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HealthyNCT06845072

Low-Cost Handgrip Dynamometer in Healthy Adults

An observational study of Healthy and Hand Grip Strength, run by University of Yalova at 2 sites in Turkey (Türkiye).

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
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Trial summary

The gold standard device for measuring grip strength is the Jamar® Hydraulic Hand Dynamometer. The Jamar® Hydraulic Hand Dynamometer is a high-priced device. It has an analog reading feature. Read more about this study

Who is it for?
Ages 18 to 65 yearsHealthy volunteers can take part
Conditions the study is for
Healthy, Hand Grip Strength
How many people
177 participants
Where
2 sitesTurkey (Türkiye)
Study dates
16 Apr 2025to 30 Aug 2025
Phase
Observational
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 18 to 65 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Study population: Healthy adults

Who may be able to join

  • Healty volunteers with 18-65 years

Who cannot join

  • Using any assistive device,
  • Having rheumatoid arthritis, gout, neuromuscular disease or any acute/chronic disease that may affect grip strength,
  • Pregnancy,
  • Previous subluxation, dislocation or fracture in the upper extremity,
  • Type 1 or Type 2 DM,
  • Unstable chronic and systemic diseases

Trial locations and contacts

2 sites in 1 country.

Turkey (Türkiye)2 sites

  • University of Yalova

    Yalova, 77200

  • Yalova University

    Yalova

Other trials in Turkey (Türkiye)

About this study

Official title: Validity and Reliability a Low-cost Handgrip Dynamometer in Healthy Adults

The gold standard device for measuring grip strength is the Jamar® Hydraulic Hand Dynamometer. The Jamar® Hydraulic Hand Dynamometer is a high-priced device. It has an analog reading feature. The Jamar hydraulic hand dynamometer is recommended by the American Association of Hand Therapists and is considered the gold standard because of its high validity and reliability. Due to its cost, the use of this dynamometer is quite limited in certain countries and settings. However, there is a new version, the JAMAR Plus+, which has a digital reading feature. This version is even more expensive. In recent years, the use of less expensive dynamometers for measuring grip strength has become increasingly common in clinical settings and scientific research. In particular, the Camry Dynamometer, which is ten times cheaper, is frequently used. Despite its frequent use in scientific research, a review of the current literature has shown that the validity and reliability of the Camry has not been examined in healthy populations. Our study compares the Jamar® Hydraulic Hand Dynamometer, the gold standard device for measuring grip strength, with the lower cost and lighter handheld digital Camry dynamometer.

Keywords
dynamometer

What is being measured

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

  1. Maximum handgrip strength - Device 1

    Maximum grip strength is a measure of muscular strength or the maximum force/tension generated by one's forearm muscles.

    Measured: 7 days

  2. Maximum handgrip strength - Device 2

    Maximum grip strength is a measure of muscular strength or the maximum force/tension generated by one's forearm muscles.

    Measured: 7 days

Secondary outcomes (2)

  1. International Physical Activity Questionnaire - Short Form

    The purpose of the questionnaire is to provide common instruments that can be used to obtain internationally comparable data on health-related physical activity. The total score is grouped as inactive (<600 MET-min/week), minimally active (minimum 600 MET-min/week and <3000 MET-min/week) and active (>3000 MET-min/week).

    Measured: Baseline

  2. SBQ - Sedentary Behaviour Questionnaire

    The SBQ was designed to assess the amount of time spent doing 9 behaviors (watching television, playing computer/video games, sitting while listening to music, sitting and talking on the phone, doing paperwork or office work, sitting and reading, playing a musical instrument, doing arts and crafts, sitting and driving/riding in a car, bus, or train). The 9 items were completed separately for weekdays and weekend days.

    Measured: Baseline

Timeline

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

  1. First posted25 Feb 2025
  2. Study start16 Apr 2025
  3. Primary completion28 Jul 2025
  4. Study completion30 Aug 2025 (estimated)

Resources

More details

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

Study design
Study type
Observational
Observational model
Other
Time perspective
Prospective
Enrolment
177 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06845072
Sponsor's protocol ID
2024/293
Status last verified
Jul 2025
First submitted
19 Feb 2025
Last updated
29 Jul 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Undecided

Publications

  • Cildan Uysal S, Tonak HA, Kitis A. Validity, reliability and test-retest study of Grip strength measurement in two positions with two dynamometers: Jamar(R) Plus and K-Force(R) Grip. Hand Surg Rehabil. 2022 Jun;41(3):305-310. doi: 10.1016/j.hansur.2022.02.007. Epub 2022 Mar 10.

    PubMed 35283336

  • Guerra RS, Amaral TF, Sousa AS, Fonseca I, Pichel F, Restivo MT. Comparison of Jamar and Bodygrip Dynamometers for Handgrip Strength Measurement. J Strength Cond Res. 2017 Jul;31(7):1931-1940. doi: 10.1519/JSC.0000000000001666.

    PubMed 28640771

  • Leong DP, Teo KK, Rangarajan S, Lopez-Jaramillo P, Avezum A Jr, Orlandini A, Seron P, Ahmed SH, Rosengren A, Kelishadi R, Rahman O, Swaminathan S, Iqbal R, Gupta R, Lear SA, Oguz A, Yusoff K, Zatonska K, Chifamba J, Igumbor E, Mohan V, Anjana RM, Gu H, Li W, Yusuf S; Prospective Urban Rural Epidemiology (PURE) Study investigators. Prognostic value of grip strength: findings from the Prospective Urban Rural Epidemiology (PURE) study. Lancet. 2015 Jul 18;386(9990):266-73. doi: 10.1016/S0140-6736(14)62000-6. Epub 2015 May 13.

    PubMed 25982160

Questions about this trial

What is this clinical trial studying?

An observational study of Healthy and Hand Grip Strength, run by University of Yalova at 2 sites in Turkey (Türkiye).

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 1 inclusion and 6 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: under way, not looking for participants, as of the sponsor's last update on 29 Jul 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in Turkey (Türkiye). 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?

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?

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?

Maximum handgrip strength - Device 1 (time frame: 7 days). The study lists 2 primary outcomes in all. 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 NCT06845072, which also lists 3 linked publications.

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 29 Jul 2025.

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Low-Cost Handgrip Dynamometer in Healthy Adults | AzTrials