van der Zwaard, S, Rougoor, G, van Kasteel, P Y, Greany, J, de Koning, J J, Hill, E, Porcari, J P, Allen, B & Foster, C 2015, ' Graded Exercise Testing Versus Simulated Competition Exercise in Trained Older Males. ', Journal of Cardiopulmonary Rehabilitation and Prevention, vol. 35, no. 6, pp. 423-430 . https://doi.org/10.1097/HCR.0000000000000135 Journal of Cardiopulmonary Rehabilitation and Prevention, 35(6), 423-430. Lippincott Williams and Wilkins