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Azhar Fadillah Nasution; Farhan Qalbi; Amos Togatorop; Muhammad Zacky Al Hijjrih; Pintari Harefa; Nurhayati Simatupang. Pengembangan Program Stretching Sport-Specific Untuk Atlet Renang Gaya Bebas. Journal of Education and Learning Evaluation 2026, 3, 237-245.