Reliability and validity of the function in sitting test among non-ambulatory individuals with spinal cord injury

Libak Abou, Jong Hun Sung, Jacob J Sosnoff, Laura A Rice

Research output: Contribution to journalArticle

Abstract

Context: Trunk impairment among non-ambulatory individuals with spinal cord injury (SCI) reduces the ability to maintain a functional sitting position and perform activities of daily living. Measuring functional sitting balance is complex and difficult in a clinical setting. The function in sitting test (FIST) is a clinical measure that includes the assessment of all the components of sitting balance. The purpose of this study is to assess the reliability and validity of the 14-item FIST among non-ambulatory individuals with SCI. Participants: Twenty-six individuals with chronic SCI. Outcome measures: Participants were evaluated with the FIST, the modified Functional Reach Test (lateral and forward mFRT) and a posturography assessment (virtual time to contact–VTC). The FIST was re-assessed during a second study visit 12 weeks later. Test-retest reliability was evaluated using intraclass coefficient correlation (ICC), the minimal detectable change (MDC) was calculated and the internal consistency reliability was assessed using Cronbach's coefficient-α. Concurrent validity of the FIST was also tested with the mFRT and the VTC. Results: Test-retest reliability was found to be excellent (ICC = 0.95) with a MDC of 4. The internal consistency was satisfactory (0.81). Moreover, the FIST correlates with the lateral mFRT (r = 0.64, P = 0.001) but not with the forward mFRT and the VTC. Conclusion: These observations provide evidence that the FIST is a reliable clinical measure with partially established validity for non-ambulatory individuals with SCI. Further studies are needed to strengthen the validity of the FIST and explore this measure in a larger sample.

Original languageEnglish (US)
JournalJournal of Spinal Cord Medicine
DOIs
StatePublished - Jan 1 2019

Fingerprint

Spinal Cord Injuries
Reproducibility of Results
Activities of Daily Living
Posture
Outcome Assessment (Health Care)

Keywords

  • Reliability
  • Sitting balance
  • Spinal cord injury
  • Validity

ASJC Scopus subject areas

  • Clinical Neurology

Cite this

@article{39fb3a99e011430b93dd9faad4ceb658,
title = "Reliability and validity of the function in sitting test among non-ambulatory individuals with spinal cord injury",
abstract = "Context: Trunk impairment among non-ambulatory individuals with spinal cord injury (SCI) reduces the ability to maintain a functional sitting position and perform activities of daily living. Measuring functional sitting balance is complex and difficult in a clinical setting. The function in sitting test (FIST) is a clinical measure that includes the assessment of all the components of sitting balance. The purpose of this study is to assess the reliability and validity of the 14-item FIST among non-ambulatory individuals with SCI. Participants: Twenty-six individuals with chronic SCI. Outcome measures: Participants were evaluated with the FIST, the modified Functional Reach Test (lateral and forward mFRT) and a posturography assessment (virtual time to contact–VTC). The FIST was re-assessed during a second study visit 12 weeks later. Test-retest reliability was evaluated using intraclass coefficient correlation (ICC), the minimal detectable change (MDC) was calculated and the internal consistency reliability was assessed using Cronbach's coefficient-α. Concurrent validity of the FIST was also tested with the mFRT and the VTC. Results: Test-retest reliability was found to be excellent (ICC = 0.95) with a MDC of 4. The internal consistency was satisfactory (0.81). Moreover, the FIST correlates with the lateral mFRT (r = 0.64, P = 0.001) but not with the forward mFRT and the VTC. Conclusion: These observations provide evidence that the FIST is a reliable clinical measure with partially established validity for non-ambulatory individuals with SCI. Further studies are needed to strengthen the validity of the FIST and explore this measure in a larger sample.",
keywords = "Reliability, Sitting balance, Spinal cord injury, Validity",
author = "Libak Abou and Sung, {Jong Hun} and Sosnoff, {Jacob J} and Rice, {Laura A}",
year = "2019",
month = "1",
day = "1",
doi = "10.1080/10790268.2019.1605749",
language = "English (US)",
journal = "Journal of Spinal Cord Medicine",
issn = "1079-0268",
publisher = "Maney Publishing",

