The Jamar dynamometer has been widely used in various chronic illnesses and has demonstrated its strength as a potential prognostic indicator. Various stratified normative values have been published using different methodologies, leading to conflicting results. No study used statistical techniques considering the non-Gaussian distribution of the obtained grip strength (GS) values. Jamar GS was assessed in 720 healthy participants, subdivided into seven age decade groups consisting of at least 50 men and 50 women each. Normative values (median and fifth values) were calculated using quantile regressions with restricted cubic spline functions on age. Possible confounding personal factors (hand dominance, length, weight, hobby, and job categorization) were examined. Clinically applicable revised normative values for the Jamar dynamometer, stratified for age and gender, are presented. Hand dominance had no influence. Other personal factors only minimally influenced final values. This study provides revised normative GS values for the Jamar dynamometer.

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Keywords Jamar dynamometer, grip strength, normative values
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Journal Journal of the Peripheral Nervous System
Peters, M.J.H, van Nes, S.I, Vanhoutte, E.K, Bakkers, M, van Doorn, P.A, Merkies, I.S.J, & Faber, C.G. (2011). Revised normative values for grip strength with the Jamar dynamometer. Journal of the Peripheral Nervous System, 16(1), 47–50. doi:10.1111/j.1529-8027.2011.00318.x