Analysis of the Use of Push Up Board Aids as an Alternative Exercise for Biceps and Triceps Brachii Muscles in the Kediri Regency Karate Sports Branch. JCES [Internet]. 2025 May 26 [cited 2025 Jun. 24];6(1):9-18. Available from: https://ejurnal.ubharajaya.ac.id/index.php/JCESPORTS/article/view/2082