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]. 2024 May 30 [cited 2024 Dec. 22];5(1):177-86. Available from: https://ejurnal.ubharajaya.ac.id/index.php/JCESPORTS/article/view/2082