Effect of Computer Use on Tactile Perception and Dexterity of Hand in Frequent Computer Users

Abstract

Context: Frequent use of computer involves repetitive tasks of hand. As previous studies imply that repetitive tasks lead to degeneration of the sensory representation of the hand and thus have an effect on sensory motor functions of hand. Aims: The present study aimed to find out the effect of computer use on tactile perception and dexterity of hand in frequent computer users. Settings and Design: The study was cross-sectional, analytic study conducted at the physiotherapy O.P.D. at a tertiary care hospital. Forty adults participated in the study recruited on the basis of computer use. There were 20 frequent users (≥2hours/day, ≥12 months) and 20 occasional users (<2hours/day, <12 months). Methods and Material: Tactile perception was assessed by two point orientation discrimination test using an aesthesiometer and dexterity of hand was assessed by grooved pegboard test using a grooved pegboard. Statistical analysis used: Unpaired t test or Mann Whitney U test was performed according to the distribution of the data in each group. Results: The study showed significant difference for Two point orientation discrimination test in dominant hand (P=0.0033 for thenar and P=0.0043 for hypothenar) and non-dominant hand (P=0.0016 for thenar and P=0.0100 for hypothenar). There was no significant difference for Grooved pegboard test in frequent computer users when compared with occasional users. Conclusions: The present study gives evidence that early signs of deficits occur in people exposed to repetitive computer tasks. KEY WORDS: Computer Use, Repetitive Tasks, Hand Functions, Tactile Perception, Dexterity.