Palao, José Manuel, and David Valadés. “Testing Protocol for Monitoring Upper-Body Strength Using Medicine Balls”. Journal of Human Sport and Exercise 8, no. 2 (July 15, 2013): 334–341. Accessed June 23, 2024. https://www.jhse.ua.es/article/view/2013-v8-n2-testing-protocol-for-monitoring-upper-body-strength-u.