Low-Cost Handgrip Dynamometer in Healthy Adults

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.

Study Overview

• Status: Active, not recruiting
• Conditions: Healthy; Hand Grip Strength

• Study Type: Observational
• Enrollment (Estimated): 177

Contacts and Locations

Study Locations

• Turkey
  • Yalova, Turkey
    • Yalova University
  • Yalova, Turkey, 77200
    • University of Yalova

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: Yes

• Sampling Method: Non-Probability Sample

Study Population

Healthy adults

Description

Inclusion Criteria:

• Healty volunteers with 18-65 years

Exclusion Criteria:

• 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

Study Plan

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
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.	7 days
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.	7 days

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
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).	Baseline
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.	Baseline

Collaborators and Investigators

• Sponsor: University of Yalova
• Investigators: Principal Investigator: Pelin Tiryaki, PhD, University of Yalova

Publications and helpful links

General Publications

• 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.
• 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.
• 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.

Study record dates

Study Major Dates

• Study Start (Actual): April 16, 2025
• Primary Completion (Actual): July 28, 2025
• Study Completion (Estimated): August 30, 2025

Study Registration Dates

• First Submitted: February 19, 2025
• First Submitted That Met QC Criteria: February 19, 2025
• First Posted (Actual): February 25, 2025

Study Record Updates

• Last Update Posted (Actual): July 29, 2025
• Last Update Submitted That Met QC Criteria: July 28, 2025
• Last Verified: July 1, 2025

More Information

Terms related to this study

• Keywords: dynamometer
• Other Study ID Numbers: 2024/293

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No