Lower Extremity Kinematics of the Y-Balance Test in Healthy and ACL Injured Adolescent Females

# Background Adolescent females are at significant risk for sustaining an ACL injury. The Y-Balance Test (YBT) is frequently used to evaluate neuromuscular control and lower extremity function. However, few studies have quantified 2D lower extremity kinematics during performance of the YBT, and the...

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Autores principales:	Alison Bulow, Alixandra Bellemare, Judy E Anderson, Jeff R S Leiter, Peter B MacDonald, Jason D Peeler
Formato:	article
Lenguaje:	EN
Publicado:	North American Sports Medicine Institute 2021
Materias:	Sports medicine RC1200-1245
Acceso en línea:	https://doaj.org/article/dfdb2be2a5204742a3bc010c781e8eb0
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spelling	oai:doaj.org-article:dfdb2be2a5204742a3bc010c781e8eb02021-12-02T17:42:27ZLower Extremity Kinematics of the Y-Balance Test in Healthy and ACL Injured Adolescent Females10.26603/001c.215292159-2896https://doaj.org/article/dfdb2be2a5204742a3bc010c781e8eb02021-04-01T00:00:00Zhttps://ijspt.scholasticahq.com/article/21529-lower-extremity-kinematics-of-the-y-balance-test-in-healthy-and-acl-injured-adolescent-females.pdfhttps://doaj.org/toc/2159-2896# Background Adolescent females are at significant risk for sustaining an ACL injury. The Y-Balance Test (YBT) is frequently used to evaluate neuromuscular control and lower extremity function. However, few studies have quantified 2D lower extremity kinematics during performance of the YBT, and there is an absence of kinematic data specific to at-risk adolescent females. # Purpose To examine lower extremity joint kinematics during execution of the YBT by healthy and ACL-injured adolescent females. # Study Design Prospective cohort. # Methods Twenty-five healthy and ten ACL-injured (mean time from injury 143 days) adolescent females were assessed using the YBT. Sagittal and frontal plane knee and ankle motion was video recorded during execution of the YBT anterior reach movement. Ankle dorsi-flexion, knee flexion, and knee valgus angles were quantified via kinematic analysis. ANOVAs with a post hoc Bonferroni correction were used to compare YBT scoring (%LL) and kinematic data between groups. Pearson product-moment correlations determined the relationship between kinematic data and YBT scoring. # Results Healthy and ACL-injured subjects demonstrated similar YBT scores and lower extremity kinematic data. Healthy subjects demonstrated a weak positive correlation between ankle dorsiflexion and YBT scoring, and a weak negative correlation between knee valgus and YBT scoring. These relationships did not exist for ACL-injured subjects. Kinematic data for both groups also demonstrated a large degree of variability, regardless of YBT score. # Conclusions Adolescent females frequently utilize a variety of lower extremity movement strategies when performing a functional movement task, and scoring on the YBT offers limited insight regarding lower extremity joint kinematics and ACL-injury risk in a physically active adolescent female population. # Level of Evidence Level 3.Alison BulowAlixandra BellemareJudy E AndersonJeff R S LeiterPeter B MacDonaldJason D PeelerNorth American Sports Medicine InstitutearticleSports medicineRC1200-1245ENInternational Journal of Sports Physical Therapy, Vol 16, Iss 2 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Sports medicine RC1200-1245
spellingShingle	Sports medicine RC1200-1245 Alison Bulow Alixandra Bellemare Judy E Anderson Jeff R S Leiter Peter B MacDonald Jason D Peeler Lower Extremity Kinematics of the Y-Balance Test in Healthy and ACL Injured Adolescent Females
description	# Background Adolescent females are at significant risk for sustaining an ACL injury. The Y-Balance Test (YBT) is frequently used to evaluate neuromuscular control and lower extremity function. However, few studies have quantified 2D lower extremity kinematics during performance of the YBT, and there is an absence of kinematic data specific to at-risk adolescent females. # Purpose To examine lower extremity joint kinematics during execution of the YBT by healthy and ACL-injured adolescent females. # Study Design Prospective cohort. # Methods Twenty-five healthy and ten ACL-injured (mean time from injury 143 days) adolescent females were assessed using the YBT. Sagittal and frontal plane knee and ankle motion was video recorded during execution of the YBT anterior reach movement. Ankle dorsi-flexion, knee flexion, and knee valgus angles were quantified via kinematic analysis. ANOVAs with a post hoc Bonferroni correction were used to compare YBT scoring (%LL) and kinematic data between groups. Pearson product-moment correlations determined the relationship between kinematic data and YBT scoring. # Results Healthy and ACL-injured subjects demonstrated similar YBT scores and lower extremity kinematic data. Healthy subjects demonstrated a weak positive correlation between ankle dorsiflexion and YBT scoring, and a weak negative correlation between knee valgus and YBT scoring. These relationships did not exist for ACL-injured subjects. Kinematic data for both groups also demonstrated a large degree of variability, regardless of YBT score. # Conclusions Adolescent females frequently utilize a variety of lower extremity movement strategies when performing a functional movement task, and scoring on the YBT offers limited insight regarding lower extremity joint kinematics and ACL-injury risk in a physically active adolescent female population. # Level of Evidence Level 3.
format	article
author	Alison Bulow Alixandra Bellemare Judy E Anderson Jeff R S Leiter Peter B MacDonald Jason D Peeler
author_facet	Alison Bulow Alixandra Bellemare Judy E Anderson Jeff R S Leiter Peter B MacDonald Jason D Peeler
author_sort	Alison Bulow
title	Lower Extremity Kinematics of the Y-Balance Test in Healthy and ACL Injured Adolescent Females
title_short	Lower Extremity Kinematics of the Y-Balance Test in Healthy and ACL Injured Adolescent Females
title_full	Lower Extremity Kinematics of the Y-Balance Test in Healthy and ACL Injured Adolescent Females
title_fullStr	Lower Extremity Kinematics of the Y-Balance Test in Healthy and ACL Injured Adolescent Females
title_full_unstemmed	Lower Extremity Kinematics of the Y-Balance Test in Healthy and ACL Injured Adolescent Females
title_sort	lower extremity kinematics of the y-balance test in healthy and acl injured adolescent females
publisher	North American Sports Medicine Institute
publishDate	2021
url	https://doaj.org/article/dfdb2be2a5204742a3bc010c781e8eb0
work_keys_str_mv	AT alisonbulow lowerextremitykinematicsoftheybalancetestinhealthyandaclinjuredadolescentfemales AT alixandrabellemare lowerextremitykinematicsoftheybalancetestinhealthyandaclinjuredadolescentfemales AT judyeanderson lowerextremitykinematicsoftheybalancetestinhealthyandaclinjuredadolescentfemales AT jeffrsleiter lowerextremitykinematicsoftheybalancetestinhealthyandaclinjuredadolescentfemales AT peterbmacdonald lowerextremitykinematicsoftheybalancetestinhealthyandaclinjuredadolescentfemales AT jasondpeeler lowerextremitykinematicsoftheybalancetestinhealthyandaclinjuredadolescentfemales
_version_	1718379675168800768

Lower Extremity Kinematics of the Y-Balance Test in Healthy and ACL Injured Adolescent Females

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