Firmansyah, A. . A., and N. Indardi. “The Effect of Championship Participation on Training Intensity and Motivation of Pencak Silat Student Athletes at Semarang State University, Indonesia”. Physical Education and Sports: Studies and Research, vol. 4, no. 2, Aug. 2025, pp. 204-11, doi:10.56003/pessr.v4i2.620.