Aerobic High Intensity One-Legged Interval Cycling Improves Peak Oxygen Uptake in Chronic Obstructive Pulmonary Disease Patients; No Additional Effect from Hyperoxia - Bjørgen, S.; Helgerud, J.; Husby, V.; Steinshamn, S.; Richadson, R. R.; Hoff, J. (International Journal of Sports Medicine, 2009)