Intraobserver reliability and construct validity of the squat test in children with cerebral palsy

Maaike M. Eken; Annet J. Dallmeijer; Annemieke I. Buizer; Saskia Hogervorst; Kim Van Hutten; Marjolein Piening; Marjolein Van Der Krogt; Han Houdijk

doi:https://doi.org/10.1097/PEP.0000000000000736

Intraobserver reliability and construct validity of the squat test in children with cerebral palsy

Maaike M. Eken, Annet J. Dallmeijer, Annemieke I. Buizer, Saskia Hogervorst, Kim Van Hutten, Marjolein Piening, Marjolein Van Der Krogt, Han Houdijk

Research output: Contribution to journal › Article › Academic › peer-review

3 Citations (Scopus)

Abstract

Purpose: This study evaluated intraobserver reliability and construct validity of the squat test to assess lower extremity strength in children with cerebral palsy (CP) and spastic diplegia. Methods: Children with CP performed 2 trials of the squat test and calculated the intraclass correlation coefficient to evaluate intraobserver reliability. Correlations between outcomes of hand-held dynamometry (HHD) of knee extensor strength and an 8-repetition maximum (8RM) leg press test and the squat test were calculated to evaluate construct validity. Results: Excellent intraobserver reliability was observed for the squat test. Correlations between squat test performance and HHD knee extension and 8RM leg press test demonstrated good construct validity. Conclusions: The squat test is a reliable and valid tool to assess lower extremity strength in children with CP and spastic diplegia. The squat test is inexpensive and less time-consuming, and therefore particularly suitable for clinicians.

Original language	English
Pages (from-to)	399-403
Number of pages	5
Journal	Pediatric physical therapy
Volume	32
Issue number	4
DOIs	https://doi.org/10.1097/PEP.0000000000000736
Publication status	Published - 1 Oct 2020

Keywords

Cerebral palsy
Lower extremity
Muscle strength
Reliability
Validity

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https://doi.org/10.1097/PEP.0000000000000736

https://europepmc.org/article/med/32991569

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title = "Intraobserver reliability and construct validity of the squat test in children with cerebral palsy",

abstract = "Purpose: This study evaluated intraobserver reliability and construct validity of the squat test to assess lower extremity strength in children with cerebral palsy (CP) and spastic diplegia. Methods: Children with CP performed 2 trials of the squat test and calculated the intraclass correlation coefficient to evaluate intraobserver reliability. Correlations between outcomes of hand-held dynamometry (HHD) of knee extensor strength and an 8-repetition maximum (8RM) leg press test and the squat test were calculated to evaluate construct validity. Results: Excellent intraobserver reliability was observed for the squat test. Correlations between squat test performance and HHD knee extension and 8RM leg press test demonstrated good construct validity. Conclusions: The squat test is a reliable and valid tool to assess lower extremity strength in children with CP and spastic diplegia. The squat test is inexpensive and less time-consuming, and therefore particularly suitable for clinicians.",

keywords = "Cerebral palsy, Lower extremity, Muscle strength, Reliability, Validity",

author = "Eken, {Maaike M.} and Dallmeijer, {Annet J.} and Buizer, {Annemieke I.} and Saskia Hogervorst and {Van Hutten}, Kim and Marjolein Piening and {Van Der Krogt}, Marjolein and Han Houdijk",

note = "Funding Information: Correspondence: Maaike M. Eken, PhD, Department of Rehabilitation Medicine, Amsterdam University Medical Centers, PO Box 7057, 1007 MB, Amsterdam, the Netherlands (m.eken@amsterdamumc.nl). Grant Support: This study was supported by a grant from the Revalidatie-fonds (R2015-045). The funding source had no other role than financial support. The authors declare no conflicts of interest. Publisher Copyright: {\textcopyright} 2020 Lippincott Williams and Wilkins. All rights reserved. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

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doi = "https://doi.org/10.1097/PEP.0000000000000736",

language = "English",

volume = "32",

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AU - Eken, Maaike M.

AU - Dallmeijer, Annet J.

AU - Buizer, Annemieke I.

AU - Hogervorst, Saskia

AU - Van Hutten, Kim

AU - Piening, Marjolein

AU - Van Der Krogt, Marjolein

AU - Houdijk, Han

N1 - Funding Information: Correspondence: Maaike M. Eken, PhD, Department of Rehabilitation Medicine, Amsterdam University Medical Centers, PO Box 7057, 1007 MB, Amsterdam, the Netherlands (m.eken@amsterdamumc.nl). Grant Support: This study was supported by a grant from the Revalidatie-fonds (R2015-045). The funding source had no other role than financial support. The authors declare no conflicts of interest. Publisher Copyright: © 2020 Lippincott Williams and Wilkins. All rights reserved. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/10/1

Y1 - 2020/10/1

N2 - Purpose: This study evaluated intraobserver reliability and construct validity of the squat test to assess lower extremity strength in children with cerebral palsy (CP) and spastic diplegia. Methods: Children with CP performed 2 trials of the squat test and calculated the intraclass correlation coefficient to evaluate intraobserver reliability. Correlations between outcomes of hand-held dynamometry (HHD) of knee extensor strength and an 8-repetition maximum (8RM) leg press test and the squat test were calculated to evaluate construct validity. Results: Excellent intraobserver reliability was observed for the squat test. Correlations between squat test performance and HHD knee extension and 8RM leg press test demonstrated good construct validity. Conclusions: The squat test is a reliable and valid tool to assess lower extremity strength in children with CP and spastic diplegia. The squat test is inexpensive and less time-consuming, and therefore particularly suitable for clinicians.

AB - Purpose: This study evaluated intraobserver reliability and construct validity of the squat test to assess lower extremity strength in children with cerebral palsy (CP) and spastic diplegia. Methods: Children with CP performed 2 trials of the squat test and calculated the intraclass correlation coefficient to evaluate intraobserver reliability. Correlations between outcomes of hand-held dynamometry (HHD) of knee extensor strength and an 8-repetition maximum (8RM) leg press test and the squat test were calculated to evaluate construct validity. Results: Excellent intraobserver reliability was observed for the squat test. Correlations between squat test performance and HHD knee extension and 8RM leg press test demonstrated good construct validity. Conclusions: The squat test is a reliable and valid tool to assess lower extremity strength in children with CP and spastic diplegia. The squat test is inexpensive and less time-consuming, and therefore particularly suitable for clinicians.

KW - Cerebral palsy

KW - Lower extremity

KW - Muscle strength

KW - Reliability

KW - Validity

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Intraobserver reliability and construct validity of the squat test in children with cerebral palsy

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Keywords

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