Al Attar, W. S. A. “The Current Implementation of an Evidence-Based Hamstring Injury Prevention Exercise (Nordic Hamstring Exercise) Among Athletes Globally”. Teorìâ Ta Metodika Fìzičnogo Vihovannâ, Vol. 21, no. 3, Sept. 2021, pp. 273-80, doi:https://doi.org/10.17309/tmfv.2021.3.11.