The Effect of Preventive Exercises Using a Flywheel on Improving Eccentric Strength and Flexibility of the Hamstrings in Footballers. JPKO [Internet]. 2026 Oct. 6 [cited 2026 Oct. 9];2(3):158-65. Available from: https://journalpejuang.web.id/index.php/jurnalpkopejuang/article/view/196