“The Behavior of Lactatemia and Heart Rate During Efforts With Intensities of Competitions in the Running of the Triathletes of the National Team of Cuba”. Sport and Science 3, no. 1 (January 1, 2018): 22–38. Accessed February 19, 2026. https://cienciaydeporte.reduc.edu.cu/index.php/cienciaydeporte/article/view/74.