Physiological Signal Analysis for Awkward Working Postures of Construction Workers Using Wearable Biosensors

Awkward working postures are deviations of body parts from their neutral position. Construction workers who hold these postures for a long term are exposed to discomfort, reducing safety and productivity. While several studies have been conducted to assess the effect of awkward postures on human physical and musculoskeletal system like muscles and joints, little research has attempted to explore the impact of awkward posture selection on physiological system. This investigation is necessary for a broader comprehension of risky factors resulting from the awkward working postures of construction workers. Accordingly, this study aims to evaluate if and how physiological responses such as heart rate and skin temperature will be affected by awkward working postures. The study utilizes a non-invasive wearable wristband biosensor to measure and monitor participants' physiological signals during performing construction tasks in a simulated laboratory experiment. Signals in natural and awkward postures are then analyzed, and further comparisons are discussed. The results show that postures have significant impacts on physiological patterns, specifically when sustained for a longer duration. The findings of this study are expected to be used for the recognition of awkward working postures and further for the safety management interventions of worker behavior.