The Effects of Wrist and Arm Exercise Activities on Reducing Work-Related Fatigue Among Eyeglass Assembly Workers: A Case Study

Abstract

        This experimental research aimed to study the level of fatigue among optician assembly workers and to compare the level of fatigue among optician assembly workers after and after the use of physical exercise activities. The population and sample consisted of 40 production workers in an optician manufacturing company in Lat Krabang District, Bangkok, selected using purposive sampling. The research instruments included an ergonomic work fatigue questionnaire comprising three parts: upper arm, lower arm, and wrist, and exercises to reduce wrist pain. The statistical methods used were percentage, mean, and paired samples t-test.

        The research results showed that the sample group rated the highest level of wrist fatigue as fatigue from wrist rotation while handling blower parts, with a score of 197 before the experiment and 56 after the experiment, a decrease of 71.57 percent. Fatigue from wrist movement while handling blower parts was 196 before the experiment and 62 after the experiment, a decrease of 68.36 percent. Lower arm fatigue from raising and lowering the blower part was 186 before the experiment and 88 after the experiment, a decrease of 53.4 percent. Upper arm fatigue from picking up parts was 175 before the experiment and 113 after the experiment, a decrease of 35.42 percent. In terms of hypothesis testing, it was concluded that the levels of fatigue in the three parts of the employee's body—upper arm (.000), lower arm (.000), and wrist (.000)—before and after the wrist exercise activity differed significantly at the .01 statistical level..

Keywords : Fatigue, Ergonomics, Assembly work, Physical exercise.