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Instrument validity and reliability of a choice response time test for subjects with incomplete spinal cord injury: relationship with function


Labruyère, Rob; van Hedel, H J (2011). Instrument validity and reliability of a choice response time test for subjects with incomplete spinal cord injury: relationship with function. Archives of Physical Medicine and Rehabilitation, 92(9):1443-1449.

Abstract

OBJECTIVES:

To investigate instrument validity and reliability of a choice response time (CRT) test for the lower extremities in subjects with incomplete spinal cord injury (iSCI). CRT in subjects with iSCI is hypothesized to be increased because of, for example, muscle weakness or increased corticospinal conduction velocity.
DESIGN:

Case-control study.
SETTING:

Spinal cord injury center of a university hospital in Switzerland.
PARTICIPANTS:

Patients with iSCI (N=28; mean age, 51y; 57% men; neurologic level, C3-L5; median time since injury, 148d) compared with age-matched controls (50% men) to assess instrument validity by comparing CRTs. A subgroup of subjects with iSCI (n = 9) and controls (n = 13) to determine reliability.
INTERVENTION:

Not applicable.
MAIN OUTCOME MEASURES:

CRTs of the lower extremity were assessed and divided into reaction and movement times. Additionally, subjects with iSCI were tested for lower-extremity muscle strength, gait capacity and mobility, independence, history of falls, and fear of falling.
RESULTS:

CRTs in the control group (mean ± SD, 517 ± 71 ms) were significantly faster than those in the iSCI group (743 ± 177 ms; P<.001). Retest reliability was high in controls (intraclass correlation coefficient [ICC]>.98) and subjects with iSCI (ICC>.93). In subjects with iSCI, there were moderate to good correlations between CRT and several functional outcome measures, but not with reported number of falls.
CONCLUSION:

Lower-extremity CRT testing appears reliable in healthy controls and ambulating subjects with iSCI.

Copyright © 2011 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.

Abstract

OBJECTIVES:

To investigate instrument validity and reliability of a choice response time (CRT) test for the lower extremities in subjects with incomplete spinal cord injury (iSCI). CRT in subjects with iSCI is hypothesized to be increased because of, for example, muscle weakness or increased corticospinal conduction velocity.
DESIGN:

Case-control study.
SETTING:

Spinal cord injury center of a university hospital in Switzerland.
PARTICIPANTS:

Patients with iSCI (N=28; mean age, 51y; 57% men; neurologic level, C3-L5; median time since injury, 148d) compared with age-matched controls (50% men) to assess instrument validity by comparing CRTs. A subgroup of subjects with iSCI (n = 9) and controls (n = 13) to determine reliability.
INTERVENTION:

Not applicable.
MAIN OUTCOME MEASURES:

CRTs of the lower extremity were assessed and divided into reaction and movement times. Additionally, subjects with iSCI were tested for lower-extremity muscle strength, gait capacity and mobility, independence, history of falls, and fear of falling.
RESULTS:

CRTs in the control group (mean ± SD, 517 ± 71 ms) were significantly faster than those in the iSCI group (743 ± 177 ms; P<.001). Retest reliability was high in controls (intraclass correlation coefficient [ICC]>.98) and subjects with iSCI (ICC>.93). In subjects with iSCI, there were moderate to good correlations between CRT and several functional outcome measures, but not with reported number of falls.
CONCLUSION:

Lower-extremity CRT testing appears reliable in healthy controls and ambulating subjects with iSCI.

Copyright © 2011 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Children's Hospital Zurich > Medical Clinic
04 Faculty of Medicine > Balgrist University Hospital, Swiss Spinal Cord Injury Center
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:2011
Deposited On:28 Jan 2012 10:48
Last Modified:05 Apr 2016 15:23
Publisher:Elsevier
ISSN:0003-9993
Publisher DOI:https://doi.org/10.1016/j.apmr.2011.04.006
PubMed ID:21878215

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