Clinical Trial:

Inspiratory Muscle Strength Training for Lowering Blood Pressure

The Integrative Physiology of Aging Laboratory at the University of Colorado Boulder is investigating if 6 weeks of at-home breathing training (inspiratory muscle strength training, IMST) guided by a smartphone app lowers blood pressure and improves blood vessel function to the same extent as IMST delivered in a research setting.

CONTACT US: 303-492-2485 or

Man using breathing device

Do you qualify?

Over 40 years old icon


You are age 18+

High blood pressure icon


Your top blood pressure number is 120 mmHg or higher

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You own an Apple or Android smartphone

How to participate:

Please contact us directly or fill out a screening form by pressing the “APPLY HERE” button below and we will get back to you.

What you get out of participating:

Health Information

We will share and briefly explain health information we collect during the study. This includes results from your physical exam, blood panels, vascular function assessments and blood pressure measurements, all of which you can share with your physician.


We appreciate your time and effort volunteering with us. We will provide monetary compensation for your time and reimburse you for mileage if desired.

Where is the trial taking place?

All study visits will take place at the University of Colorado Boulder campus.

Our laboratory is located at 1805 Colorado Ave, Boulder, CO 80309. You can find our laboratory by clicking here. We will provide you instructions for free parking on campus nearby our offices.

Frequently Asked Questions

A: Our study team takes care of parking for study visits and will compensate you for mileage and your time in the study. Payment is typically received at the end of the study in the form of a check mailed to you ~1 month after you complete it. If you would prefer, we are happy to pay you throughout the study.

There are no direct costs to you participating in the study, though childcare and taking time off of work to travel to the study site and partake in study visits are all things you should consider when deciding to participate.

A: Completing the study will require ~11 hours of your time over the course of the ~9-week study period. This includes screening visits to ensure you meet the eligibility criteria, baseline testing, exercise sessions, and post-intervention testing.

A: In most cases, we can adjust the schedule to accommodate your vacation(s). As long as you are able to complete the intervention (breathing exercises) and access the app, we can work around any trips you are taking.

A: We have shown that IMST is a safe method for improving blood pressure and blood vessel function in midlife/older adults. We screen potential participants for medical conditions that may make it unsafe to participate–this information is reviewed by 2 physicians.

A: Unless instructed by your provider, you should continue taking all medications as prescribed. We may ask you to refrain from consuming over-the-counter supplements before your visits, but this is only for non-prescribed supplements. We ask that you inform us of any lifestyle changes during the course of the study, including changes in medications/supplements (doses included!), exercise routine, and diet, as these could potentially impact our measurements. You should continue your exercise routine during the study. The walking or breathing exercises would be in addition to your current routine.

call us: (303)492-2485
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