This was partially corroborated in adult soccer players, where a sprint-to-rest ratio of 1:10 allow adequate recovery of acute performance during 10 sets of 15-m sprints (i.e. < 3 s per sprint), but not during long duration 50-m sprints (i.e. > 6 s per sprint) (Abt et al.,2011). In young subjects the recovery capacity from highintensity plyometric exercises has been reported to be better than in adults (Marginson et al., 2005).