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Chronic Kidney DiseasesNCT07094906

Handgrip Exercise Training and CKD

A study testing Isometric handgrip exercise training in people with Chronic Kidney Diseases, run by Emory University at 1 site in United States.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
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Trial summary

The purpose of this study is to find out if regular handgrip exercise performed at home can improve blood pressure at rest and during exercise in patients with chronic kidney disease (CKD). Read more about this study

Who is it for?
Ages 45 to 85 years
Conditions the study is for
Chronic Kidney Diseases
What is being tested?
Isometric handgrip exercise training
Type of treatment
Medical device
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
50 participants
Where
1 siteUnited States
Study dates
Sep 2026to Dec 2027
Phase
Interventional
Are there results?
Not yet: the study is under way

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 45 to 85 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patients with CKD (Stages IIIa and IV),
  • Ages 45-85 years who do not regularly exercise (defined as exercising less than 20 minutes twice per week), willing and able to cooperate with the protocol.
  • CKD Stages III and IV will be defined as reduction in estimated glomerular filtration rate (eGFR) to 15-59 cc/minute as calculated by the modified CKD-EPI equations.
  • Patients with CKD must have stable renal function (no greater than a 20% reduction in eGFR over the prior 3 months).

Who cannot join

  • Severe CKD (eGFR<15 cc/minute)
  • Metabolic alkalosis (serum bicarbonate > 28 meq/L)
  • Ongoing drug or alcohol abuse
  • Diabetic neuropathy
  • Any serious systemic disease that might influence survival
  • Severe anemia with hgb level <10 g/dL
Show all 12Show fewer
  • Clinical evidence of congestive heart failure or ejection fraction below 35%, symptomatic heart disease determined by prior electrocardiogram, stress test, and/or history, treatment with central alpha agonists (clonidine)
  • Uncontrolled hypertension with BP greater than 170/100 mm Hg
  • Low blood pressure with BP less than 100/50
  • Pregnancy or plans to become pregnant
  • Current treatment with MAO inhibitors
  • Inability to perform handgrip exercise

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

United States1 site
  • Emory University

    Atlanta, Georgia, 30322

    Jeanie Park, MD, 404-727-1386, jeanie.park@emory.edu

    Fatima Kamal, 404-727-3717

Other trials in United States

About this study

Official title: Neural and Vascular Modulation With Isometric Handgrip Training in Chronic Kidney Disease

The purpose of this study is to find out if regular handgrip exercise performed at home can improve blood pressure at rest and during exercise in patients with chronic kidney disease (CKD).

This study is also intended to understand what causes an increase in blood pressure at rest and during exercise (i.e., increased adrenaline levels, or decreased ability of blood vessels to dilate). Patients with CKD will be recruited from primary care, Nephrology and other subspecialty Clinics throughout the Emory Healthcare System. Participants will attend 4 visits of 2-3 hours and 3 visits of 1-2 hours. The home exercise training will last for 8 weeks.

Read the detailed description

The goal of this study is to learn more about if exercising the grip strength at home can improve blood pressure control. Patients with Chronic Kidney Disease (CKD) have a much higher risk of cardiovascular problems than healthy people. Early results show that patients with CKD have issues controlling their blood pressure. The investigators think that this type of exercise, where you use a grip device to squeeze, might help improve health by lowering blood pressure. Even though the American Heart Association recommends this kind of exercise, not many people are using it. The study population will consist of 50 patients with CKD in stages III and IV. They will do the grip exercise three times a week at home, squeezing a grip device four times for 2 minutes with each hand. The research team will also check their flight-or-flight control and artery health to see how this exercise training might help. The investigators will collect some blood samples to understand what changes are happening in their bodies. Patients with CKD will attend 4 visits of 2-3 hours and 3 visits of 1-2 hours. The home exercise training will last for 8 weeks. Therefore, the approximate study duration is around 12 weeks. Patients with CKD will be recruited from primary care, Nephrology and other subspecialty Clinics throughout the Emory Healthcare System. No bank for specimens or data will be maintained. The informed consent process will occur in-person. This study will help to find new ways to improve CKD cardiovascular health.

