Wibowo, H., S. Rahmanto, and Z. Lubis. “The Relationship Between Sitting Duration And Flexibility Hamstring Muscle In Employees At RSUD Ngimbang”. JURNAL KEPERAWATAN DAN FISIOTERAPI (JKF), vol. 6, no. 1, Oct. 2023, pp. 10-18, doi:10.35451/jkf.v6i1.1712.