Maldin ahmad Burhan, Dian Estu Prasetyo, and Ronaldo. “The Effect of Uphill Running Variation Training on 100-Meter Sprint Speed ​​Among Students in the Athletics Extracurricular Program at SMP N 2 Koto Baru: Pengaruh Latihan Variasi Uphill Running Terhadap Kecepatan Lari Sprint 100 Meter Pada Siswa Ekstrakurikuler Atletik SMP N 2 Koto Baru”. Journal of Vocational Education and Information Technology (JVEIT) 7, no. 1 (July 30, 2026): 408–413. Accessed August 5, 2026. https://ejournal.undhari.ac.id/index.php/jveit/article/view/2462.