Résumé
Substantial studies reported musculoskeletal disorders among the working population in the developed country, however, a limited number of studies were conducted in Malaysia. The objective of this cross sectional study was to determine the physical activity risk factors for low back pain among automotive workers in Selangor. Modified Risk Factors Questionnaire (RFQ) was used to assess physical activity with the occurrence of low back pain. The significant physical activities associated with the 12 months point prevalence are lifting weight (<5 kg and 11-23 kg) and climbing stairs, not using any mechanical lifting aid, and postures (extreme bending, pushing and pulling, standing, kneeling, and bending and twisting). These findings indicate that the occupational risk factors mainly the physical demands were significant risk for low back pain among manual material handling (MMH) workers. Work task and workstation design should be regularly evaluated and corrective measures need to be taken. In addition, proper lifting technique and occupational safety and health promotion program should be emphasized among MMH workers.
Résumé
It is well known that low back pain among working population is a global problem throughout the world. However, the current situation of occupational low back pain in Malaysia is still vague due to limited number of studies conducted locally. A cross sectional study was conducted among three automotive industry workers in Selangor, Malaysia from October 2010 to April 2011. This study aims to determine the prevalence and risk factors of low back pain among automotive industry workers performing manual material handling tasks using self-administered questionnaire survey. A modified Standardised Nordic Questionnaire was used to assess low back pain problem, to obtain personal and psychosocial risk factors information. The prevalence of low back pain showed increment in the point prevalence of 57.9%, 49.5%, and 35.1 % for 12 months, one month, and of 7 days respectively. Working hour, frequency of overtime, stress at work, work pace, and faster movement were found to be significantly associated with the 12 months prevalence for low back pain. This finding indicates that psychosocial risk factors are associated to the occurrence of low back pain.