Isometric Handgrip Exercise for Blood Pressure Management

December 14, 2020 updated by: Deb Carlson, University of New England, Australia

Cardiovascular Response to Isometric Resistance Training in People With Hypertension for Blood Pressure Management

Recent meta-analyses suggest isometric resistance training (IRT) may be superior to aerobic exercise for lowering blood pressure. The investigators intend to conduct the largest, longest, prospective, double-blind randomized controlled trial using isometric resistance training to reduce blood pressure to reduce hypertension.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

We are looking to assess the effect of isometric exercise on ambulatory blood pressure in participants aged 40-70 years who are either pre- or mild hypertensive; either un-medicated or taking medication to control their blood pressure. Our secondary aims are to examine whether the size of blood pressure change is different in those people taking or not taking anti-hypertensive medication, to determine the anti-hypertensive mechanism to IRT, and to establish rate of de-training effects after participants have ceased IRT.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
80

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • 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

  • Australia
    • New South Wales
      • Armidale, New South Wales, Australia, 2351
        • UNE Exercise Physiology Lab

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

30 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Blood pressure above 120/80 currently not taking anti-hypertensive medications whose doctor has suggested would benefit from exercise; and
  • people currently taking beta blockers for blood pressure management.

Exclusion Criteria:

  • Younger than 30yrs and older than 70 yrs;
  • unable to voluntary participate;
  • unable to participate under doctor's recommendation;
  • smokers;
  • arthritis or carpal tunnel which may be aggravated with handgrip exercise;

  • known cardiovascular disease (angina) and the following co-morbid conditions:

    • obesity,
    • insulin resistance,
    • depression,
    • mobility impairment,
    • sleep apnoea,
    • fatty liver disease or
    • renal disease

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: Treatment
  • Allocation: Randomized
  • Interventional Model: Factorial Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Sham Comparator: IHG 5% Un-medicated
Participants with high blood pressure (greater than 120/80) who are not medicated for blood pressure control will conduct isometric handgrip (IHG) exercise at 5% of their maximum voluntary contraction (MVC). Isometric resistance training will be conducted three times a week for 12 weeks, with participants conducting 4 x 2min IHG exercises at each session.
Other: Isometric resistance training
Isometric handgrip exercise using a hand dynamometer
Sham Comparator: IHG 5% BB
Participants with high blood pressure (greater than 120/80) who are currently taking beta blockers for blood pressure control will conduct isometric handgrip exercise at 5% of their maximum voluntary contraction (MVC). Isometric resistance training will be conducted three times a week for 12 weeks, with participants conducting 4 x 2min IHG exercises at each session.
Other: Isometric resistance training
Isometric handgrip exercise using a hand dynamometer
Experimental: IHG 30% Un-medicated
Participants with high blood pressure (greater than 120/80) who are not medicated for blood pressure control will conduct isometric handgrip exercise at 30% of their maximum voluntary contraction (MVC). Isometric resistance training will be conducted three times a week for 12 weeks, with participants conducting 4 x 2min IHG exercises at each session.
Other: Isometric resistance training
Isometric handgrip exercise using a hand dynamometer
Experimental: IHG 30% BB
Participants with high blood pressure (greater than 120/80) who are currently taking beta blockers for blood pressure control will conduct isometric handgrip exercise at 30% of their maximum voluntary contraction (MVC). Isometric resistance training will be conducted three times a week for 12 weeks, with participants conducting 4 x 2min IHG exercises at each session.
Other: Isometric resistance training
Isometric handgrip exercise using a hand dynamometer

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Change in systolic and diastolic blood pressure
Time Frame: Change measures: baseline and 12 weeks
Change measures: baseline and 12 weeks

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Compare and contrast change in systolic and diastolic blood pressure of medicated and un-medicated participants
Time Frame: Baseline and 12 weeks
Baseline and 12 weeks
Detraining effects, changes in systolic and diastolic blood pressure after cessation of Isometric Resistance Training
Time Frame: 12 weeks and 24 weeks
End of exercise protocol and 12 weeks after completion
12 weeks and 24 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of New England, Australia

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Neil Smart, PhD, University of New England

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
February 1, 2016

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2016

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2016

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
May 21, 2015

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 27, 2015

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 1, 2015

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
December 17, 2020

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 14, 2020

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
December 1, 2020

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • UNewEngland

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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