://pubmed.ncbi.nlm.nih.gov/12137858
 

Circulation and Endometrial Health

Doppler ultrasound studies demonstrate that stronger endometrial blood flow patterns are associated with improved reproductive outcomes in IVF cycles.

• Increased endometrial blood flow has been associated with improved ART outcomes and higher pregnancy rates.
  https://pmc.ncbi.nlm.nih.gov/articles/PMC11534959
   

By activating the deep abdominal and pelvic muscles, The Fertility Class™ supports healthy pelvic circulation and reproductive physiology.

Reproductive medicine research increasingly recognizes the importance of circulation, vascular health, and pelvic physiology in fertility.

The Fertility Class™ translates this scientific understanding into a structured, accessible movement practice designed to support pelvic circulation, musculoskeletal balance, and overall reproductive health.

Our guided classes provide women with a practical way to incorporate fertility-supportive movement into daily life.

Scientific Note

The Fertility Class movement method is designed based on established principles of reproductive physiology and pelvic circulation. While research continues to explore the relationship between targeted movement and reproductive outcomes, existing studies support the biological importance of pelvic blood flow, vascular health, and nervous system regulation in fertility.