Boutahra, M., B. Demidem, A. C. . Hocine, A. E. Daoudi, K. Bilal, and A. Drissi. “The Connection Between Muscle Mass and Fat Mass Measured by in Body 720 on Maximal Aerobic Speed in under-19 Football Players”. International Journal of Economic Perspectives, vol. 18, no. 1, Aug. 2024, pp. 190-02, http://ijeponline.org/index.php/journal/article/view/555.