Effects of different computer typing speeds on acceleration and peak contact pressure of the fingertips during computer typing

Abstract

[Purpose] This study showed the effects of different computer typing speeds on acceleration and peak contact pressure of the fingertips during computer typing. [Subjects] Twenty-one male computer workers voluntarily consented to participate in this study. They consisted of 7 workers who could type 200–300 characteristics/minute, 7 workers who could type 300–400 characteristics/minute, and 7 workers who could type 400–500 chracteristics/minute. [Methods] This study was used to measure the acceleration and peak contact pressure of the fingertips for different typing speed groups using an accelerometer and CONFORMat system. [Results] The fingertip contact pressure was increased in the high typing speed group compared with the low and medium typing speed groups. The fingertip acceleration was increased in the high typing speed group compared with the low and medium typing speed groups. [Conclusion] The results of the present study indicate that a fast typing speed cause continuous pressure stress to be applied to the fingers, thereby creating pain in the fingers.

Effect of postural angle on back muscle activities in aging female workers performing computer tasks

“…Microsoft recently found that the average worker spends seven hours per day in front of a computer 5 ) . Most previous studies related to computer tasks only involved young computer users 6 , 7 ) . Accordingly, it is imperative to investigate the behavior of aging workers performing computer tasks, because computer tasks constitute an increasing part of sedentary work in industrialized countries.…”