Breathing for Two: Inspiratory Muscle Strength Training for Supporting Healthy Blood Pressure in Pregnancy

This is an interventional study that will test whether a breathing exercise called Inspiratory Muscle Strength Training (IMST) can safely and effectively lower blood pressure during late pregnancy. The goal is to see if a home-based breathing training can help prevent or reduce high blood pressure disorders in pregnancy. The main objectives are to make sure the training is safe and tolerable for pregnant women and to examine blood pressure and blood vessel health. Participants in their third trimester will be randomly assigned to either do moderate resistance IMST or a minimal resistance sham IMST, for 5 to 8 minutes a day over six weeks.

NCT Number	NCT07687745
Lead Sponsor	University of Arizona Collaborators: Banner University Medical Center
Conditions	Hypertension Disorders in Pregnancy, Blood Pressure Measurement in Pregnancy, Inspiratory Strength Training (IST), Pregnancy
Enrollment	80 participants
Start Date	2026-06-08
Primary Completion	2027-06-30 (estimated)
Study Completion	2027-09-30 (estimated)
Updated on ClinicalTrials.gov	2026-07-07