INTRA- AND INTER-TESTER RELIABILITY AND REFERENCE VALUES FOR HAND STRENGTH
Anneli Peolsson, Rune Hedlund, Birgitta Oberg
A1 Department of Neuroscience and Locomotion, Division of Physiotherapy, Faculty of Health Sciences, Linköping University, Linköping, Sweden
A2 Department of Orthopaedics, Huddinge Hospital, Karolinska Institute, Huddinge, Stockholm, Sweden
The intra- and inter-tester reliability for measurement of handgrip strength and indexgrip strength using the Jamar dynamometer was investigated in 32 healthy volunteers, and the intra-tester reliability in 13 patients with cervical radiculopathy. The results from the reliability studies showed that handgrip and indexgrip strength measured with the Jamar dynamometer is a reliable method (ICC values 0.85-0.98) and can be recommended for use in clinical practice. Age- and sex-specific reference values for handgrip strength and indexgrip strength were measured with the Jamar dynamometer in 101 randomly selected healthy volunteers, aged 25-64 years. The results from the reference value study showed that sex is a more important determinant of hand strength than age, height and body weight. The reference values for hand strength improve the potential for objective evaluation of patients with arm/hand disorders caused by cervical radiculopathy.
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