Being tested
Isometric handgrip exercise training, Sham Training
Keywords
Handgrip, Isometric handgrip exercise training (IHT), Blood pressure variability
Medical subject headings
Renal Insufficiency, Chronic

What participants receive

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

  • Isometric handgrip exercise trainingDevice

    Also called IHT

    Maximum voluntary contraction (MVC) will be assessed first in both hands using a hand dynamometer with a digital display (Handexer HFEH20); the participant squeezes the hand dynamometer as hard as they can for 3 to 5 attempts to obtain the MVC. The intervention is an 8- week training protocol that consists of handgrip exercises performed by the participant at home. Each cycle of sustained handgrip exercise consists of sustained squeezing of the hand dynamometer at 30% of MVC for 2 minutes (i.e. isometric) followed by 1 minute of rest.

  • Sham TrainingDevice

    Each cycle of sustained handgrip exercise consists of sustained squeezing of the hand dynamometer at 3 - 5% of MVC rather than 30%.

Study groups in NCT07094906
Study groupRoleWhat they receive
Isometric Handgrip TrainingExperimentalThe intervention is an 8-week isometric handgrip training protocol that consists of handgrip exercises performed by the participant at home, with a frequency of three sessions per week. Participants will log their exercise times as well as their perceived rate of exertion and recovery status throughout the 8 weeks.
Receives: Device: Isometric handgrip exercise training
Sham TrainingSham comparatorThe intervention is an 8-week sham training protocol that consists of handgrip exercises performed by the participant at home, with a frequency of three sessions per week. Participants will log their exercise times as well as recovery status and training loads (borg scale) throughout the 8 weeks of intervention.
Receives: Device: Sham Training

What is being measured

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

  1. Change in resting blood pressure (BP)

    Resting BP will be recorded

    Measured: Baseline, 8-weeks post-intervention

  2. Change in standard deviation BP variability

    Resting beat-to-beat BP will be continuously measured for 10 min. Then, the standard deviation, and BP variability in mmHg will be calculated

    Measured: Baseline, 8-weeks post-intervention

  3. Change in average real BP variability

    Resting beat-to-beat BP will be continuously measured for 10 min. Then, the average variability in mmHg will be calculated.

    Measured: Baseline, 8-weeks post-intervention

  4. Change in the coefficient of variation of BP variability

    Resting beat-to-beat BP will be continuously measured for 10 min. Then, the coefficient of variation of BP variability in % will be calculated.

    Measured: Baseline, 8-weeks post-intervention

  5. Change in Brachial artery flow-mediated dilation (FMD)

    FMD of the brachial artery will be measured using doppler ultrasound. The image of the brachial artery will be obtained in the distal third of the arm (2-10 cm above the antecubital fossa) using a multi-frequency linear probe attached to a high-resolution Doppler US.

    Measured: Baseline, 8-weeks post-intervention

  6. Change in Vascular stiffness

    Vascular stiffness will be quantified as pulse wave velocity using applanation tonometry with a high-fidelity micromanometer. It will be reported in meters per second (m/s).

    Measured: Baseline, 8-weeks post-intervention

Secondary outcomes (17)
  1. Change in 24-hour ambulatory BP monitoring (ABPM)

    ABPM will be performed with SpaceLab "On Trak" ambulatory BP monitors. Upper arm readings will be taken for at least 24 hours. BP measurements will be made every 20 minutes from 7 AM to 11 PM (daytime period) and every 30 minutes from 11 PM to 7 AM (nighttime period). Average BP in mmHg will be recorded.

    Measured: Baseline, 8-weeks post-intervention

  2. Change in resting muscle sympathetic nerve activity (MSNA)

    The tungsten microelectrode will be inserted under ultrasound guidance into the peroneal nerve to measure MSNA. Nerve signals are preamplified (gain 1000), amplified (gain 50-100), filtered (700-2000 Hz), rectified, and integrated (time constant 0.1 sec) to obtain a mean voltage display of sympathetic nerve activity that is recorded. Muscle sympathetic bursts are identified by visual inspection and expressed as burst frequency (bursts min).

    Measured: Baseline, 8-weeks post-intervention

  3. Change in BP reactivity to cold pressor test (CPT)

    The CPT will be performed by submerging the participant's hand in cold water (~0-4°C) up to the wrist for 1 minute. BP reactivity to the CPT in mmHg will be recorded.

    Measured: Baseline, 8-weeks post-intervention

  4. Change in heart rate reactivity to cold pressor test (CPT)

    Heart rate reactivity to the CPT in beats per minute will be recorded.

    Measured: Baseline, 8-weeks post-intervention

  5. Change in MSNA reactivity to cold pressor test (CPT)

    The MSNA reactivity in bursts/min will be recorded during the CPT using the tungsten microelectrode.

