Campelo D, Koch AJ, Machado M. Caffeine, lactic acid, or nothing: What effect does expectation have on men’s performance and perceived exertion during an upper body muscular endurance task?. IJHS [Internet]. 2023 Nov. 1 [cited 2024 Nov. 21];17(6):39-42. Available from: https://pub.qu.edu.sa/index.php/journal/article/view/7995