title: Construct validity of Comprehensive High-Level Activity Mobility Predictor (CHAMP) for male servicemembers with traumatic lower-limb loss.
abstract: This study examined the convergent construct validity of a new performance-based assessment instrument called the Comprehensive High-Level Activity Mobility Predictor (CHAMP) as a measure of high-level mobility in servicemembers (SMs) with traumatic lower-limb loss (LLL). The study was completed by 118 SMs. Convergent construct validity of the CHAMP was established using the 6-minute walk test (6MWT) as a measure of overall mobility and physical function and the Amputee Mobility Predictor (AMP) as a measure of basic prosthetic mobility. The known group methods construct validity examined disparities in high-level mobility capability among SMs with different levels of LLL. The CHAMP score demonstrated a strong positive relationship between 6MWT distance (r = 0.80, p < 0.001) and AMP score (r = 0.87, p < 0.001), respectively. In addition, the CHAMP can discriminate between different levels of LLL. Study findings support the CHAMP as a valid performance-based assessment instrument of high-level mobility for SMs with traumatic LLL.
authors.affiliation: Department of Physical Therapy, Miller School of Medicine, University of Miami, 5915 Ponce de Leon Blvd, Plummer Building, 5th floor, Coral Gables, FL 33146. rgailey@miami.edu.
authors.forename: Robert S
authors.initials: RS
authors.lastname: Gailey
authors.forename: Charles
authors.initials: C
authors.lastname: Scoville
authors.forename: Ignacio A
authors.initials: IA
authors.lastname: Gaunaurd
authors.forename: Michele A
authors.initials: MA
authors.lastname: Raya
authors.forename: Alison A
authors.initials: AA
authors.lastname: Linberg
authors.forename: Paul D
authors.initials: PD
authors.lastname: Stoneman
authors.forename: Stuart M
authors.initials: SM
authors.lastname: Campbell
authors.forename: Kathryn E
authors.initials: KE
authors.lastname: Roach
mesh_terms: D000328:Adult; D000673:Amputation, Traumatic / Q000503:physiopathology / Q000534:rehabilitation*; D001186:Artificial Limbs; D003430:Cross-Sectional Studies; D004185:Disability Evaluation; D005080:Exercise Test; D005269:Femur / Q000293:injuries; D006801:Humans; D007866:Leg; D008297:Male; D008889:Military Personnel / Q000145:classification; D009068:Movement / Q000502:physiology*; D011237:Predictive Value of Tests; D020127:Recovery of Function; D013977:Tibia / Q000293:injuries; D016896:Treatment Outcome; D014481:United States; D016138:Walking / Q000502:physiology; D055815:Young Adult
keywords: 6-minute walk test; Amputee Mobility Predictor; CHAMP; OIF/OEF; agility; construct validity; high-level mobility; lower-limb loss; military personnel; traumatic amputation