Burgess, T., Vadachalam, T., Buchholtz, K., & Jelsma, J. (2019). The effect of the contract-relax-antagonist-contract (CRAC) stretch of hamstrings on range of motion, sprint and agility performance in moderately active males: A randomised control trial. South African Journal of Sports Medicine, 31(1), 1-5. https://doi.org/10.17159/2078-516X/2019/v31i1a6091