title: Reliability of the landing error scoring system-real time, a clinical assessment tool of jump-landing biomechanics.
abstract: BACKGROUND
  There is a need for reliable clinical assessment tools that can be used to identify individuals who may be at risk for injury. The Landing Error Scoring System (LESS) is a reliable and valid clinical assessment tool that was developed to identify individuals at risk for lower extremity injuries. One limitation of this tool is that it cannot be assessed in real time and requires the use of video cameras.
  
  
  OBJECTIVE
  To determine the interrater reliability of a real-time version of the LESS, the LESS-RT.
  
  
  METHODS
  Reliability study.
  
  
  METHODS
  Controlled research laboratory.
  
  
  METHODS
  43 healthy volunteers (24 women, 19 men) between the ages of 18 and 23.
  
  
  METHODS
  The LESS-RT evaluates 10 jump-landing characteristics that may predispose an individual to lower extremity injuries. Two sets of raters used the LESS-RT to evaluate participants as they performed 4 trials of a jump-landing task.
  
  
  METHODS
  Intraclass correlation coefficient (ICC2,1) values for the final composite score of the LESS-RT were calculated to assess interrater reliability of the LESS-RT.
  
  
  RESULTS
  Interrater reliability (ICC2,1) for the LESS-RT ranged from .72 to .81 with standard error of measurements ranging from .69 to .79.
  
  
  CONCLUSIONS
  The LESS-RT is a quick, easy, and reliable clinical assessment tool that may be used by clinicians to identify individuals who may be at risk for lower extremity injuries.
authors.affiliation: Dept of Exercise and Sport Science, University of North Carolina, Chapel Hill, NC, USA.
authors.forename: Darin A
authors.initials: DA
authors.lastname: Padua
authors.forename: Michelle C
authors.initials: MC
authors.lastname: Boling
authors.forename: Lindsay J
authors.initials: LJ
authors.lastname: Distefano
authors.forename: James A
authors.initials: JA
authors.lastname: Onate
authors.forename: Anthony I
authors.initials: AI
authors.lastname: Beutler
authors.forename: Stephen W
authors.initials: SW
authors.lastname: Marshall
mesh_terms: D000293:Adolescent; D001265:Athletic Injuries / Q000517:prevention & control*; D001696:Biomechanical Phenomena; D005260:Female; D006801:Humans; D007869:Leg Injuries / Q000517:prevention & control*; D008297:Male; D008403:Mass Screening; D008889:Military Personnel; D011237:Predictive Value of Tests; D015203:Reproducibility of Results; D018570:Risk Assessment / Q000379:methods*; D014741:Video Recording; D055815:Young Adult