Linking physical activity to workers' low back pain, back health, and theory-based psychological variables: study protocol of the workHealth intensive longitudinal observational study. - Wilhelm, Lea O.; Lederle, Nina; Diering, Lotte-Eleonora; Thiel, Lara; Hahn, Sabine; Reschke, Antje; Steckhan, Greta M.; Schmidt, Hendrik; Fleig, Lena (BMC Public Health, 2025)