Wajdi Majid Said. “The Effect of the above-Speed Training Method on the Electric Jogging Device in the Development of Some Functional Variables and the Skillful Performance of Handball Applicants”. Modern Sport, vol. 18, no. 2, June 2019, pp. 215-22, https://jcopew.uobaghdad.edu.iq/index.php/sport/article/view/1543.