Smith, L., Semple, S., McKune, A., Neveling, N., Caldeira, M., Swanepoel, J.-M., … Sibanda, E. (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