Sprinting and endurance for cyclists and runners

R. McNeill Alexander
2006 American Journal of Physiology. Regulatory Integrative and Comparative Physiology  
ELITE SPRINTERS RUN 100-m races at 10 m/s, but the (different) elite runners who race over 10 km can manage only about 6 m/s over the longer distance. Elite cyclists reach 20 m/s in short sprints but only about 14 m/s over 10 km. It is well known that long races are slower than sprints because they have to be supported almost entirely by aerobic metabolism. Anaerobic metabolism makes higher power outputs possible in sprints, but these higher powers can be sustained only briefly because only a
more » ... mited amount of energy can be liberated anaerobically if there is no time for rest and recovery. In a paper in this issue of the American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, Weyand and colleagues (4) throw new light on these issues by comparing cycling with running. Bundle, Hoyt, and Weyand (1) had previously shown that a runner's maximum speed (maximum velocity; V max ), for a run of duration (t), was well predicted by the empirical equation
doi:10.1152/ajpregu.00784.2005 pmid:16467506 fatcat:5mnotprgbvfsrmapylp447socm