Grainger, A., Neville, R., Ditroilo, M., & Comfort, P. (2020). Changes in performance markers and wellbeing in elite senior professional rugby union players during a pre-season period : analysis of the differences across training phases. Journal of Science and Medicine in Sport, 23(1), 20-26. https://doi.org/10.1016/j.jsams.2019.08.012