A randomised controlled trial of 1- versus 2-day per week formats of Nordic hamstring training on explosive athletic tasks in prepubertal soccer players - Abdelkader, M.; Hammami, R.; Drury, B.; Clark, N.; Sandercock, G.; Shaw, I.; Shaw, B. S.; Chortane, S. G.; Moran, J. (Journal of Sports Sciences, 2022)