title: Optimal Interval for Success in Judo World-Ranking Competitions.
abstract: OBJECTIVE
  To determine the optimal interval between competitions for success in the different events of the judo world tour.
  
  
  METHODS
  A total of 20,916 female and 29,900 male competition participations in the judo world-tour competitions held between January 2009 and December 2015 were analyzed, considering the dependent variable, winning a medal, and the independent variables, levels of competition.
  
  
  RESULTS
  There was an increased probability of winning a medal when the interval was in the 10- to 13-wk range for both male and female athletes competing at Grand Prix, Continental-Championship, and World-Championship events, whereas for Grand Slam, only men had an increased probability of winning a medal in this interval range. Furthermore, men had increased probability of podium positions in Continental Championship, World Master, and Olympic Games when the interval was longer than 14 wk.
  
  
  CONCLUSIONS
  Optimal interval period between successive competitions varies according to competition level and sex; shorter intervals (6-9 wk) were better for female athletes competing at the lowest competition level (Continental Open), but for most of the competitions, the 10- to 13-wk interval was detected as optimal for both male and female athletes (Grand Prix, Continental Championship, and World Championship), whereas for the ranking-based qualified male competitions (ie, Masters and Olympic Games), a longer period (>14 wk) is needed.
authors.forename: Emerson
authors.initials: E
authors.lastname: Franchini
authors.forename: Monica Y
authors.initials: MY
authors.lastname: Takito
authors.forename: Rodrigo M
authors.initials: RM
authors.lastname: da Silva
authors.forename: Seihati A
authors.initials: SA
authors.lastname: Shiroma
authors.forename: Lance
authors.initials: L
authors.lastname: Wicks
authors.forename: Ursula F
authors.initials: UF
authors.lastname: Julio
mesh_terms: D054874:Athletic Performance; D003163:Competitive Behavior; D005260:Female; D006801:Humans; D008297:Male; D016139:Martial Arts; D064797:Physical Conditioning, Human; D012737:Sex Factors; D013997:Time Factors; D055815:Young Adult
keywords: combat sports; elite athletes; performance; ranking