Upper Limb Muscle Fatigue Prediction Using Regression Analysis: A Case Study In Automotive Industry In Malaysia

Abstract

Kajian ini dijalankan untuk mengenal pasti aktiviti tugasan terhadap biceps brachii dan tindak balas otot atas trapezius semasa tugasan berulang semasa melakukan pemasangan tayar dalam industri automotif. Matlamat ini adalah untuk mengenal pasti jangka masa untuk kelesuan bagi kedua–dua otot dan seterusnya membuat perbandingan dengan aktiviti otot semasa proses tugasan yang berulang dilakukan. Sebanyak 30 bacaan electromiografi (EMG) diambil daripada tiga sampel yang dipilih di bahagian pemasangan mengangkat tayar. Bacaan diambil dalam tempoh dua jam tiga puluh minit untuk setiap sampel. Keputusan mendapati bahawa nilai root mean square (RMS) voltan bagi ketiga–tiga sampel adalah sama. Daripada kajian ini, dapat disimpulkan bahawa masa untuk kelesuan bagi otot untuk tugasan tertentu boleh diramalkan. Kata kunci: Kelesuan otot; analisis regresi; elektromiografi; pemasangan tayar. A study was conducted to investigate the effect of task activities on biceps brachii and upper trapezius muscle response during repetitive tasks at tyre assembly in an automotive industry. The aim fo the study is to determine time duration before fatigue occurs to both muscles and to compare the muscle activities during the repetitive process. Thirty electromyography (EMG) readings were taken from three selected samples at the tyre lifting assembly line. Readings were taken in the whole duration of two hous and thirty minutes per sample activities. The results indicated that similar root–mean–square (RMS) values of voltage patterns were obtained for the three samples and show that time duration before fatigue occurs to muscles on a particular task could be predicted. Key words: Muscle fatigue; regression analysis; electromyography; tyre assembly