Oksahmi ZT, D., Adil, A., & Mappanyuki, A. A. (2026). The Influence of Explosive Power, Flexibility and Self-Confidence on the Smash Skills of Badminton Athletes at High School. ETDC: Indonesian Journal of Research and Educational Review , 5(3), 1677–1688. https://doi.org/10.51574/ijrer.v5i3.4462