Muscle activity in the context of ergonomic workspace optimalization for administrative staff during computer use

Abstract

Background. In the prevalent sedentary work environment, where administrative professionals spend 82% of their time seated, this study delves into the musculoskeletal impact of prolonged sitting. Focusing on electromyographic (EMG) muscle activity in various positions, the research explores discomfort disparities between administrative workers and a control group, offering insights for challenges associated with extended sitting. Material and methods. Engaging 31 participants aged 30-40, the study investigates lateralization and discomfort in administrative workers versus a control group. Employing EMG and a Body Part Discomfort Assessment Checklist, the measurements adhere to ergonomic standards. Ethically approved, the study utilizes statistical analyses, uncovering the musculoskeletal effects of occupational postures. Results. EMG muscle activity in left and right upper limb extensors and flexors during diverse postures revealed no significant differences within or between administrative workers and the control group. Discomfort assessments displayed a non-significant trend, with the control group reporting slightly higher discomfort than administrative workers. Conclusions. The findings suggest short-term corrections minimally affect EMG activity, showcasing adaptability to adverse conditions. Administrative workers exhibit lower discomfort during uncorrected sitting, emphasizing adaptability. Although average EMG activity displays no significant difference, further investigations, including pressure algometry, are vital for nuanced insights into the relationship between EMG activity and subjective discomfort in ergonomic interventions.