title: German translation and content validation of the OSTRC Questionnaire on overuse injuries and health problems.
abstract: OBJECTIVE
  The aim of this study was to translate, culturally adapt and validate the Oslo Sports Trauma Research Centre (OSTRC) Questionnaire on Health Problems into the German context.
  
  
  METHODS
  A slightly modified back-translation method was used to translate the questionnaire. Validation was done in 24 high-level Paralympic athletes followed over 20 consecutive weeks.
  
  
  RESULTS
  The translated version of the questionnaire showed a very high internal consistency and good test-retest reliability (Cronbach's α 0.92, intraclass correlation coefficient 0.91). Additionally, we observed high acceptance and compliance from our cohort of athletes, whose mean weekly response rate was 91.5%. Overall, 114 training days were lost because of illness or injury within the 20 weeks and, on average, 5 athletes per week (20.8%) reported health problems.
  
  
  CONCLUSIONS
  This study demonstrates that the translated German version of the OSTRC Questionnaire is a reliable and valid tool with high internal consistency for the medical monitoring of German athletes. The OSTRC-G now offers the opportunity for a continued surveillance of high-level German athletes.
authors: Department of Orthopedics and Trauma Surgery, Center for Surgery, University of Freiburg-Medical Center, Freiburg, Germany.
authors: A
authors: A
authors: Hirschmüller
authors: Norwegian School of Sport Sciences, Oslo Sports Trauma Research Center, Oslo, Norway.
authors: K
authors: K
authors: Steffen
authors: Department of Orthopedics and Trauma Surgery, Center for Surgery, University of Freiburg-Medical Center, Freiburg, Germany.
authors: K
authors: K
authors: Fassbender
authors: Norwegian School of Sport Sciences, Oslo Sports Trauma Research Center, Oslo, Norway.
authors: B
authors: B
authors: Clarsen
authors: Department of Psychology, University of Freiburg, Freiburg, Germany.
authors: R
authors: R
authors: Leonhard
authors: Department of Orthopedics and Trauma Surgery, Center for Surgery, University of Freiburg-Medical Center, Freiburg, Germany.
authors: L
authors: L
authors: Konstantinidis
authors: Department of Orthopedics and Trauma Surgery, Center for Surgery, University of Freiburg-Medical Center, Freiburg, Germany.
authors: N P
authors: NP
authors: Südkamp
authors: Department of Orthopedics and Trauma Surgery, Center for Surgery, University of Freiburg-Medical Center, Freiburg, Germany.
authors: E J
authors: EJ
authors: Kubosch
mesh_terms: D000328:Adult; D056352:Athletes; D001265:Athletic Injuries / Q000453:epidemiology*; D001642:Bicycling / Q000293:injuries*; D012090:Cumulative Trauma Disorders / Q000453:epidemiology*; D005260:Female; D005858:Germany; D006801:Humans; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D014177:Translations
keywords: Athlete; Disabled; Epidemiology; Questionnaire; Validation