}

TY - JOUR

T1 - Reliability and validity of the function in sitting test among non-ambulatory individuals with spinal cord injury

AU - Abou, Libak

AU - Sung, Jong Hun

AU - Sosnoff, Jacob J

AU - Rice, Laura A

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Context: Trunk impairment among non-ambulatory individuals with spinal cord injury (SCI) reduces the ability to maintain a functional sitting position and perform activities of daily living. Measuring functional sitting balance is complex and difficult in a clinical setting. The function in sitting test (FIST) is a clinical measure that includes the assessment of all the components of sitting balance. The purpose of this study is to assess the reliability and validity of the 14-item FIST among non-ambulatory individuals with SCI. Participants: Twenty-six individuals with chronic SCI. Outcome measures: Participants were evaluated with the FIST, the modified Functional Reach Test (lateral and forward mFRT) and a posturography assessment (virtual time to contact–VTC). The FIST was re-assessed during a second study visit 12 weeks later. Test-retest reliability was evaluated using intraclass coefficient correlation (ICC), the minimal detectable change (MDC) was calculated and the internal consistency reliability was assessed using Cronbach's coefficient-α. Concurrent validity of the FIST was also tested with the mFRT and the VTC. Results: Test-retest reliability was found to be excellent (ICC = 0.95) with a MDC of 4. The internal consistency was satisfactory (0.81). Moreover, the FIST correlates with the lateral mFRT (r = 0.64, P = 0.001) but not with the forward mFRT and the VTC. Conclusion: These observations provide evidence that the FIST is a reliable clinical measure with partially established validity for non-ambulatory individuals with SCI. Further studies are needed to strengthen the validity of the FIST and explore this measure in a larger sample.

AB - Context: Trunk impairment among non-ambulatory individuals with spinal cord injury (SCI) reduces the ability to maintain a functional sitting position and perform activities of daily living. Measuring functional sitting balance is complex and difficult in a clinical setting. The function in sitting test (FIST) is a clinical measure that includes the assessment of all the components of sitting balance. The purpose of this study is to assess the reliability and validity of the 14-item FIST among non-ambulatory individuals with SCI. Participants: Twenty-six individuals with chronic SCI. Outcome measures: Participants were evaluated with the FIST, the modified Functional Reach Test (lateral and forward mFRT) and a posturography assessment (virtual time to contact–VTC). The FIST was re-assessed during a second study visit 12 weeks later. Test-retest reliability was evaluated using intraclass coefficient correlation (ICC), the minimal detectable change (MDC) was calculated and the internal consistency reliability was assessed using Cronbach's coefficient-α. Concurrent validity of the FIST was also tested with the mFRT and the VTC. Results: Test-retest reliability was found to be excellent (ICC = 0.95) with a MDC of 4. The internal consistency was satisfactory (0.81). Moreover, the FIST correlates with the lateral mFRT (r = 0.64, P = 0.001) but not with the forward mFRT and the VTC. Conclusion: These observations provide evidence that the FIST is a reliable clinical measure with partially established validity for non-ambulatory individuals with SCI. Further studies are needed to strengthen the validity of the FIST and explore this measure in a larger sample.

KW - Reliability

KW - Sitting balance

KW - Spinal cord injury

KW - Validity

UR - http://www.scopus.com/inward/record.url?scp=85064699898&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85064699898&partnerID=8YFLogxK

U2 - 10.1080/10790268.2019.1605749

DO - 10.1080/10790268.2019.1605749

M3 - Article

AN - SCOPUS:85064699898

JO - Journal of Spinal Cord Medicine

JF - Journal of Spinal Cord Medicine

SN - 1079-0268

ER -