“Survey of The Physical Condition of Extracurricular Pencak Silat Students at Shofa Marwa Vocational School, Grobogan Regency”. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga, vol. 17, no. 2, Aug. 2025, pp. 1524-32, https://competitor.idjournal.eu/index.php/competitor/article/view/138.