Arterial hypoxaemia in endurance athletes is greater during running than cycling - Rice, A. J.; Scroop, G. C.; Thornton, A. T.; McNaughton, N. S.; Rogers, K. J.; Chapman, M. J.; Greville, H. W.; Scicchitano, R.; Gore, C. J. (Respiratory Physiology & Neurobiology, 2000)