Bolotin A, Bakayev V. Pedagogical conditions necessary for effective speed-strength training of young football players (15-17 years old). J. Hum. Sport Exerc. [Internet]. 2017 Jul. 7 [cited 2024 Apr. 28];12(2):405-13. Available from: https://www.jhse.ua.es/article/view/2017-v12-n2-pedagogical-conditions-effective-speed-strength-trai