Standardized Handgrip Strength Assessment

A JAMAR hydraulic hand dynamometer (Lafayette Instruments, Lafayette, IN, USA) was used to assess dominant handgrip strength. Participants were asked to sit upright in a stable, unarmed, four-legged chair with thighs horizontal and knees at 90°. The dominant hand was selected. Participants kept their flexed elbow tight to the waist, upper arm vertical, lower arm horizontal, and the other arm relaxed. The device was squeezed as hard as possible on setting #2 [38 (link)] and then released. The average value of 3 repeats was recorded [18 (link)]. Muscle strength data were collected by 3 observers, and their reliabilities have been published previously (CCCs ranging from 0.64 for inter-rater to 0.94 for intra-rater reliability [7 (link)]).

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McWilliams D.F., Yue B., Smith S.L., Stocks J., Doherty M., Valdes A.M., Zhang W., Sarmanova A., Fernandes G.S., Akin-Akinyosoye K., Hall M, & Walsh D.A. (2023). Associations of Muscle Strength with Central Aspects of Pain: Data from the Knee Pain and Related Health in the Community (KPIC) Cohort. Journal of Personalized Medicine, 13(10), 1450.

Publication 2023

JAMAR hydraulic hand dynamometer

Device Elbow Knees Muscle strength Thighs

Corresponding Organization : Nottingham Biomedical Research Centre

Other organizations : Eighth Affiliated Hospital of Sun Yat-sen University, Sun Yat-sen University, University of Bristol, Sherwood Forest Hospitals NHS Foundation Trust

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Variable analysis

independent variables

Grip strength measurement using a JAMAR hydraulic hand dynamometer

dependent variables

Dominant handgrip strength

control variables

Participants were asked to sit upright in a stable, unarmed, four-legged chair with thighs horizontal and knees at 90°
The dominant hand was selected
Participants kept their flexed elbow tight to the waist, upper arm vertical, lower arm horizontal, and the other arm relaxed
The device was squeezed on setting #2 [38 (link)]
The average value of 3 repeats was recorded [18 (link)]
Muscle strength data were collected by 3 observers, and their reliabilities have been published previously (CCCs ranging from 0.64 for inter-rater to 0.94 for intra-rater reliability [7 (link)])

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