A Comparison of Resting Scapular Posture and the Davies Closed Kinetic Chain Upper Extremity Stability Test

# BACKGROUND In orthopaedic practice, it is well established that weak scapular stabilizers and an unstable scapula is related to shoulder dysfunction. Faulty scapular position has been linked to decreased scapular stability and is thought to be a result of weak or unbalanced timing in the recruitm...

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Autores principales:	John D Heick, Jenna Haggerty, Robert C Manske
Formato:	article
Lenguaje:	EN
Publicado:	North American Sports Medicine Institute 2021
Materias:	Sports medicine RC1200-1245
Acceso en línea:	https://doaj.org/article/b28477bf937d495bb16dc9350d4191ad
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spelling	oai:doaj.org-article:b28477bf937d495bb16dc9350d4191ad2021-12-02T17:11:30ZA Comparison of Resting Scapular Posture and the Davies Closed Kinetic Chain Upper Extremity Stability Test10.26603/001c.234252159-2896https://doaj.org/article/b28477bf937d495bb16dc9350d4191ad2021-06-01T00:00:00Zhttps://ijspt.scholasticahq.com/article/23425-a-comparison-of-resting-scapular-posture-and-the-davies-closed-kinetic-chain-upper-extremity-stability-test.pdfhttps://doaj.org/toc/2159-2896# BACKGROUND In orthopaedic practice, it is well established that weak scapular stabilizers and an unstable scapula is related to shoulder dysfunction. Faulty scapular position has been linked to decreased scapular stability and is thought to be a result of weak or unbalanced timing in the recruitment of scapulothoracic dynamic stabilizing muscles. Kibler has described a four-type classification of scapulothoracic dysfunction. Functional performance testing is used to objectively measure activities that simulate various desired activities. The reliability of assessing the four static scapular positions may be important in diagnosing shoulder dysfunction. An understanding of the scapular position and its relationship to functional performance testing is needed. # PURPOSE The purpose of this study was to determine if a static scapular test, the Kibler scapula classification, in healthy participants affects the ability to perform a closed chain functional test that involves the use of the scapula and the upper extremity, the Davies Closed Kinetic Chain Upper Extremity Stability Test (CKCUEST). A secondary analysis was performed to evaluate the reliability of a student physical therapist and an experienced physical therapist to identify scapular type by observation. # STUDY DESIGN Multicenter, single session descriptive cohort # METHODS Sixty-one healthy participants (33 males, 28 females; mean age 24.19±2.61) completed testing across two locations in one testing session. Blood pressure and heart rate as well as height and weight were measured for each participant. Participants were classified by visual observation of Kibler scapular classification. The average number of CKUEST touches, a normalized score, and a power score were calculated for each participant. Three trials were performed and participants were required to take a 45-second rest break between each CKCUEST trial. # RESULTS One way analysis of variance (ANOVA) showed statistically significant differences in Type I and Type IV Kibler scapula classification for the CKCUEST power score, however when an ANCOVA controlled for body mass index, there was no statistically significant difference. A strong correlation r=.94 was observed between student and experienced physical therapist in evaluating all four types of Kibler scapular classification. # CONCLUSIONS Visually observed Kibler scapular position does not affect the ability to perform the Davies CKCUEST in healthy young adults. The ability to identify Kibler scapular position was reliable between student and experienced physical therapists. Additional studies are required to identify the usefulness of the Kibler scapular position classification. # LEVEL OF EVIDENCE 2b: Individual Cohort StudyJohn D HeickJenna HaggertyRobert C ManskeNorth American Sports Medicine InstitutearticleSports medicineRC1200-1245ENInternational Journal of Sports Physical Therapy, Vol 16, Iss 3 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Sports medicine RC1200-1245
spellingShingle	Sports medicine RC1200-1245 John D Heick Jenna Haggerty Robert C Manske A Comparison of Resting Scapular Posture and the Davies Closed Kinetic Chain Upper Extremity Stability Test
description	# BACKGROUND In orthopaedic practice, it is well established that weak scapular stabilizers and an unstable scapula is related to shoulder dysfunction. Faulty scapular position has been linked to decreased scapular stability and is thought to be a result of weak or unbalanced timing in the recruitment of scapulothoracic dynamic stabilizing muscles. Kibler has described a four-type classification of scapulothoracic dysfunction. Functional performance testing is used to objectively measure activities that simulate various desired activities. The reliability of assessing the four static scapular positions may be important in diagnosing shoulder dysfunction. An understanding of the scapular position and its relationship to functional performance testing is needed. # PURPOSE The purpose of this study was to determine if a static scapular test, the Kibler scapula classification, in healthy participants affects the ability to perform a closed chain functional test that involves the use of the scapula and the upper extremity, the Davies Closed Kinetic Chain Upper Extremity Stability Test (CKCUEST). A secondary analysis was performed to evaluate the reliability of a student physical therapist and an experienced physical therapist to identify scapular type by observation. # STUDY DESIGN Multicenter, single session descriptive cohort # METHODS Sixty-one healthy participants (33 males, 28 females; mean age 24.19±2.61) completed testing across two locations in one testing session. Blood pressure and heart rate as well as height and weight were measured for each participant. Participants were classified by visual observation of Kibler scapular classification. The average number of CKUEST touches, a normalized score, and a power score were calculated for each participant. Three trials were performed and participants were required to take a 45-second rest break between each CKCUEST trial. # RESULTS One way analysis of variance (ANOVA) showed statistically significant differences in Type I and Type IV Kibler scapula classification for the CKCUEST power score, however when an ANCOVA controlled for body mass index, there was no statistically significant difference. A strong correlation r=.94 was observed between student and experienced physical therapist in evaluating all four types of Kibler scapular classification. # CONCLUSIONS Visually observed Kibler scapular position does not affect the ability to perform the Davies CKCUEST in healthy young adults. The ability to identify Kibler scapular position was reliable between student and experienced physical therapists. Additional studies are required to identify the usefulness of the Kibler scapular position classification. # LEVEL OF EVIDENCE 2b: Individual Cohort Study
format	article
author	John D Heick Jenna Haggerty Robert C Manske
author_facet	John D Heick Jenna Haggerty Robert C Manske
author_sort	John D Heick
title	A Comparison of Resting Scapular Posture and the Davies Closed Kinetic Chain Upper Extremity Stability Test
title_short	A Comparison of Resting Scapular Posture and the Davies Closed Kinetic Chain Upper Extremity Stability Test
title_full	A Comparison of Resting Scapular Posture and the Davies Closed Kinetic Chain Upper Extremity Stability Test
title_fullStr	A Comparison of Resting Scapular Posture and the Davies Closed Kinetic Chain Upper Extremity Stability Test
title_full_unstemmed	A Comparison of Resting Scapular Posture and the Davies Closed Kinetic Chain Upper Extremity Stability Test
title_sort	comparison of resting scapular posture and the davies closed kinetic chain upper extremity stability test
publisher	North American Sports Medicine Institute
publishDate	2021
url	https://doaj.org/article/b28477bf937d495bb16dc9350d4191ad
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A Comparison of Resting Scapular Posture and the Davies Closed Kinetic Chain Upper Extremity Stability Test

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