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Post-exercise Hot Water Immersion to Improve Overnight Blood Pressure

NCT06348225 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 20

Last updated 2025-08-11

No results posted yet for this study

Summary

The goal of this clinical trial is to test whether putting a participant's legs in a hot bath after exercise improves blood pressure in people with higher blood pressure.

. The main questions it aims to answer are:

* Whether exercise alone, hot water leg bath alone, or both treatments together cause blood pressure to be lower during sleep.
* If there are any changes in heart rhythm or blood vessel health after exercise, hot water leg bath, or the two treatments together that relate to changes in blood pressure.

Participants will complete four different trials:

* 30 minutes of walking with a 45-minute lukewarm leg bath after
* 30 minutes of walking with a 45-minute hot leg bath after
* 45 minutes of a hot leg bath with no exercise
* A day with no exercise or leg bath Researchers will look at heart rhythm, blood vessels, and blood pressure after each of these trials to see if there are differences, and if exercise and heat together can improve heart health more than exercise or heat alone.

Conditions

  • Elevated Blood Pressure

Interventions

BEHAVIORAL

Exercise

Participants will walk on a treadmill for 30 minutes at 55-60% of heart rate reserve. The treadmill will be set at 2mph and 2% grade, then be adjusted in the first 5 minutes to achieve target heart rate.

OTHER

Heat Therapy

Participants will place their legs in a deep leg bath (mid-calf) set to 42C for 45 minutes.

OTHER

Sham leg bath

Participants will place their legs in a deep leg bath (mid-calf) set to 36C for 45 minutes.

Sponsors & Collaborators

  • Providence College

    lead OTHER

Principal Investigators

  • Brett R Ely, PhD · Providence College

Study Design

Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
SINGLE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Max Age
50 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2024-07-01
Primary Completion
2025-12-31
Completion
2025-12-31

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06348225 on ClinicalTrials.gov