title: The construct validity of session RPE during an intensive camp in young male Karate athletes.
abstract: BACKGROUND
  the aim of this study was to assess the validity of the session rating of perceived exertion (RPE) method and two objective HR-based methods for quantifying karate's training load (TL) in young Karatekas.
  
  
  METHODS
  eleven athletes (age 12.50±1.84 years) participated in this study. The training period/camp was performed on 5 consecutive days with two training session (s) per-day (d). Construct validity of RPE method in young Karate athletes, was studied by correlation analysis between RPE session's training load and both Edwards and Banister's training impulse score' method.
  
  
  RESULTS
  significant relationship was found between inter-day (n-11 × d-5 × s-2 = 110) sessions RPE and Edwards (r values from 0.84 to 0.92 p < 0.001) and Banister's (r values from 0.84 to 0.97 p < 0.001), respectively.
  
  
  CONCLUSIONS
  this study showed that session-RPE can be considered a valid method for quantifying karate's training load in young karate athletes.
authors.affiliation: Sport Science, University e-Campus, Novedrate, Italy ; Tunisian Research Laboratory "Sports Performance Optimization" National Center of Medicine and Science in Sport, Tunis, Tunisia.
authors.forename: Johnny
authors.initials: J
authors.lastname: Padulo
authors.affiliation: Tunisian Research Laboratory "Sports Performance Optimization" National Center of Medicine and Science in Sport, Tunis, Tunisia ; ISSEP Ksar-Saïd, Manouba University, Tunisia.
authors.forename: Helmi
authors.initials: H
authors.lastname: Chaabène
authors.affiliation: CETAPS, Rouen University, Rouen, France.
authors.forename: Montassar
authors.initials: M
authors.lastname: Tabben
authors.affiliation: Sport Science Program, College of Arts and Sciences, Qatar University, Doha, Qatar.
authors.forename: Monoem
authors.initials: M
authors.lastname: Haddad
authors.affiliation: Ovidius University of Constanta, Romania.
authors.forename: Cecilia
authors.initials: C
authors.lastname: Gevat
authors.affiliation: Faculty of Medicine and Surgery, University of "Tor Vergata" Rome, Italy.
authors.forename: Stefano
authors.initials: S
authors.lastname: Vando
authors.affiliation: Italian Federation Martial Art, Rome, Italy.
authors.forename: Lucio
authors.initials: L
authors.lastname: Maurino
authors.affiliation: Tunisian Research Laboratory "Sports Performance Optimization" National Center of Medicine and Science in Sport, Tunis, Tunisia.
authors.forename: Anis
authors.initials: A
authors.lastname: Chaouachi
authors.affiliation: Tunisian Research Laboratory "Sports Performance Optimization" National Center of Medicine and Science in Sport, Tunis, Tunisia ; Athlete Health and Performance Research Centre, ASPETAR, Qatar; Orthopaedic and Sports Medicine Hospital, Doha, Qatar.
authors.forename: Karim
authors.initials: K
authors.lastname: Chamari
keywords: combat sports; heart rate; karate training; perceived exertion; young athletes