Article

OBJECTIVES: To determine content validity of the Muscle Power Sprint Test (MPST),
and construct validity and reliability of the MPST, 10x5 Meter Sprint Test
(10x5MST), slalom test, and One Stroke Push Test (1SPT) in wheelchair-using youth
with spina bifida (SB). DESIGN: Clinimetric study. SETTING: Rehabilitation
centers, SB outpatient services, and private practices. PARTICIPANTS: A
convenience sample of children and adolescents (N=53; 32 boys, 21 girls; age
range, 5-19y) with SB who use a manual wheelchair. Participants were recruited
through rehabilitation centers, SB outpatient services, pediatric physical
therapists, and the BOSK (Association of Physically Disabled Persons and their
Parents). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Construct
validity of the MPST was determined by comparing results with the arm-cranking
Wingate Anaerobic Test (WAnT) using paired t tests and Pearson correlation
coefficients, while content validity was assessed using time-based criteria for
anaerobic testing. Construct validity of the 10x5MST, slalom test, and 1SPT was
analyzed by hypothesis testing using Pearson correlation coefficients and
multiple regression. For reliability, intraclass correlation coefficients (ICCs)
and smallest detectable changes (SDCs) were calculated. RESULTS: For the MPST,
the mean +/- SD exercise time of 4 sprints was 28.1+/-6.6 seconds. Correlations
between the MPST and arm-cranking WAnT were high (r>.72, P<.01). Excellent
correlations were found between the 10x5MST and slalom test (r=.93, P<.01), while
correlations between the 10x5MST or slalom test and MPST and 1SPT were moderate
(r=-.56 to -.70; r=.56, P<.01). The variation of the 1SPT was explained for 38%
by wheelchair mass (beta=-.489) and total upper muscle strength (beta=.420). All
ICCs were excellent (ICCs>.95), but the SDCs varied widely. CONCLUSIONS: The MPST
is a valid and reliable test in wheelchair-using youth with SB for measuring
anaerobic performance. The 10x5MST and slalom test are valid and reliable for
measuring agility. For the 1SPT, both validity and reliability are questionable.
CI - Copyright (c) 2016 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS