- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04200716
Arterial Function After Two Different Physical Exercise Intensities in Prehypertension (PREHTEXVAS)
January 30, 2023 updated by: Luiz Aparecido Bortolotto, University of Sao Paulo General Hospital
Evaluation of Vascular Responses to Moderate-intensity Continuous and High-intensity Interval Physical Exercise in Individuals With Prehypertension: a Randomized Trial
Individuals with prehypertension, diagnosed according to the 7th Brazilian Guidelines on Hypertension with the presence of systolic blood pressure (SBP) between 121 and 139 and / or diastolic (DBP) between 81 and 89 mmHg, are more likely to become hypertensive and to develop cardiovascular complications.
Moreover, they already have alterations in the function of large arteries that may play a role in the development of the disease in the future.
An option in the prevention / treatment of hypertension is the moderate intensity physical training, but high intensity interval training offers the possibility of greater exercise adherence, since it can be performed with less volume and less time spent, with the same benefits than moderate exercise, or even higher, being preferred by the population.
Among these benefits, the investigators can mention the post-exercise hypotension (PEH) which occurs in normotensive, prehypertensive, and hypertensive individuals, due the decreased in sympathetic nerve activity and improved in vascular function.
Also, selected participants with prehypertension can present a profile of masked hypertension, identified only by 24 hours ambulatory BP monitoring (ABPM).
Given the possible differences between vascular responses to exercise intensities, the investigators intend to compare, in prehypertensive patients, the vascular responses of large arteries by noninvasive methods and PEH to a session of high intensity exercise and a session of moderate intensity continuous exercise.
In addition, to study some of the possible physiological variables involved in this response by measuring heart rate variability.
It is expected to find differences in vascular responses according to the presence of masked hypertension.
Twenty two prehypertensive individuals aged between 30 and 60 years of both sexes will be studied.
Subjects will perform cardiopulmonary testing and baseline vascular measurements (central pressure and pulse wave velocity measurements by three different methods), as well as 24 -hour ABPM.
The vascular measurements will be repeated immediately after, and 24 hours after each session.
Each participant will perform the session of one type of exercise in one day, and after three days will perform the other, with random distribution to the sequence of exercise type.
Participants will perform 24-hour ABPM prior to exercise and for 24 hours after each exercise session.
Data will be compared by appropriate statistical analysis.
Study Overview
Status
Active, not recruiting
Conditions
Detailed Description
The measurement of central pressure and pulse wave velocity are achieved by three follow devices: Complior® , Sphygmocor® and Arteriograph®.
The heart rate variability is achieved by Polar® device.
Study Type
Interventional
Enrollment (Anticipated)
22
Phase
- Not Applicable
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
-
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São Paulo, Brazil
- Heart Institute (InCor), Hospital das Clinicas do HCFMUSP
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
30 years to 60 years (Adult)
Accepts Healthy Volunteers
Yes
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Age ≥30 and ≤60 years old
- Prehypertension, according to the 7 th Brazilian Arterial Hypertension Guideline values
- Both sexes
- Those who agree to sign the free and informed consent form
Exclusion Criteria:
- Engaged in other studies or programs of physical activity or training
- In drug treatment (for hypertension or other metabolic disease)
- Smokers
- Unable to perform exercise on exercise bike
- Presence of cardiovascular or metabolic disease (eg diabetes, hypercholesterolemia)
- Pregnant
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: Moderate intensity continuous training - session
The volunteers perform a 30-minute moderate-intensity exercise session on the exercise bike.
|
Moderate exercise continuous exercise 30 minuts session
The high intensity interval exercise sessions are isocaloric to the moderate intensity continuous exercise, therefore, the necessary exercise time equivalent to 30 minutes of the moderate exercise continuous exercise session was calculated.
|
Active Comparator: High intensity interval training - session
The volunteers perform a session of high intensity interval exercise on the exercise bike.
|
Moderate exercise continuous exercise 30 minuts session
The high intensity interval exercise sessions are isocaloric to the moderate intensity continuous exercise, therefore, the necessary exercise time equivalent to 30 minutes of the moderate exercise continuous exercise session was calculated.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Changes in arterial stiffness by piezoelectric method (Complior)
Time Frame: Baseline, immediately after exercise and 24 hours after exercise
|
Changes in arterial function behavior in response to two different physical exercise intensities.
|
Baseline, immediately after exercise and 24 hours after exercise
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Methods of measuring arterial stiffness: piezoelectric, tonometric and oscillometric
Time Frame: Baseline.
|
Comparison of methods of evaluation of early markers of cardiovascular disease.
|
Baseline.
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Changes in heart rate variability
Time Frame: Baseline, immediately after exercise and 24 hours after exercise
|
Changes in heart rate variability
|
Baseline, immediately after exercise and 24 hours after exercise
|
Ambulatory systolic blood pressure measurement
Time Frame: During 24 hours after each exercise session
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Ambulatory measurement of 24-hours ambulatory systolic blood pressure
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During 24 hours after each exercise session
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Ambulatory diastolic blood pressure measurement
Time Frame: During 24 hours after each exercise session
|
Ambulatory measurement of 24-hours ambulatory diastolic blood pressure
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During 24 hours after each exercise session
|
Changes in arterial stiffness by three methods: piezoelectric, tonometric and oscillometric
Time Frame: Baseline, immediately after exercise and 24 hours after exercise.
|
Changes in arterial function behavior in response to two different physical exercise intensities by three methods.
|
Baseline, immediately after exercise and 24 hours after exercise.
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Investigators
- Principal Investigator: Luiz Bortolotto, Heart Institute (InCor), Hospital das Clinicas do HCFMUSP
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
July 3, 2018
Primary Completion (Actual)
October 31, 2021
Study Completion (Anticipated)
July 1, 2023
Study Registration Dates
First Submitted
October 31, 2019
First Submitted That Met QC Criteria
December 12, 2019
First Posted (Actual)
December 16, 2019
Study Record Updates
Last Update Posted (Actual)
January 31, 2023
Last Update Submitted That Met QC Criteria
January 30, 2023
Last Verified
January 1, 2023
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 72503117.0.0000.0068
- 165778/2017-2 (Other Grant/Funding Number: Conselho Nacional Desenvolvimento Científico e Tecnológico)
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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