@article{Henning_Kleynhans_de Villiers_du Toit_2013, title={Comparing the Cardio Stress Index of a training population with University students.}, volume={32}, url={http://www.satnt.ac.za/index.php/satnt/article/view/437}, DOI={10.4102/satnt.v32i1.838}, number={1}, journal={Suid-Afrikaans Tydskrif vir Natuurwetenskap en Tegnologie / <i>South African Journal of Science and Technology</i&gt;}, author={Henning, E. and Kleynhans, M. and de Villiers, N. and du Toit, P.}, year={2013}, month={Dec.}, pages={1 page} }