Abstract
The purpose of this study was to evaluate possible practice or fatigue effects during grip and pinch strength measurements, using the mean of three trials method. The grip, tip pinch, key pinch, and palmar pinch strength of 49 normal subjects and 49 rehabilitation patients were measured using standard procedures. There was no evidence of a practice or motor learning effect over the three trials. In four out of the 16 measurements, there were statistically significant differences within trials, which indicated some effect of fatigue. However, the differences in means were so small that they are not thought to have clinical significance. The effects of three-trial measurements were not significantly different for the normal and rehabilitation groups.
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