The Effect of Adjusting the Distance of Keyboards by Ergonomic to Shoulder Pain in Private Employee Aged 16-35 Years.

Abstract

          This study of the effect of adjusting the distance of keyboards by ergonomics were to study the effect of the pain in musculo skeletal disorder and the correcting ergonomic position of working with desktop computer by adjusting the distance from J key on keyboard to edge of the keyboard desk 15 cm. in conjunction with the knowledge in the exercise by stretching muscles of shoulder in private employee.  Population of shoulder pain problem in    Christian university of Thailand, aged 16-35 years of male and female and using computer with keyboard desk were selected. Twenty - six subjects were studied in pre-test and post-test. In the pre-test to    evaluate the risk assessment by using RULA assessment and pain score (VAS) in 2 month, adjusting the distance of keyboard and education of working with computer in correcting ergonomic position. Post - test will assess the risk to compare between pre - test.This study found that before and after intervention in a group received adjusting the distance of keyboard was significantly difference (p < 0.05) and gestures working properly was significant difference (p < 0.05). The risk of musculoskeletal disease and shoulder pain reduction was statistically significant.The study result revealed that the spacing of the keyboard together with the risk assessment (RULA) and evaluation of pain (VAS) reduced pain and corrected posture computer according to ergonomics. For the reducing risk and the prevention of shoulder pain, the working personal should be      designed the working environment and     adjust the correcting ergonomic position.