Measuring factors affecting grip strength base on ASHT (American society of hand therapists

Measurement of grip strength is important in medical and ergonomy science. This study has two main aims. First, determine the relationship between anthropometric variables and grip strength, tow Prioritization of these variables in predicting grip strength. In this applied research, 204 people were participated and their hands were measured by Digital caliper (Model: Mitutoyo Corp., Tokyo, Japan, resolution 0.01 mm and precision 0.01 mm). Grip strength was measured using the Jamar hand dynamometer The testing position was as recommended by The American Society Of Hand Therapists (ASHT). The results showed that there is a direct relationship between the hand dimensions and Grip strength. Pearson correlation coefficient indicates a direct relationship exists between the hand dimensions, height, body mass index, and grip strength. Dominant hand was significantly stronger than the other (p<0.001). The results show a strong correlation between anthropometric factors and grip strength. Height factor with a correlation coefficient of 0.63, then the maximum width (vertical) with a correlation coefficient of 0.33 have had a significant role in grip strength. Therefore, the height and hand width parameter scan be used to predict grip strength.