Rafli, Muhamad, Muchtar Hendra Hasibuan, and Eko Prabowo. “Efektifitas Proprioceptive Neuromuscular Facilitation Dan Animal Pose Stretching Terhadap Peningkatan Fleksibilitas Otot Hamstring”. Jurnal Olahraga Pendidikan Indonesia (JOPI) 2, no. 2 (March 30, 2023): 129–138. Accessed December 4, 2024. https://jopi.kemenpora.go.id/index.php/jopi/article/view/271.