“The Effect Of Wall-Rebound Training On Underhand Passing Skills In Volleyball Among Students Participating In  The Volleyball Extracurricular Activity”. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga, vol. 18, no. 1, May 2026, pp. 0703-15, https://doi.org/10.26858/cpjok.v18i1.557.