Ismoko AP, Febrianta Y, Pratiwi RDC, Nugraheni I. Analysis Of The Fitness Level Of Indonesian Students (Tksi) In The Upper Classes Of Muhammadiyah University Purwokerto Elementary School In 2025. JIOK [Internet]. 2025 Dec. 30 [cited 2026 Apr. 29];1(1):01-9. Available from: https://ejournal.ump.ac.id/jiok/article/view/395