Amon Sandri Purba, and Irwansyah Siregar. “PENGARUH FAST INTERVAL TRAINING (FIT) TERHADAP HASIL KECEPATAN RENANG GAYA BEBAS 100 METER PADA ATLET K.U II LUMBA-LUMBA SWIMMING CLUB BINJAI TAHUN 2021”. Journal Physical Health Recreation (JPHR) 2, no. 1 (November 22, 2021): 27–33. Accessed August 14, 2026. https://stokbinaguna.ac.id/jurnal/index.php/JPHR/article/view/516.