“Observational methods for the assessment of biomechanical risk factors: validity and limitations: S. Mattioli,1 S. Curti2 | 1Department of Environmental Sciences and Prevention, University of Ferrara; 2Department of Medical and Surgical Sciences, University of Bologna, Italy” (2025) Giornale Italiano di Medicina del Lavoro ed Ergonomia [Preprint]. doi:10.4081/gimle.743.