title: Training repeated effort ability in national team male volleyball players.
abstract: OBJECTIVE
  This case study evaluated the effect of repeated lateral movement and jumping training on repeated effort ability in a group of national team male volleyball players.
  
  
  METHODS
  Twelve volleyball players were assessed on their volleyball-specific repeated movement and jumping abilities using a volleyball-specific repeated effort test (RET) before and after 12 weeks of training. The athletes performed between 8 and 9 volleyball training sessions per week, with 5 to 6 of these sessions including specific training aimed at improving repeated effort ability. Typically these training sessions involved 8 to 12 repetitions of 2 to 3 block jumps over a 9-m lateral distance (ie, the athletes had to perform jumps and lateral movements, typical of front court play in volleyball). Population-specific repeatability data were used to determine whether any changes that may have occurred in this study were beyond the minimal clinically important difference (MCID) for this testing procedure.
  
  
  RESULTS
  Improvements in all variables of the RET were observed for each athlete involved in the study, with a small-to-moderate magnitude observed for the mean changes in each variable (Cohen's d, 0.21 to 0.59). All of the improvements in the results exceeded the MCID.
  
  
  CONCLUSIONS
  These findings demonstrate that the RET is sensitive to training-induced changes. Lateral movement speed and repeated lateral movement speed, as well as jumping and repeated jumping ability are trainable qualities in high-performance volleyball players.
authors.affiliation: Australian Institute of Sport, Belconnen, Australia.
authors.forename: Jeremy M
authors.initials: JM
authors.lastname: Sheppard
authors.forename: Tim
authors.initials: T
authors.lastname: Gabbett
authors.forename: Russell
authors.initials: R
authors.lastname: Borgeaud
mesh_terms: D000293:Adolescent; D054874:Athletic Performance / Q000502:physiology*; D015444:Exercise / Q000502:physiology*; D006801:Humans; D008297:Male; D054798:Volleyball / Q000502:physiology*; D055815:Young Adult