title: Assessing walking ability in subjects with spinal cord injury: validity and reliability of 3 walking tests.
abstract: OBJECTIVE
  To assess the validity and reliability of 3 timed walking tests (Timed Up & Go [TUG], 10-meter walk test [10MWT], 6-minute walk test) in subjects with spinal cord injury (SCI).
  
  
  METHODS
  Cross-sectional study and repeated assessments.
  
  
  METHODS
  The SCI center of a university hospital in Switzerland.
  
  
  METHODS
  Validity was assessed by using the data of 75 patients with SCI, and reliability was determined with 22 patients with SCI.
  
  
  METHODS
  Patients performed the timed tests and the Walking Index for Spinal Cord Injury II (WISCI II) on the same day. Three measurements within 7 days were taken to assess reliability.
  
  
  METHODS
  The measures were scatterplots, correlation coefficients ( r ), and the Bland-Altman plot. Validity was determined in patients with different walking abilities.
  
  
  RESULTS
  Overall, correlation of the 3 timed walking tests was excellent with each other (| r |>.88) and moderate with the WISCI II (| r |>.60). The correlation between the timed tests for patients with poor walking ability remained high (| r |>.70) but decreased in WISCI II (| r |<.35). High correlation coefficients ( r >.97) were found for intra- and interrater reliability. However, TUG and 10MWT reliability were negatively influenced by a poor walking function.
  
  
  CONCLUSIONS
  The 3 timed tests are valid and reliable measures for assessing walking function in patients with SCI.
authors.affiliation: Spinal Cord Injury Center, Balgrist University Hospital, Zürich, Switzerland. hvanhede@balgrist.unizh.ch
authors.forename: Hubertus J
authors.initials: HJ
authors.lastname: van Hedel
authors.forename: Markus
authors.initials: M
authors.lastname: Wirz
authors.forename: Volker
authors.initials: V
authors.lastname: Dietz
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003430:Cross-Sectional Studies; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D013119:Spinal Cord Injuries / Q000503:physiopathology / Q000534:rehabilitation*; D013647:Task Performance and Analysis; D016138:Walking