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Work-related musculoskeletal disorders (WMSDs) remain one of the majoroccupational safety and health problems in the European Union nowadays. Thus,continuous tracking of workers' exposure to the factors that may contribute totheir development is paramount. This paper introduces an online approach tomonitor kinematic and dynamic quantities on the workers, providing on the spotan estimate of the physical load required in their daily jobs. A set ofergonomic indexes is defined to account for multiple potential contributors toWMSDs, also giving importance to the subject-specific requirements of theworkers. To evaluate the proposed framework, a thorough experimental analysiswas conducted on twelve human subjects considering tasks that represent typicalworking activities in the manufacturing sector. For each task, the ergonomicindexes that better explain the underlying physical load were identified,following a statistical analysis, and supported by the outcome of a surfaceelectromyography (sEMG) analysis. A comparison was also made with awell-recognised and standard tool to evaluate human ergonomics in theworkplace, to highlight the benefits introduced by the proposed framework.Results demonstrate the high potential of the proposed framework in identifyingthe physical risk factors, and therefore to adopt preventive measures. Anotherequally important contribution of this study is the creation of a comprehensivedatabase on human kinodynamic measurements, which hosts multiple sensory dataof healthy subjects performing typical industrial tasks.

An Online Multi-Index Approach to Human Ergonomics Assessment in the Workplace