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KMID : 0361420120360030394
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Journal of Korean Academy of Rehabilitation Medicine
2012 Volume.36 No. 3 p.394 ~ p.399
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Reliability of the Pinch Strength with Digitalized Pinch Dynamometer
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Shin Hee-Suk
Moon Seung-Won
Kim Gab-Soon
Park Jeong-Dong
Kim Jin-Hoan
Jung Mi-Jin
Yoon Chul-Ho
Lee Eun-Shin
Oh Min-Kyun
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Abstract
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Objective: To examine the intra-rater, inter-rater, and inter-instrumental reliability of the digitalized pinch muscle strength dynamometer.
Method: Thirty normal subjects were examined for pinch strength, using both the Preston pinch gauge and the digitalized pinch dynamometer. The participants performed all pinch strength tests in the seated position as recommended by the American Society of Hand Therapists (ASHT). Three successive measurements were taken for each hand. The mean of the three trials was used for data analysis. The pinch strength tests performed used a repeated measure design and measurements were taken by each rater.
Results: The relationship between the Preston pinch gauge and the digitalized pinch dynamometer in pinch strength was reliable (the ICC were 0.821 and 0.785 in rater 1 and rater 2 respectively). The relationship between the first session and second session in pinch strength using the digitalized pinch dynamometer was reliable (the ICC were 0.872 and 0.886 in rater A and rater B respectively). The relationship between rater A and rater B in pinch strength using the digitalized pinch dynamometer was reliable (the ICC was 0.754).
Conclusion: The pinch strength measurement using the digitalized pinch dynamometer is reliable within the rater and between raters. Th us, the Preston pinch gauge and the digitalized dynamometer measure grip strength equivalently, and can be used interchangeably.
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KEYWORD
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Pinch strength, Muscle strength dynamometer, Reliability
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