Test-retest reliability of electronic hand dynamometer in healthy adults- A cross-sectional study

Abstract

Introduction Hand grip strength (HGS), is a crucial indicator of muscle function and general physical capacity of the elderly. Few tools are available to measure grip strength, including pneumatic instruments, spring devices, and hydraulic systems. However, among these, hydraulic dynamometers, such as the Jamar dynamometer, have been considered the gold standard due to their superior reliability and precision. Despite their advantages, these tools often come with limitations, such as high cost. Hence, the purpose of this study is to estimate the test-retest reliability of the electronic hand dynamometer for grip-strength measurement and also to compare the reliability of the electronic hand dynamometer in flexed and extended elbow.

Methods The participants were recruited via convenience sampling and this ross sectional study followed the procedure as per the American Society of Hand Therapist (ASHT) recommended standardized position for grip strength.

Results The reliability of the electronic hand dynamometer for the right side with the elbow flexed was found to be 0.94 while for left side, it was found to be 0.91. Meanwhile, the reliability for the right side with the elbow extended was found to be 0.98, and for the left side, it was 0.97.

Conclusion The findings of this study demonstrate that the Camry electronic hand dynamometer has excellent reliability in testing grip strength. The grip strength was found to produce maximum strength when measured in an elbow extended position.

hand strengthhandhand grip strengthCamry electronic dynamometerCompeting Interest Statement

The authors have declared no competing interest.

Funding Statement

This study did not receive any funding

Author Declarations

I confirm all relevant ethical guidelines have been followed, and any necessary IRB and/or ethics committee approvals have been obtained.

Yes

The details of the IRB/oversight body that provided approval or exemption for the research described are given below:

Ethical approval for this study was obtained from the Institutional Ethics Committee of JSS Medical College (Approval No: JSS/MC/IEC/02/664/2015-16) prior to commencement of the research and data collection was completed within the original ethics approval period.

I confirm that all necessary patient/participant consent has been obtained and the appropriate institutional forms have been archived, and that any patient/participant/sample identifiers included were not known to anyone (e.g., hospital staff, patients or participants themselves) outside the research group so cannot be used to identify individuals.

Yes

I understand that all clinical trials and any other prospective interventional studies must be registered with an ICMJE-approved registry, such as ClinicalTrials.gov. I confirm that any such study reported in the manuscript has been registered and the trial registration ID is provided (note: if posting a prospective study registered retrospectively, please provide a statement in the trial ID field explaining why the study was not registered in advance).

Yes

I have followed all appropriate research reporting guidelines, such as any relevant EQUATOR Network research reporting checklist(s) and other pertinent material, if applicable.

Yes

Data Availability

The datasets generated and/or analyzed during the current study are available from the corresponding author on request.

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