Consolidated reference values for grip strength of adults 20 to 49 years : a descriptive meta-analysis

• Building on a previous meta-analysis, this study focused on the utility of consolidating grip strength data from apparently healthy subjects 20-49 years of age. All data were obtained using a Jamar dynamometer and procedures generally consistent with the recommendations of the American Society of Hand Therapists. The meta-analysis revealed that the seven sources provided homogeneous data (Q = 0.21 -0.81, p ≥ 0.667) for the left and right sides of men and women subjects. Means and confidence intervals are provided that can be used to interpret the normality of grip strength obtained from men and women 20-49 years of age. By consolidating the data from multiple studies conducted in five countries, a better overall estimate of normal is obtained. Providing reference values for three decades combined simplifies normative comparisons.

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