Biomechanical Changes During a 90º Cut in Collegiate Female Soccer Players With Participation in the 11+

# Background Valgus collapse and high knee abduction moments have been identified as biomechanical risk factors for ACL injury. It is unknown if participation in the 11+, a previously established, dynamic warm-up that emphasizes biomechanical technique and reduces ACL injury rates, reduces componen...

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Autores principales:	Celeste Dix, Amelia Arundale, Holly Silvers-Granelli, Adam Marmon, Ryan Zarzycki, Lynn Snyder-Mackler
Formato:	article
Lenguaje:	EN
Publicado:	North American Sports Medicine Institute 2021
Materias:	Sports medicine RC1200-1245
Acceso en línea:	https://doaj.org/article/8527995a21f7437ca2043355ef29dce6
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spelling	oai:doaj.org-article:8527995a21f7437ca2043355ef29dce62021-12-02T16:01:46ZBiomechanical Changes During a 90º Cut in Collegiate Female Soccer Players With Participation in the 11+10.26603/001c.221462159-2896https://doaj.org/article/8527995a21f7437ca2043355ef29dce62021-06-01T00:00:00Zhttps://ijspt.scholasticahq.com/article/22146-biomechanical-changes-during-a-90-cut-in-collegiate-female-soccer-players-with-participation-in-the-11.pdfhttps://doaj.org/toc/2159-2896# Background Valgus collapse and high knee abduction moments have been identified as biomechanical risk factors for ACL injury. It is unknown if participation in the 11+, a previously established, dynamic warm-up that emphasizes biomechanical technique and reduces ACL injury rates, reduces components of valgus collapse during a 90º cut. # Hypothesis/Purpose To determine whether participation in the 11+ during a single soccer season reduced peak knee abduction moment and components of valgus collapse during a 90º cut in collegiate female soccer players. # Study Design Prospective cohort study # Methods Forty-six participants completed preseason and postseason motion analysis of a 90º cut. During the season, 31 players completed the 11+ and 15 players completed their typical warm-up (control group). Peak knee abduction moment, components of valgus collapse (hip adduction, internal rotation, and knee abduction angles), and a novel measure of knee valgus collapse were analyzed with repeated-measures ANOVAs to determine differences between preseason and postseason. Smallest detectable change (SDC) and minimal important difference (MID) values were applied to contextualize results. # Results There was a significant main effect of time for non-dominant knee valgus collapse (p=0.03), but decreases in non-dominant knee valgus collapse only exceeded the SDC in the intervention team. # Conclusions Clinically meaningful decreases in knee valgus collapse may indicate a beneficial biomechanical effect of the 11+. Participation in the 11+ may lower ACL injury risk by reducing valgus collapse during a 90º cut. # Level of Evidence 2bCeleste DixAmelia ArundaleHolly Silvers-GranelliAdam MarmonRyan ZarzyckiLynn Snyder-MacklerNorth 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 Celeste Dix Amelia Arundale Holly Silvers-Granelli Adam Marmon Ryan Zarzycki Lynn Snyder-Mackler Biomechanical Changes During a 90º Cut in Collegiate Female Soccer Players With Participation in the 11+
description	# Background Valgus collapse and high knee abduction moments have been identified as biomechanical risk factors for ACL injury. It is unknown if participation in the 11+, a previously established, dynamic warm-up that emphasizes biomechanical technique and reduces ACL injury rates, reduces components of valgus collapse during a 90º cut. # Hypothesis/Purpose To determine whether participation in the 11+ during a single soccer season reduced peak knee abduction moment and components of valgus collapse during a 90º cut in collegiate female soccer players. # Study Design Prospective cohort study # Methods Forty-six participants completed preseason and postseason motion analysis of a 90º cut. During the season, 31 players completed the 11+ and 15 players completed their typical warm-up (control group). Peak knee abduction moment, components of valgus collapse (hip adduction, internal rotation, and knee abduction angles), and a novel measure of knee valgus collapse were analyzed with repeated-measures ANOVAs to determine differences between preseason and postseason. Smallest detectable change (SDC) and minimal important difference (MID) values were applied to contextualize results. # Results There was a significant main effect of time for non-dominant knee valgus collapse (p=0.03), but decreases in non-dominant knee valgus collapse only exceeded the SDC in the intervention team. # Conclusions Clinically meaningful decreases in knee valgus collapse may indicate a beneficial biomechanical effect of the 11+. Participation in the 11+ may lower ACL injury risk by reducing valgus collapse during a 90º cut. # Level of Evidence 2b
format	article
author	Celeste Dix Amelia Arundale Holly Silvers-Granelli Adam Marmon Ryan Zarzycki Lynn Snyder-Mackler
author_facet	Celeste Dix Amelia Arundale Holly Silvers-Granelli Adam Marmon Ryan Zarzycki Lynn Snyder-Mackler
author_sort	Celeste Dix
title	Biomechanical Changes During a 90º Cut in Collegiate Female Soccer Players With Participation in the 11+
title_short	Biomechanical Changes During a 90º Cut in Collegiate Female Soccer Players With Participation in the 11+
title_full	Biomechanical Changes During a 90º Cut in Collegiate Female Soccer Players With Participation in the 11+
title_fullStr	Biomechanical Changes During a 90º Cut in Collegiate Female Soccer Players With Participation in the 11+
title_full_unstemmed	Biomechanical Changes During a 90º Cut in Collegiate Female Soccer Players With Participation in the 11+
title_sort	biomechanical changes during a 90º cut in collegiate female soccer players with participation in the 11+
publisher	North American Sports Medicine Institute
publishDate	2021
url	https://doaj.org/article/8527995a21f7437ca2043355ef29dce6
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Biomechanical Changes During a 90º Cut in Collegiate Female Soccer Players With Participation in the 11+

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