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Didin Dinasti Hafipudin, Herman Syah, Rindawan. The Effect Of Progressive Relaxation And Concentration Training On Penalty Kick Success In Dangar Putra Fc Football Club. MJPES [Internet]. 2023Apr.30 [cited 2026Jul.15];5(02):403-8. Available from: https://ejournal.unmus.ac.id/index.php/physical/article/view/7631