van Rooyen, M., Hew-Butler, T., & Noakes, T. (2010). Drinking during marathon running in extreme heat: a video analysis study of the top finishers in the 2004 Athens Olympic marathons. South African Journal of Sports Medicine, 22(3), 55–61. https://doi.org/10.17159/2078-516X/2010/v22i3a310