Bismar, A. R., and N. M. Amahoru. “The Relationship Between Abdominal Muscle Strength and Arm Muscle Strength With the Ability to Throw the Ball Inside in a Football Game”. Journal of Sport Education, Coaching, and Health (JOCCA), vol. 5, no. 2, June 2024, pp. 117-23, doi:10.35458/jc.v5i2.2496.