TY - JOUR
T1 - Adapted manual wheelchair circuit
T2 - test-retest reliability and discriminative validity in persons with spinal cord injury
AU - Cowan, Rachel E.
AU - Nash, Mark S.
AU - De Groot, Sonja
AU - Van Der Woude, Lucas H.
PY - 2011/8/1
Y1 - 2011/8/1
N2 - Objective: To assess the test-retest reliability and discriminative validity of a 14-item manual wheelchair circuit adapted from previous research (AMWC). Design: Two AMWC trials per subject completed within 15 days. Setting: Two clinical research and 3 rehabilitation centers. Participants: Convenience sample of individuals with spinal cord injury (N=50) from centers in the United States (n=38) and the Netherlands (n=12). Mean age ± SD was 46±13 years, and mean injury duration ± SD was 12±11 years. Fifteen had cervical injuries, and 42 were men. Interventions: An existing 8-task manual wheelchair circuit was modified to remove the need for a wheelchair treadmill and expanded to 14 tasks to attenuate floor and ceiling effects: 5 original tasks - figure-of-8, .012-m doorstep crossing, .10-m platform, 15-m sprint, and making a level transfer; 3 modified tasks - 3% and 6% ramp, and 3-minute overground wheeling; and 6 new tasks - .04-m doorstep crossing, propelling over artificial grass, opening/closing a door, 3% side slope, holding a wheelie for 10 seconds, and propelling in a wheelie. Main Outcome Measures: Reliability of the primary outcomes, sum ability score (sum of all tasks; 0-14 [no.]) and sum performance time (figure-of-8 + sprint + grass; 0-360 [s]), was determined by intraclass correlation coefficients (ICCs) for the whole sample and paraplegia (PP) and tetraplegia (TP) subsets. Independent t tests compared PP and TP trial 1 sum ability score and sum performance time. Results: Sum ability and sum performance time ICCs exceeded .90 for the full sample and the PP/TP subsets. Sum ability was higher for PP than TP (PP, 12.9±1.2; TP, 9.8±2.8; P<.00), and sum performance times were lower for PP than TP (20.0±4.0s vs 32.0±1.97s, P<.00). Conclusions: AMWC primary outcomes, sum ability score and sum performance time, are reliable and discriminate between TP and PP.
AB - Objective: To assess the test-retest reliability and discriminative validity of a 14-item manual wheelchair circuit adapted from previous research (AMWC). Design: Two AMWC trials per subject completed within 15 days. Setting: Two clinical research and 3 rehabilitation centers. Participants: Convenience sample of individuals with spinal cord injury (N=50) from centers in the United States (n=38) and the Netherlands (n=12). Mean age ± SD was 46±13 years, and mean injury duration ± SD was 12±11 years. Fifteen had cervical injuries, and 42 were men. Interventions: An existing 8-task manual wheelchair circuit was modified to remove the need for a wheelchair treadmill and expanded to 14 tasks to attenuate floor and ceiling effects: 5 original tasks - figure-of-8, .012-m doorstep crossing, .10-m platform, 15-m sprint, and making a level transfer; 3 modified tasks - 3% and 6% ramp, and 3-minute overground wheeling; and 6 new tasks - .04-m doorstep crossing, propelling over artificial grass, opening/closing a door, 3% side slope, holding a wheelie for 10 seconds, and propelling in a wheelie. Main Outcome Measures: Reliability of the primary outcomes, sum ability score (sum of all tasks; 0-14 [no.]) and sum performance time (figure-of-8 + sprint + grass; 0-360 [s]), was determined by intraclass correlation coefficients (ICCs) for the whole sample and paraplegia (PP) and tetraplegia (TP) subsets. Independent t tests compared PP and TP trial 1 sum ability score and sum performance time. Results: Sum ability and sum performance time ICCs exceeded .90 for the full sample and the PP/TP subsets. Sum ability was higher for PP than TP (PP, 12.9±1.2; TP, 9.8±2.8; P<.00), and sum performance times were lower for PP than TP (20.0±4.0s vs 32.0±1.97s, P<.00). Conclusions: AMWC primary outcomes, sum ability score and sum performance time, are reliable and discriminate between TP and PP.
KW - Psychomotor performance
KW - Rehabilitation
KW - Reproducibility of results
KW - Spinal cord injuries
KW - Task performance and analysis
KW - Wheelchairs
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U2 - 10.1016/j.apmr.2011.03.010
DO - 10.1016/j.apmr.2011.03.010
M3 - Article
C2 - 21807146
AN - SCOPUS:79961090795
SN - 0003-9993
VL - 92
SP - 1270
EP - 1280
JO - Archives of Physical Medicine and Rehabilitation
JF - Archives of Physical Medicine and Rehabilitation
IS - 8
ER -