title: Improvement of Repeated-Sprint Ability and Horizontal-Jumping Performance in Elite Young Basketball Players With Low-Volume Repeated-Maximal-Power Training.
abstract: OBJECTIVE
  To examine the effects of a low-volume repeated-power-ability (RPA) training program on repeated-sprint and change-of- direction (COD) ability and functional jumping performance.
  
  
  METHODS
  Twenty-two male elite young basketball players (age 16.2 ± 1.2 y, height 190.0 ± 10.0 cm, body mass 82.9 ± 10.1 kg) were randomly assigned either to an RPA-training group (n = 11) or a control group (n = 11). RPA training consisted of leg-press exercise, twice a week for 6 wk, of 1 or 2 blocks of 5 sets × 5 repetitions with 20 s of passive recovery between sets and 3 min between blocks with the load that maximized power output. Before and after training, performance was assessed by a repeated-sprint-ability (RSA) test, a repeated-COD-ability test, a hop for distance, and a drop jump followed by tests of a double unilateral hop with the right and left legs.
  
  
  RESULTS
  Within-group and between-groups differences showed substantial improvements in slowest (RSAs) and mean time (RSAm) on RSA; best, slowest and mean time on repeated-COD ability; and unilateral right and left hop in the RPA group in comparison with control. While best time on RSA showed no improvement in any group, there was a large relationship (r = .68, 90% CI .43;.84) between the relative decrement in RSAm and RSAs, suggesting better sprint maintenance with RPA training. The relative improvements in best and mean repeated-COD ability were very largely correlated (r = .89, 90% CI .77;.94).
  
  
  CONCLUSIONS
  Six weeks of lowvolume (4-14 min/wk) RPA training improved several physical-fitness tests in basketball players.
authors.affiliation: Faculty of Health Sciences, University of San Jorge, Zaragoza, Spain.
authors.forename: Oliver
authors.initials: O
authors.lastname: Gonzalo-Skok
authors.forename: Julio
authors.initials: J
authors.lastname: Tous-Fajardo
authors.forename: José Luis
authors.initials: JL
authors.lastname: Arjol-Serrano
authors.forename: Luis
authors.initials: L
authors.lastname: Suarez-Arrones
authors.forename: José Antonio
authors.initials: JA
authors.lastname: Casajús
authors.forename: Alberto
authors.initials: A
authors.lastname: Mendez-Villanueva
mesh_terms: D000293:Adolescent; D054874:Athletic Performance / Q000502:physiology*; D001490:Basketball / Q000502:physiology*; D005080:Exercise Test; D006801:Humans; D008297:Male; D009048:Motor Skills / Q000502:physiology; D059385:Plyometric Exercise; D055070:Resistance Training / Q000379:methods*