Maldin ahmad Burhan, Dian Estu Prasetyo, 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. JVEIT [Internet]. 2026 Jul. 30 [cited 2026 Aug. 5];7(1):408-13. Available from: https://ejournal.undhari.ac.id/index.php/jveit/article/view/2462