    Measured: Baseline, 8-weeks post-intervention

  6. Change in BP reactivity to handgrip exercise

    BP reactivity (in mmHg) to handgrip exercise, an isometric hand contraction at 30% of their maximal voluntary contraction (MVC) for 3 minutes followed by inflation of the BP cuff in their upper arm for another 3 minutes, will be recorded.

    Measured: Baseline, 8-weeks post-intervention

  7. Change in heart rate reactivity to handgrip exercise

    Heart rate reactivity in beats per minute will be recorded during the handgrip exercise.

    Measured: Baseline, 8-weeks post-intervention

  8. Change in MSNA reactivity to handgrip exercise

    The MSNA reactivity in bursts/min will be recorded during the handgrip exercise.

    Measured: Baseline, 8-weeks post-intervention

  9. Change in skeletal muscle oxygenation during handgrip exercise

    Skeletal muscle oxygenation will be calculated during handgrip exercise using Near-infrared spectroscopy (NIRS).

    NIRS will measure changes in oxyhemoglobin (oxygenated hemoglobin), deoxyhemoglobin (deoxygenated hemoglobin), and total hemoglobin. Percentage of oxyhemoglobin will be reported.

    Measured: Baseline, 8-weeks post-intervention

  10. Change in interstitial muscle pH during handgrip exercise

    Change in interstitial muscle pH during handgrip exercise will be assessed using NIRS.

    Measured: Baseline, 8-weeks post-intervention

  11. Change in cardiac baroreflex sensitivity

    The spontaneous cardiac baroreflex sensitivity expressed in milliseconds per mmHg (ms/mmHg) will be calculated at baseline, and at the end of the 8-week trial period.

    Measured: Baseline, 8-weeks post-intervention

  12. Change in sympathetic baroreflex sensitivity

    The spontaneous sympathetic baroreflex sensitivity expressed in bursts per 100 heartbeats per mmHg will be calculated at baseline, and at the end of the 8-week trial period.

    Measured: Baseline, 8-weeks post-intervention

  13. Change in Inflammatory markers: C-Reactive Protein (CRP)

    Blood will be collected at baseline, and at the end of the 8-week trial period to measure CRP.

    Measured: Baseline, 8-weeks post-intervention

  14. Change in Inflammatory markers: Interleukin-6 (IL-6)

    Blood will be collected at baseline, and at the end of the 8-week trial period to measure IL-6.

    Measured: Baseline, 8-weeks post-intervention

  15. Change in Inflammatory markers: endothelin

    Blood will be collected at baseline, and at the end of the 8-week trial period to measure endothelin.

    Measured: Baseline, 8-weeks post-intervention

  16. Change in Inflammatory markers: asymmetric dimethyl arginine (ADMA)

    Blood will be collected at baseline, and at the end of the 8-week trial period to measure ADMA.

    Measured: Baseline, 8-weeks post-intervention

  17. Change in Inflammatory markers: phospholipase A2 (PLA-2)

    Blood will be collected at baseline, and at the end of the 8-week trial period to measure PLA-2.

    Measured: Baseline, 8-weeks post-intervention

Timeline

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

  1. First posted31 Jul 2025
  2. Study startSep 2026 (estimated)
  3. Primary completionDec 2027 (estimated)
  4. Study completionDec 2027 (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
Other
Allocation
Randomised
Intervention model
Parallel groups
Masking
Single blind
Who is masked
Outcomes assessor
Enrolment
50 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07094906
Sponsor's protocol ID
STUDY00009157
Status last verified
Jun 2026
First submitted
25 Jul 2025
Last updated
10 Jun 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
Yes
Individual data sharing
Yes: Individual participant data that underline the results reported in this article after deidentification (text, tables, figures, and appendices) will be shared with investigators whose proposed use of the data has been approved by an independent review committee identified for this purpose.

Questions about this trial

What is this clinical trial studying?

A study testing Isometric handgrip exercise training in people with Chronic Kidney Diseases, run by Emory University at 1 site in United States.

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 4 inclusion and 12 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: opening soon, as of the sponsor's last update on 10 Jun 2026. 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 United States. 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. Some participants in this study may receive a placebo. 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?

This study is still under way. Results are not available in the source record yet.

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

Contact Jeanie Park, MD (404-727-1386, jeanie.park@emory.edu), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in resting blood pressure (BP) (time frame: Baseline, 8-weeks post-intervention). The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
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 10 Jun 2026.

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