Lower leg heat therapy to protect pregnant women with obesity
Official title: Vascular and neural mechanisms of chronic lower leg heating in pregnant women with obesity
Funded at Ut Southwestern Medical Center · NIH-11325407 · Data updated 2026-11-12
A study will test whether repeatedly warming the lower legs can improve blood vessel function and lower blood pressure in pregnant women who are obese.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | Ut Southwestern Medical Center NIH-funded |
| Lab location | 1 site (Dallas, United States) |
| Project start | May 1, 2025 |
| Project end | April 30, 2030 |
| Funding year | 2026 |
| Award (this year) | $644,387 |
| NIH project number | 5R01HL172349-02 |
| Project ID | NIH-11325407 on NIH RePORTER |
Who could benefit from this research
✓Could help
Pregnant individuals with obesity between 12–14 weeks of gestation who are able to participate in the heat-exposure protocol.
✕Less likely to help
Patients without obesity or later-stage pregnancy may not benefit from this specific intervention.
What this research studies
This project will enroll 118 pregnant women with obesity in their first trimester and randomly assign them to either a lower-leg heating intervention or usual care. The researchers will examine how the treatment affects blood vessel health, nitric oxide pathways, and sympathetic nervous system activity, aiming to reduce the risk of hypertensive disorders during pregnancy. Over the course of the study, participants will undergo controlled heat exposure to the lower legs and be monitored for vascular responses and blood pressure changes. The goal is to see if a simple, non-drug approach can improve cardiovascular function and potentially improve pregnancy outcomes.
Why it matters
Potential benefit: If successful, this approach could help lower the risk of hypertension-related pregnancy complications in obese women.
How similar studies have gone: Prior work in non-pregnant populations showed improvements in vascular function with whole-body heating, but this study tests lower-leg heating in pregnant women with obesity.
Where this research is happening
-
Ut Southwestern Medical Center
Dallas, United States Active
Researchers
- Principal investigator: Fu, Qi — Ut Southwestern Medical Center
- Study coordinator: Fu, Qi
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About this research
- This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
- Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
- For full project details, budget, and progress reports, visit the official NIH RePORTER page.