It has stated that for short duration (i.e. < 6 s) allout efforts, a rest interval of ten-fold the exercise time allow adequate recovery between efforts (Balsom et al.,1992a; 1992b). 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)