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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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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North American Sports Medicine Institute
2021-06-01
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| Series: | International Journal of Sports Physical Therapy |
| Online Access: | https://doi.org/10.26603/001c.22146 |
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| _version_ | 1825197022172413952 |
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| 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 |
| collection | DOAJ |
| 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 |
| id | doaj-art-8527995a21f7437ca2043355ef29dce6 |
| institution | Kabale University |
| issn | 2159-2896 |
| language | English |
| publishDate | 2021-06-01 |
| publisher | North American Sports Medicine Institute |
| record_format | Article |
| series | International Journal of Sports Physical Therapy |
| spelling | doaj-art-8527995a21f7437ca2043355ef29dce62025-02-11T20:28:13ZengNorth American Sports Medicine InstituteInternational Journal of Sports Physical Therapy2159-28962021-06-01163Biomechanical Changes During a 90º Cut in Collegiate Female Soccer Players With Participation in the 11+Celeste DixAmelia ArundaleHolly Silvers-GranelliAdam MarmonRyan ZarzyckiLynn Snyder-Mackler# 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 2bhttps://doi.org/10.26603/001c.22146 |
| spellingShingle | 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+ International Journal of Sports Physical Therapy |
| title | 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_short | 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 |
| url | https://doi.org/10.26603/001c.22146 |
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