Πηγή: B. Contreras, A. D. Vigotsky, B. J. Schoenfeld, C. Beardsley, D. T. McMaster, J. H. T. Rayneke, J. B. Cronin, “Effects of a six-week hip thrust vs front squat resistance training program on performance in adolescent males: a randomized controlled trial”, The Journal of Strength & Conditioning Research (April 2017, V. 31, No 4, p. 999