Schabl, Stephan, and Andreas Konrad. “Effects of a 12-Week Combined Circuit Training Intervention in Physical Education on Motor Performance in Adolescents: A Cluster-Randomized Controlled Trial”. Current Issues in Sport Science (CISS) 11, no. 5 (September 3, 2026): 025. Accessed September 4, 2026. https://ciss-journal.org/article/view/13954.