alexa Grip strength in older adults: test-retest reliability and cutoff for subjective weakness of using the hands in heavy tasks.
Physicaltherapy & Rehabilitation

Physicaltherapy & Rehabilitation

International Journal of Physical Medicine & Rehabilitation

Author(s): Wang CY, Chen LY

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Abstract OBJECTIVE: To examine the test-retest reliability of grip strength when using the mean value, the best value, and the first value of 2 grip strength measurements and to determine the cutoff value for separating those who were able or unable to perform a heavy task with their hands in a group of Taiwanese adults. DESIGN: Cross-sectional test-retest study. SETTING: Local community centers. PARTICIPANTS: Community-dwelling older adults (N=469; age, ≥60y). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Self-reported measure of ability to perform heavy tasks with their hands and grip strength. RESULTS: The test-retest reliability of grip strength in older adults was good (intraclass correlation coefficient ≥.85) when using the mean value, the best value, or the first of 2 measurements. Optimum cutoff values were 28.5 and 18.5kg, and values with 75\% sensitivity were 34 and 22kg for men and women, respectively. CONCLUSIONS: The test-retest reliability of grip-strength measurement in a group of Taiwanese older adults was acceptable when the best value, the mean value, or the first of 2 measurements was used. The reported mean and cutoff values for grip strength also could serve as reference values for the public to monitor their grip strength performance and identify those at risk for early intervention. Copyright © 2010 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved. This article was published in Arch Phys Med Rehabil and referenced in International Journal of Physical Medicine & Rehabilitation

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