Relationship between the Wrist Position and the Power Grip Strength

Abstract

The purpose of this study was to identify the relationship between the wrist position and the power grip strength. Twenty two healthy subjects participated in this study. The maximum power grip strength was measured in each of thirteen wrist positions among volar-dorsiflexion and radial-ulnar deviation.
The results were obtained as follows: (1) the power grip strength was influence by the wrist position. (2) The maximum power grip strength occured when the wrist was in approximately 20 degrees of dorsiflexion and slight ulnar deviation. (3) When the wrist was deviated from the previous position the power grip strength was decreased, especially in volarflexion.
The results of this study indicated that it is essencial to use the same wrist position in grip strength testing and to control the wrist position in grip strengthening exercise.