Ignatova M, Dikova P. Evaluation of the Applied Set of Exercises with the Intended Purpose to Improve the Abdominal Muscle Strength of the Cheerleader Students at UNWE. НТ. 2021;(4):87-95. Accessed July 23, 2026. https://yb.e-dnrs.org/index.php/rp/article/view/5350