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Reliability of the pinch strength with digitalized pinch dynamometer
Heesuk Shin1, Seung Won Moon, Gab-Soon Kim
1Department of Rehabilitation Medicine, Gyeongsang National University Hospital, Jinju 660-702, Korea.
Annals of Rehabilitation Medicine
|July 28, 2012
Summary
The digitalized pinch muscle strength dynamometer shows reliable results within and between raters. This indicates that it can be used interchangeably with the Preston pinch gauge for grip strength measurements.
Area of Science:
- Orthopedics
- Rehabilitation Medicine
- Biomedical Engineering
Background:
- Accurate measurement of pinch strength is crucial for assessing hand function in various clinical settings.
- Existing tools like the Preston pinch gauge have been widely used, but digitalized alternatives offer potential for improved precision and data logging.
Purpose of the Study:
- To evaluate the intra-rater, inter-rater, and inter-instrument reliability of a digitalized pinch muscle strength dynamometer.
- To compare the reliability of the digitalized dynamometer with the traditional Preston pinch gauge.
Main Methods:
- Thirty healthy subjects participated in the study.
- Pinch strength was measured using both the Preston pinch gauge and the digitalized dynamometer.
- A repeated measures design was employed, with three trials per hand, and measurements taken by two raters.
Main Results:
- High reliability was found between the digitalized dynamometer and the Preston pinch gauge (ICC > 0.78).
- Excellent intra-rater reliability was observed for the digitalized dynamometer (ICC > 0.87).
- Good inter-rater reliability was demonstrated for the digitalized dynamometer (ICC = 0.754).
Conclusions:
- The digitalized pinch muscle strength dynamometer demonstrates high reliability within and between raters.
- The digitalized dynamometer can be considered equivalent to the Preston pinch gauge and used interchangeably for grip strength assessment.
