Smith, LL, SJ Semple, AJ McKune, N Neveling, M Caldeira, J-M Swanepoel, L Tsomele, M Naidoo, and E Sibanda. 2007. “Changes in Neutrophil Count, Creatine Kinases and Muscle Soreness After Repeated Bouts of Downhill Running”. South African Journal of Sports Medicine 19 (3):86-93. https://doi.org/10.17159/2078-516X/2007/v19i3a260.