Intermittent runs at the velocity associated with maximal oxygen uptake unables subjects to remain at maximal oxygen uptake for a longer time than intense but submaximal runs. - Billat,V.; Slawinski,J.; Bocquet,V.; Demarle,A.; Laffite,L.; Chassaing,P.; Koralsztein,J.P. (Eur J Appl Physiol, 2000)