Wibowo H, Rahmanto S, Lubis Z. The Relationship Between Sitting Duration And Flexibility Hamstring Muscle In Employees At RSUD Ngimbang. JKF [Internet]. 2023 Oct. 31 [cited 2024 May 17];6(1):10-8. Available from: https://ejournal.medistra.ac.id/index.php/JKF/article/view/1712