HANDS ACTIVITY LEVEL AND UPPER EXTREMITY WORK-RELATED MUSCULOSKELETAL DISORDERS IN FEMALE CARPET WEAVERS: A MATCHED CASE-CONTROL STUDY

Abstract

Introduction: Carpet weaving is one of the most common occupations in Iran. Studies have shown that the majority of workers in these industries are women and these people are exposed to high occupational risks such as musculoskeletal disorders (MSDs). This study aimed to evaluate the hands activity level and upper extremity work-related musculoskeletal disorders (UEWMSDs) symptoms in female carpet weavers (FCWs). Methods: This case-control observational study was performed on 150 FCWs of a carpet weaving workshop as a case group and 150 office staff as a control group. In order to assess the risk factors for UEWMSDs, the Hand Activity Level-Threshold Limit Value (HAL-TLV) method was used. The Cornell Musculoskeletal Discomfort Questionnaire (CMDQ) was used to assess the prevalence of UEWMSDs symptoms in the past year. Data were analyzed using SPSS-V 24. Results: The mean final scores of the HAL_TLV for the case and control groups were 1.04 and 0.15, respectively. The results of the statistical analysis showed a statistical significant difference between the mean of HAL, NPF, and HAL_TLV variables in case and control groups ([Formula: see text] [Formula: see text] 0.001). Also, the results showed a statistical significant difference between the mean scores of the incidence of discomfort in the Shoulder, Forearm, and Wrist areas in the case and control groups ([Formula: see text] [Formula: see text] 0.001). Conclusion: The results of this study show the effect of increasing the level of hand activity on UEWMSDs symptoms. To reduce the level of hand activity and UEWMSDs symptoms in FCWs, there should be increased focus on work time, work speed, and the use of ergonomic, lightweight hand tools.