title: The Physical Activity Scale for Individuals with Physical Disabilities: test-retest reliability and comparison with an accelerometer.
abstract: BACKGROUND
  The objective was to determine the test-retest reliability and criterion validity of the Physical Activity Scale for Individuals with Physical Disabilities (PASIPD).
  
  
  METHODS
  Forty-five non-wheelchair dependent subjects were recruited from three Dutch rehabilitation centers. Subjects' diagnoses were: stroke, spinal cord injury, whiplash, and neurological-, orthopedic- or back disorders. The PASIPD is a 7-d recall physical activity questionnaire that was completed twice, 1 wk apart. During this week, physical activity was also measured with an Actigraph accelerometer.
  
  
  RESULTS
  The test-retest reliability Spearman correlation of the PASIPD was 0.77. The criterion validity Spearman correlation was 0.30 when compared to the accelerometer.
  
  
  CONCLUSIONS
  The PASIPD had test-retest reliability and criterion validity that is comparable to well established self-report physical activity questionnaires from the general population.
authors.affiliation: Dept of Public and Occupational Heatlh, and Institute for Research in Extramural Medicine, VU University Medical Center, Amsterdam, The Netherlands.
authors.forename: Hidde P
authors.initials: HP
authors.lastname: van der Ploeg
authors.forename: Kitty R M
authors.initials: KR
authors.lastname: Streppel
authors.forename: Allard J
authors.initials: AJ
authors.lastname: van der Beek
authors.forename: Luc H V
authors.initials: LH
authors.lastname: van der Woude
authors.forename: Miriam
authors.initials: M
authors.lastname: Vollenbroek-Hutten
authors.forename: Willem
authors.initials: W
authors.lastname: van Mechelen
mesh_terms: D006233:Persons with Disabilities; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009043:Motor Activity / Q000502:physiology*; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires