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.
Original language | English (US) |
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Pages (from-to) | 919-930 |
Number of pages | 12 |
Journal | Journal of rehabilitation research and development |
Volume | 50 |
Issue number | 7 |
DOIs | |
State | Published - 2013 |
Keywords
- 6-minute walk test
- Agility
- Amputee Mobility Predictor
- CHAMP
- Construct validity
- High-level mobility
- Lowerlimb loss
- Military personnel
- OIF/OEF
- Traumatic amputation
ASJC Scopus subject areas
- Rehabilitation