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HypertensionNCT02670681

Effects of Aerobic Exercise on Blood Pressure Levels of Resistant Hypertensive Subjects

A study testing Aerobic Exercise Training in people with Hypertension and Resistant Hypertension, run by Federal University of Paraíba at 1 site in Brazil.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
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Trial summary

The aim of this intervention study is to evaluate the acute and chronic effects of different intensity (mild, moderate and high intensity) of aerobic exercise on blood pressure levels of subjects classified as resistant hypertension. Read more about this study

Who is it for?
Ages 40 to 70 years
Conditions the study is for
Hypertension, Resistant Hypertension
What is being tested?
Aerobic Exercise Training
Could I receive a placebo?
No, everyone receives an active treatment
How many people
100 participants
Where
1 siteBrazil
Study dates
Nov 2015to Mar 2019
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 40 to 70 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Age between 40 and 70 years
  • Men or women
  • Body mass index under 40 kg / m²
  • Able to participate in exercise
  • No regular physically active in the last 4 months

Who cannot join

  • Smoking; with history of ischemic stroke or hemorrhagic; or coronary heart disease; or obstructive pulmonary disease or chronic restrictive; or diabetes mellitus; or chronic atrial fibrillation.

Trial locations and contacts

1 site in 1 country.

Brazil1 site
  • Physical Training Study Laboratory Applied to Health; Departament of Physical Education

    João Pessoa, Paraíba

Other trials in Brazil

About this study

Official title: Effects of Different Intensities of Aerobic Exercise on Blood Pressure Levels of Resistant Hypertensive Subjects

The aim of this intervention study is to evaluate the acute and chronic effects of different intensity (mild, moderate and high intensity) of aerobic exercise on blood pressure levels of subjects classified as resistant hypertension. Resistant hypertensives subjects aged 40 to 70, men or women with body mass index lower that 40 kg/m² are recruited and subjected in acute phase in three sessions of aerobic exercise: mild, moderate, high intensity; and session control. After, the subjects will be randomly allocated into four intervention groups: mild intensity group, moderate intensity group, high intensity group and control group. In both phases, the subjects have blood pressure data recorded by ambulatory blood pressure monitoring, for clinic and ambulatory analysis. In addition, continuously be registered biological signs of blood pressure (finometer), electrocardiogram (DII derivation) and blood flow (venous occlusion plethysmography) for analysis of cardiac autonomic modulation, vascular autonomic modulation, baroreflex sensitivity, vasodilator response and peripheral vascular resistance.

Being tested
Aerobic Exercise Training
Keywords
Exercise, Aerobic Exercise
Medical subject headings
Hypertension, Motor Activity

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Aerobic Exercise TrainingBehavioural

    8 week of aerobic exercise training in different intensities.

Study groups in NCT02670681
Study groupRoleWhat they receive
Aerobic Exercise Mild IntensityActive comparatorThe subjects engage in aerobic exercise training (8 weeks) of mild intensity (continuous). The intensity is controlled by a corresponding heart rate at anaerobic threshold.
Receives: Behavioral: Aerobic Exercise Training
Aerobic Exercise Moderate IntensityActive comparatorThe subjects engage in aerobic exercise training (8 weeks) of moderate intensity (continuous). The intensity is controlled by a corresponding heart rate between anaerobic threshold and respiratory compensation point.
Receives: Behavioral: Aerobic Exercise Training
Aerobic Exercise High IntensityActive comparatorThe subjects engage in aerobic exercise (8 weeks) of high intensity interval training. The intensity is controlled by a corresponding heart rate above respiratory compensation point.
Receives: Behavioral: Aerobic Exercise Training

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Systolic, diastolic and media blood pressure

    Control in blood pressure levels, assess by the method of Ambulatory Blood Pressure Monitoring (ABPM), from decrease of blood pressure in measurements pre and post-intervention with physical exercise.

    Measured: Pre and post-intervention (8 weeks)

Secondary outcomes (3)
  1. Vasodilator Response

    Improve in vasodilator response, assess by the method of venous occlusion plethysmography, verified by increased of 10% in blood flow in measurements pre and post-intervention with physical exercise.

    Improve in vasodilator response, assess by the method of venous occlusion plethysmography, verified by incresead of 10% in blood flow in measurements pre and post-intervention with physical exercise.

    Measured: Pre and post-intervention (8 weeks)

  2. Autonomic Modulation

    Improve in autonomic modulation, assess by spectral analysis, verified by increased of 10% parasympathetic modulation and/or by decrease of 10% of sympathetic modulation in measurements pre and post-intervention with physical exercise.

    Measured: Pre and post-intervention (8 weeks)

  3. Baroreflex Sensitivity

    Improve in baroreflex sensitivity, assess by alpha index, verified by increased of 10% in sensitivity in measurements pre and post-intervention with physical exercise.

    Measured: Pre and post-intervention (8 weeks)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted2 Feb 2016 (estimated)
  2. Study startNov 2015
  3. Primary completionOct 2018 (estimated)
  4. Study completionMar 2019 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Single blind
Who is masked
Outcomes assessor
Enrolment
100 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02670681
Sponsor's protocol ID
0602/14
Status last verified
Jul 2018
First submitted
28 Jan 2016
Last updated
18 Jul 2018
Results posted
No
Data monitoring committee
No
Individual data sharing
No: Individual data are not the most important points of this study, but the results for the overall sample (external validity of the results found).

Publications

  • Nascimento LS, Santos AC, Lucena J, Silva L, Almeida A, Brasileiro-Santos MS. Acute and chronic effects of aerobic exercise on blood pressure in resistant hypertension: study protocol for a randomized controlled trial. Trials. 2017 Jun 2;18(1):250. doi: 10.1186/s13063-017-1985-5.

    PubMed 28578691

Questions about this trial

What is this clinical trial studying?

A study testing Aerobic Exercise Training in people with Hypertension and Resistant Hypertension, run by Federal University of Paraíba at 1 site in Brazil.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: status not confirmed, as of the sponsor's last update on 18 Jul 2018. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Brazil. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Systolic, diastolic and media blood pressure (time frame: Pre and post-intervention (8 weeks)). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02670681, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 18 Jul 2018.

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