F. Sukmana, T. Muhtar, and T. Supriyadi, “Effectiveness of Special Breathing Exercises on Increasing 60-Meter Running Speed for 5th Grade Students of SDN 37 Krui, Ngaras District, Pesisir Barat Regency”, Ind. Jo. Spo. Man., vol. 5, no. 4, pp. 968–978, Nov. 2024.