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Ali Mardius, Eri Barlian, Nurul Ihsan. The Waist Flexibility and Reaction Speed to Sickle Kicks of Pencak Silat Perisai Diri Athletes. j. lesson learning stud. [Internet]. 2023 May 11 [cited 2024 May 2];6(1):160-4. Available from: https://ejournal.undiksha.ac.id/index.php/JLLS/article/view/61403