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Test-Retest Reliability and Precision of GripAble: A Multipurpose Exergaming Device
Roman Kudin1, Halil Ibrahim Ergen1,2, Corey W McGee1,3
1Program in Occupational Therapy, Center for Allied Health Programs, University of Minnesota, Minneapolis, Minnesota.
Games for Health Journal
|February 12, 2025
Summary
The GripAble device shows excellent reliability and precision for assessing hand grip strength (HGS) in healthy adults. Averaging three trials provides the most accurate and dependable HGS measurements using this novel assessment tool.
Area of Science:
- Rehabilitation Engineering
- Biomechanics
- Clinical Assessment Tools
Background:
- The GripAble device is a new tool for assessing upper limb motor function and for exergaming.
- Evaluating the reliability and precision of new assessment devices is crucial for clinical adoption.
- Hand grip strength (HGS) is a key indicator of overall health and function.
Purpose of the Study:
- To establish the test-retest reliability and precision of the GripAble device for HGS assessment.
- To determine the optimal number of trials (one, two, or three) for reporting HGS using GripAble.
- To assess HGS in healthy-handed adults using the GripAble device.
Main Methods:
- Recruited a diverse sample of 36 healthy-handed adults.
- Collected maximal HGS data bilaterally across two sessions, approximately 2 weeks apart.
- Assessed test-retest reliability using intraclass correlation coefficients (ICC) and precision using standard error of measurement and minimal detectable change (MDC).
Main Results:
- All reporting methods demonstrated high reliability (ICC ≥ 0.85).
- Averaging three trials yielded the highest reliability (ICC = 0.97 for dominant, 0.94 for nondominant hands).
- Averaging three trials provided the best precision (MDC% = 12.9% dominant, 18.2% nondominant hands).
Conclusions:
- The GripAble device demonstrates excellent reliability and acceptable precision for assessing maximal HGS in healthy adults.
- Reporting the average of three trials maximizes the reliability and precision of GripAble HGS assessments.
- GripAble shows promise as an HGS assessment device, with future research needed for clinical populations and exergaming applications.
